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SiNtx Technologies, Inc.

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FY2018 Annual Report · SiNtx Technologies, Inc.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 10-K

[X] Annual report pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934

For the fiscal year ended December 31, 2018

or

[  ] Transition report pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from _______ to _________

Commission File No. 001-33624

SINTX Technologies, Inc.
(previously known as “Amedica Corporation”)
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

84-1375299
(IRS Employer
Identification No.)

1885 West 2100 South, Salt Lake City, UT 84119
(Address of principal executive offices and Zip Code)

(801) 839-3500
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Stock, $0.01 par value

Name of each exchange on which registered
The NASDAQ Capital Market

Securities registered under Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes [  ] No [X]

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes [  ] No [X]

Indicate  by  check  mark  whether  the  registrant  (1)  has  filed  all  reports  required  to  be  filed  by  Section  13  or  15(d)  of  the  Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and
(2) has been subject to such filing requirements for the past 90 days. Yes [X] No [  ]

Indicate  by  check  mark  whether  the  registrant  has  submitted  electronically  and  posted  on  its  corporate  Web  site,  if  any,  every
interactive  Data  File  required  to  be  submitted  and  posted  pursuant  to  Rule  405  of  Regulation  S-T  (§232.405  of  this  chapter)  during  the
preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [X] No [  ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not
be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of
this Form 10-K or any amendment to this Form 10-K. [X]

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer,  a  smaller
reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting
company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Large Accelerated Filer

Non-Accelerated Filer

[  ]

[  ]

Accelerated Filer

Smaller reporting company
Emerging growth company

[  ]

[X]
[X]

If  an  emerging  growth  company,  indicate  by  check  mark  if  the  registrant  has  elected  not  to  use  the  extended  transition  period  for

complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [  ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes [  ] No [X]

The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at
which  the  common  equity  was  last  sold,  or  the  average  bid  and  asked  price  of  such  common  equity,  as  of  the  last  business  day  of  the
registrant’s most recently completed second fiscal quarter was $20,592,811.

The  number  of  shares  outstanding  of  the  registrant’s  common  stock,  $0.01  par  value  per  share,  as  of  February  25,  2019  was

21,793,641.

DOCUMENTS INCORPORATED BY REFERENCE:

Portions of the Registrant’s definitive Proxy Statement for its 2019 Annual Meeting of Stockholders are incorporated by reference into Part
III of this Form 10-K.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item Number and Caption

TABLE OF CONTENTS

Business

PART I
Item 1.
Item 1A. Risk Factors
Item 1B. Unresolved Staff Comments
Item 2.
Item 3.
Item 4. Mine Safety Disclosures

Properties
Legal Proceedings

Selected Financial Data

PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Item 6.
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 8.
Item 9.
Item 9A. Controls and Procedures
Item 9B. Other Information

Financial Statements and Supplementary Data
Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

PART III  
Item 10. Directors, Executive Officers and Corporate Governance
Item 11. Executive Compensation
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Item 13. Certain Relationships and Related Transactions, and Director Independence
Item 14. Principal Accountant Fees and Services

PART IV  
Item 15. Exhibits and Financial Statement Schedules
Item 16. Form 10-K Summary
Signatures
Index to Consolidated Financial Statements

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F-1

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CAUTIONARY NOTE CONCERNING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act
of 1995, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of
1934,  as  amended  (the  “Exchange Act”). All  statements  other  than  statements  of  historical  fact  are  forward-looking  statements.  SINTX
Technologies,  Inc.  (“we”,  “us”,  “ourselves”)  has  tried  to  identify  forward-looking  statements  by  using  words  such  as  “believe,”  “may,”
“might,” “could,” “will,” “aim,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “plan” and similar words. These forward-looking
statements are based on our current assumptions, expectations and estimates of future events and trends. Forward-looking statements are
only predictions and are subject to many risks, uncertainties and other factors that may affect our businesses and operations and could cause
actual results to differ materially from those predicted. These risks and uncertainties include, but are not limited to, factors affecting our
quarterly and annual results, our ability to manage our growth, our ability to sustain our profitability, demand for our products, our ability to
compete successfully, our ability to rapidly develop and introduce new products, our ability to develop and execute on successful business
strategies,  our  ability  to  comply  with  changes  and  applicable  laws  and  regulations  that  are  applicable  to  our  businesses,  our  ability  to
safeguard our intellectual property, our success in defending legal proceedings brought against us, trends in the medical device industry,
and general economic conditions, and other risks set forth throughout this Annual Report, including under  “Item 1, Business,” “Item 1A,
Risk  Factors,” and “Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and  those
discussed  in  other  documents  we  file  with  the  Securities  and  Exchange  Commission  (the  “SEC”).  Moreover,  we  operate  in  an  evolving
environment.  New  risk  factors  and  uncertainties  emerge  from  time  to  time  and  it  is  not  possible  for  us  to  predict  all  risk  factors  and
uncertainties, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may
cause actual results to differ materially from those contained in any forward-looking statements.

Given these risks and uncertainties, readers are cautioned not to place undue reliance on any forward-looking statements. Forward-looking
statements  contained  in  this Annual  Report  speak  only  as  of  the  date  of  this Annual  Report.  We  undertake  no  obligation  to  update  any
forward-looking statements as a result of new information, events or circumstances or other factors arising or coming to our attention after
the date hereof.

WHERE YOU CAN FIND MORE INFORMATION

We are subject to the informational requirements of the Exchange Act. Accordingly, we file periodic reports and other information with the
SEC. We will make our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to
those  reports  available  through  our  Internet  site, https://ir.sintx.com/  as  soon  as  reasonably  practicable  after  electronically  filing  such
materials with the SEC. They may also be obtained free of charge by writing to SINTX Technologies, Inc., Attn: Investor Relations, 1885
West  2100  South,  Salt  Lake  City,  UT  84119.  In  addition,  copies  of  these  reports  may  be  obtained  through  the  SEC’s  website  at
www.sec.gov or by visiting the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549 or by calling the SEC at 800-
SEC-0330. Our common stock trades on The NASDAQ Capital Market under the symbol “SINT.”

Unless otherwise indicated, all information contained in this Annual Report reflects a 1-for-15 reverse split of our common stock which
was effected on January 25, 2016 and a 1-for-12 reverse split which was effected on November 10, 2017.

3

 
 
 
 
 
 
 
 
ITEM 1. BUSINESS

PART I

Overview – SINTX Technologies

We  are  a  biomaterials  company  focused  on  providing  ceramic  based  biomaterial  solutions  in  a  variety  of  medical  and  industrial
applications.  To  date,  our  primary  focus  has  been  the  research,  development  and  commercialization  of  medical  implant  products
manufactured with silicon nitride. We believe that silicon nitride has a superb combination of properties that make it ideally suited for long-
term human implantation. Other biomaterials are based on bone grafts, metal alloys, and polymers- all of which have well-known practical
limitations  and  disadvantages.  In  contrast,  silicon  nitride  has  a  legacy  of  success  in  the  most  demanding  and  extreme  industrial
environments.  As  a  human  implant  material,  silicon  nitride  offers  bone  ingrowth,  resistance  to  bacterial  and  viral  infection,  ease  of
diagnostic imaging, resistance to corrosion, and superior strength and fracture resistance, among other advantages, all of which claims are
validated  in  our  large  and  growing  inventory  of  peer-reviewed,  published  literature  reports.  We  believe  that  our  versatile  silicon  nitride
manufacturing expertise positions us favorably to introduce new and innovative devices in the medical and non-medical fields.

We also believe that we are the first and only company to commercialize silicon nitride medical implants. Prior to October 1, 2018, we
designed, manufactured and commercialized silicon nitride products for our own behalf in the spine implant market. Over 33,000 of our
spinal implants manufactured with silicon nitride have been implanted into patients, with an excellent safety record. On October 1, 2018,
we sold our spine implant business to CTL Medical and now manufacture spine implants made with silicon nitride for CTL Medical. Prior
to  selling  our  spine  implant  business  to  CTL  Medical,  we  had  received  510(k)  regulatory  clearance  in  the  United  States,  a  CE  mark  in
Europe, ANVISA  approval  in  Brazil,  and ARTG  and  Prostheses  approvals  in Australia  for  a  number  of  silicon  nitride  spine  implant
products  designed  for  spinal  fusion  surgery.  Spine  implant  products  manufactured  by  us  from  silicon  nitride  are  currently  marketed  and
sold by CTL Medical under the Valeo® brand to surgeons and hospitals in the United States and to selected markets in Europe and South
America. These implants are designed for use in cervical (neck) and thoracolumbar (lower back) spine surgery. We are collaborating with
CTL Medical to establish a commercial partner in Australia and also working with other partners to obtain regulatory approval for silicon
nitride implants in Japan.

The  sale  of  our  spine  implant  business  to  CTL  Medical  enables  us  to  now  focus  on  our  core  competencies.  These  are  research  and
development of silicon nitride and the design and manufacture of medical and nonmedical products manufactured from silicon nitride and
other  ceramic  materials  for  our  own  account  and  in  collaboration  with  other  medical  device  manufacturers.  We  are  targeting  original
equipment manufacturer (“OEM”) – including CTL Medical - and private label partnerships in order to accelerate adoption of silicon nitride
in future markets such as coating products with silicon nitride, hip and knee replacements, dental and maxillofacial implants, extremities,
trauma,  and  sports  medicine.  Existing  biomaterials,  based  on  plastics,  metals,  and  bone  grafts  have  well-recognized  limitations  that  we
believe  are  addressed  by  silicon  nitride,  and  we  are  uniquely  positioned  to  convert  existing,  successful  implant  designs  made  by  other
companies into products manufactured with silicon nitride. OEM and private label partnerships allow us to work with a variety of partners,
accelerate  the  adoption  of  silicon  nitride,  and  realize  incremental  revenue  at  improved  operating  margins,  when  compared  to  the  cost-
intensive direct sales model.

We believe that silicon nitride addresses many of the biomaterial-related limitations in fields such as hip and knee replacements, dental and
maxillofacial implants, sports medicine, extremities, and trauma surgery. We further believe that the inherent material properties of silicon
nitride, and the ability to formulate the material in a variety of compositions, combined with precise control of the surface properties of the
material, opens up a number of commercial opportunities across orthopedic surgery, neurological surgery, maxillofacial surgery, and other
medical disciplines.

We operate a 30,000 square foot manufacturing facility at our corporate headquarters in Salt Lake City, Utah, and we believe we are the
only vertically integrated silicon nitride medical device manufacturer in the world.

4

 
 
 
 
 
 
 
 
 
 
Overview - Biomaterials

Biomaterials are natural or synthetic biocompatible materials that are used in virtually every medical specialty to improve or preserve body
functionality. Various types of biomaterials are used as essential components in medical devices, drug delivery systems, replacement and
tissue repair technologies, prostheses, and diagnostic technologies.

There are four general categories of biomaterials:

● Ceramics. Ceramics  are  hard,  non-metallic,  non-corrosive,  heat-resistant  materials  made  by  shaping  and  then  applying  high
temperatures. Traditional  ceramics  commonly  used  as  biomaterials  include  carbon,  oxides  of  aluminum,  zirconium  and  titanium,
calcium  phosphate and  zirconia-toughened  alumina.  Examples  of  medical  uses  of  ceramics  include  repair,  augmentation  or
stabilization  of  fractured bones, bone and joint replacements, spinal fusion devices, dental implants and restorations, heart valves
and surgical instruments.

● Metals. Metals commonly used as biomaterials include titanium, stainless steel, cobalt, chrome, gold, silver and platinum, and alloys
of  these  metals.  Examples  of  medical  uses  of  metals  include  the  repair  or  stabilization  of  fractured  bones,  stents, surgical
instruments, bone and joint replacements, spinal fusion devices, dental implants and restorations and heart valves.

● Natural biomaterials. Natural  biomaterials  are  derived  from  human  donors,  animal  or  plant  sources  and  include  human  bone,
collagen, gelatin,  cellulose,  chitin,  alginate  and  hyaluronic  acid.  Examples  of  medical  uses  of  natural  biomaterials  include  the
addition or substitution of hard and soft tissue, cornea protectors, vascular grafts, repair and replacement of tendons and ligaments,
bone and joint replacements, spinal fusion devices, dental restorations and heart valves.

● Polymers. Polymers  are  synthetic  compounds  consisting  of  similar  molecules  linked  together  that  can  be  created  to  have  specific
properties.  Polymers  commonly  used  as  biomaterials  include  nylon,  silicon  rubber,  polyester,  polyethylene,  cross-linked
polyethylene (a  stronger  version),  polymethylmethacrylate,  polyvinyl  chloride  and  polyetheretherketone  –  which  is  commonly
referred to as PEEK. Examples of medical uses of polymers include soft-tissue replacement, sutures, drug delivery systems, joint
replacements, spinal fusion devices and dental restorations.

Our Silicon Nitride Technology Platform

We believe we are the only FDA-cleared and ISO 13485 certified silicon nitride medical device manufacturing facility in the world, and the
only  provider  of  structural  ceramics-based  medical  devices  used  for  spinal  fusion  applications.  Silicon  nitride  is  a  chemical  compound
comprised  of  the  elements  silicon  and  nitrogen,  with  the  chemical  formula  Si3N4.  Silicon  nitride,  an  advanced  ceramic,  is  lightweight,
resistant  to  fracture  and  strong,  and  is  used  in  many  demanding  mechanical,  thermal  and  wear  applications,  such  as  in  space  shuttle
bearings, jet engine components and body armor.

We  believe  our  silicon  nitride  is  ideal  as  an  implant  material  and  is  superior  to  other  biomaterials  currently  used  in  the  market  such  as
PEEK,  allograft  and  autograft  bone,  metal  and  traditional  oxide  ceramics,  none  of  which  possess  all  of  the  favorable  characteristics  of
silicon nitride:

● Promotes Bone Growth. Our silicon nitride is osteointegrative through its inherent surface topography and surface chemistry. The
surface  topography  provides  scaffolding  for  new  bone  growth. As  a  hydrophilic  material,  silicon  nitride  attracts  protein  cells and
nutrients  that  stimulate  osteoprogenitor  cells  to  differentiate  into  osteoblasts,  which  are  needed  for  optimal  bone  growth
environments.  Our  silicon  nitride  has  an  inherent  surface  chemistry  that  favors  bone  formation  and  healing,  much  more  so  than
PEEK and metals. These properties were highlighted in an in vivo study, where we measured the force required to separate devices
from the spine after being implanted for three months, which indicates the quality of osteointegration. In the absence of bacteria, the
force required to separate our silicon nitride from its surrounding bone was approximately three times that of PEEK, and nearly two
times that of titanium. In the presence of bacteria, the force required to separate our silicon nitride from its surrounding bone was
over  five  times  that  of  titanium,  while  there  was  effectively  no  separation  force  required  for PEEK,  indicating  essentially  no
osteointegration in a septic environment.

5

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● Antibacterial. We have demonstrated in in vitro and in vivo studies that silicon nitride has inherent surface antibacterial properties,
which reduce the risk of bacterial infection and biofilm in and around a silicon nitride device. PEEK, traditional ceramics, metals
and  bone  do  not  have  this  bacterial  resistance.  These  properties  were  highlighted  in a n in  vitro  study  (Acta  Biomater.  2012
Dec;8(12):4447-54.  doi:  10.1016/j.actbio.2012.07.038. Epub  2012  Jul  31.),  where  live  bacteria  counts  were  between  8  and  30
times lower on our silicon nitride than PEEK and up to 8 times lower on our silicon nitride than titanium. In addition to improving
patient outcomes, we believe the antibacterial properties of our silicon nitride should make it an attractive biomaterial to hospitals
and  surgeons who  are  not  reimbursed  by  third-party  payers  for  the  treatment  of  acute,  implant-related infections. Additionally,
silicon nitride is synthetic and, therefore, there is a lower risk of disease transmission through cross-contamination or of an adverse
auto-immune response, sometimes associated with the use of allograft bone.

● Antiviral: Solid-surface inactivation of microbial pathogens has ancient roots; the Smith Papyrus (2600~2200 B.C.) described the
use  of  copper  surfaces  to  sterilize  chest  wounds  and  drinking water.  Today,  brass  and  bronze  on  door-knobs  help  prevent
microbial  spread  in  hospitals, and  metal  particles  and  surface  coatings  of  selected  metals  are  used  in  hygiene-sensitive
environments, both as inactivators and adjuvants in inducing cellular immunity. Cellular toxicity limits these approaches because
while  the  reactive  oxygen  radicals  generated at  metal  surfaces  efficiently  kill  bacteria  and  viruses,  they  also  damage  cells  by
oxidizing their  proteins  and  lipids.  Recent  data  have  shown  that  silicon  nitride  surfaces  are  effective against  several  types  of
viruses.  With  surface-contact  transmission  of  viral  pathogens, particularly  influenza,  and  the  increasing  use  of  consumer
touchscreens in various retail industries, we believe that our material has value to OEM partners focused on consumer glass-based
surface coatings and treatments. We have filed a U.S. patent application on this effect.

● Antifungal: We  have  conducted  preliminary  studies  which  suggest  that  our  silicon  nitride  may  be  effective  against  fungal
microbes. Plant-based viruses, bacteria, and fungi affect some 15% of the world’s edible crops, or about 1 billion metric tons of
edible produce annually, with an economic impact in the US and Canada alone estimated to be between $1.5 to $5 Billion per year.
The  mycotoxins  produced  by  these  plant  fungi  have an  overall  negative  impact  on  human  health  and  longevity.  The  inorganic
nature  of  silicon nitride  may  prove  to  be  more  beneficial  than  the  use  of  petrochemical  or  organometallic fungicides  which  are
known to have residual effects  in  soil,  on  plants,  and  in  fruit. Our goal is to identify  industry  partners  who  have  interest  in  this
technology, and potentially spin-off this agribusiness segment of our business, with SINTX Technologies as an OEM supplier.

● Imaging Compatible. Our silicon nitride interbody spinal fusion devices are semi-radiolucent, clearly visible in X-rays, and produce
no  distortion  under  MRI  and  no  scattering  under  CT.  These  characteristics  enable  an  exact  view  of  the  device  for  precise  intra-
operative placement and post-operative bone fusion assessment in spinal fusion procedures. These qualities provide surgeons with
greater certainty of outcomes with our silicon nitride devices than with other biomaterials, such as PEEK and metals.

● Hard, Strong  and  Resistant  to  Fracture. Our  silicon  nitride  is  hard,  strong  and  possesses superior  resistance  to  fracture  over
traditional ceramics and greater strength than polymers currently on the market. For example, our silicon nitride’s flexural strength
is more  than  five  times  that  of  PEEK  and  our  silicon  nitride’s  compressive  strength is  over  twenty  times  that  of  PEEK.  Unlike
PEEK  interbody  spinal  fusion  devices,  we  believe our  silicon  nitride  interbody  spinal  fusion  devices  can  withstand  the  forces
exerted during implantation and daily activities over the long term.

● Resistant to Wear. We believe our silicon nitride joint implant product candidates could have higher resistance to wear than metal-
on-cross-linked polyethylene  and  traditional  oxide  ceramic-on-cross-linked  polyethylene  joint  implants,  the  two  most  commonly
used  total  hip replacement  implants.  Wear  debris  associated  with  metal  implants  increases  the  risk  of  metal  sensitivity  and
metallosis. It is a primary reason for early failures of metal and polymer articulating joint components.

● Non-Corrosive. Our  silicon  nitride  does  not  have  the  drawbacks  associated  with  the  corrosive  nature  of  metal  within  the  body,
including metal sensitivity and metallosis, nor does it result in the release of metal ions into the body. As a result, we believe our
silicon nitride products will have lower revision rates and fewer complications than comparable metal and traditional oxide ceramic
products.

6

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Supporting Data

We and a number of independent third parties have conducted extensive biocompatibility, biomechanical,  in vivo and in vitro testing on our
silicon nitride composition to establish its safety and efficacy in support of regulatory clearance of our biomaterial, products and product
candidates.  We  have  also  completed  additional  testing  of  our  silicon  nitride  products  and  product  candidates.  The  results  of  this  testing
have  been  published  in  over  75  peer  reviewed  publications  that  include  basic  science  studies,  small-  and  large-animal  data,  and  human
clinical  studies.  We  believe  that  our  product  development  strategy  is  consistent  with  the  manner  in  which  other  biomaterials  have  been
successfully  introduced  into  the  market  and  adopted  as  the  standard  of  care.  Listed  below  is  an  overview  of  some  of  the  key  testing
completed on our silicon nitride biomaterial, products and product candidates to date, as well as other information about our silicon nitride
and other biomaterials.

Biocompatibility

Before our silicon nitride was cleared by the FDA in 2008, we conducted a series of biocompatibility tests following the guidelines of the
FDA and ISO and submitted the results to the FDA as part of the regulatory clearance process. These tests confirmed that our silicon nitride
products meet required biocompatibility standards for human use.

Promotion of Bone Growth

In  2012,  we  conducted  two  separate  studies  at  Brown  University,  the  results  of  which  suggest  that  the  chemistry  and  inherent  surface
topography of our solid silicon nitride provides an optimal environment for bone growth onto and around the device.

The first study was a series of in vitro analyses of protein adsorption, or presence on the surface of the biomaterial, onto silicon nitride,
PEEK  and  titanium.  The  results  of  this  study  indicated  that  adsorption  of  two  key  proteins  necessary  for  bone  growth  (fibronectin  and
vitronectin)  were  up  to  eight  times  greater  on  our  silicon  nitride  than  on  PEEK,  and  up  to  four  times  greater  than  on  titanium. A  third
important protein (laminin) had up to two times greater adsorption on our silicon nitride than on PEEK, and up to two-and-one-half times
greater adsorption than on titanium.

The second study was an in vivo investigation of the osteointegration characteristics of these same three biomaterials after they had been
surgically  implanted  into  the  skulls  of  laboratory  rats.  This  study  included  an  examination  of  the  effect  of  Staphylococcus  epidermidis
bacteria on osteointegration. At time intervals of up to three months after implantation of the biomaterial, the amount of new bone growth
within the surgical site and in direct contact with the implanted biomaterial was evaluated. In the absence of bacteria, new bone formation
within  the  surgical  site  surrounding  our  silicon  nitride  was  approximately  69%,  compared  with  36%  and  24%  for  titanium  and  PEEK,
respectively.  Similarly,  bone  in  direct  contact,  or  apposition,  with  our  silicon  nitride,  titanium  and  PEEK  was  59%,  19%  and  8%,
respectively. As is common, in the presence of bacteria, new bone formation within the surgical site was suppressed, but still significantly
greater  for  our  silicon  nitride  than  for  the  other  two  biomaterials.  Observed  new  bone  growth  within  the  surgical  site  surrounding  our
silicon nitride was 41%, compared with 26% and 21% for titanium and PEEK, respectively. At the implant interface, the bone apposition
for our silicon nitride, titanium and PEEK was 23%, 9% and 5%, respectively. To further characterize the extent of osteointegration, the
force  needed  to  separate  each  implant  from  its  surrounding  bone  was  measured.  A  larger  force  needed  to  separate  the  implant  is  an
indication of improved osteointegration. At three months after implantation, in the absence of bacteria, the force required to separate our
silicon nitride from its surrounding bone was approximately three times that of PEEK, and nearly two times that of titanium. In the presence
of  bacteria,  there  was  effectively  no  separation  force  required  for  PEEK,  indicating  essentially  no  osteointegration.  Our  silicon  nitride
required over five times the force to separate it from its surrounding bone in the presence of bacteria in comparison to titanium.

7

 
 
 
 
 
 
 
 
 
 
In 2008, we conducted an animal study in which we evaluated the level of osteointegration of our porous silicon nitride with a knee-defect
model in adult sheep. At three months after implantation, three out of five of the silicon nitride implants had extensive new bone formation
at and into the implant surface, showing that the bone had grown into our porous silicon nitride to a depth of 3 millimeters, or mm. This
animal study demonstrated the rapid osteointegration potential of our porous silicon nitride composition.

Hardness, Strength and Resistance to Fracture

Comparative Information

As shown in the table of comparative information publicly available about various biomaterials below:

● the hardness,  or  a  material’s  resistance  to  deformity,  of  silicon  nitride  is  comparable  to  traditional  ceramics,  but  is  substantially

higher than either polymers or metals;

● the strength of silicon nitride is comparable or higher than metals and traditional ceramics, and is about sixteen to fifty-five times

stronger than highly-cross-linked polyethylene, and four to eight times stronger than PEEK; and

● silicon nitride  has  the  highest  fracture  resistance  of  any  medical  ceramic  material  and  is  three  to  eleven  times  more  resistant  to
fracture than PEEK or highly-cross-linked polyethylene. This is due to the interwoven microstructure of silicon nitride. Metals have
the highest fracture resistance.

Comparison of Mechanical Properties Among Orthopedic Biomaterials

Material

Silicon Nitride  
Aluminum Oxide Ceramic
Zirconia-Toughened Alumina Ceramic
PEEK
Highly-Cross-Linked Polyethylene Polymer
Cobalt-Chromium Metal
Titanium Alloy Metal

Hardness
(GPa)(1)
13 – 16
14 – 19
12 – 19
0.09 – 0.28
0.03 – 0.07
3 – 4
3 – 4

Strength
(MPa)(1)
800 – 1200
300 – 500
700 – 1150
160 – 180
22 – 48
700 – 1000
920 – 980

Fracture
Resistance
(MPam1/2)(1)
8 – 11
3 – 5
5 – 10
2 – 3
1 – 2
50 – 100
75

(1) GPa is a giga-pascal. Pascals are a measure of pressure. MPam1/2 is mega-pascal times a square root meter and is a measure related to

the energy required to initiate fracture of a material.

We believe that the combination of high hardness, strength and fracture resistance positions our silicon nitride as an ideal biomaterial for
many medical applications.

Burst Strength

In 2006, we conducted in-house comparative “burst strength” tests on femoral heads made from our silicon nitride produced by a contract
manufacturer to our specifications and femoral heads made from one of the strongest commercially available ceramics, BIOLOX®  delta
(zirconia-toughened alumina). These tests were performed on three designs of 28 mm femoral heads using accepted testing protocols. The
tests involved applying a load to each femoral head while mounted on a cobalt-chromium simulated hip implant stem, until the head burst.
This enabled us to directly compare the strength of the femoral heads made of the two biomaterials. The results also provided an indication
of each biomaterial’s resistance to fracture. The results of these tests are shown in the chart below.

8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
   
 
   
 
 
 
 
 
 
 
The average burst test strength for the silicon nitride femoral heads in these tests was 75 kilonewtons, or kNs, compared with 65 kN for
BIOLOX® delta, or about a 15% improvement. The burst strengths observed in our tests for BIOLOX® delta femoral heads are comparable
to  those  observed  by  an  independent  party  testing  the  same  design  BIOLOX®  delta  femoral  heads  as  we  did.  We  also  conducted  burst
strength tests of 36 mm femoral heads made from our silicon nitride which showed those femoral heads had burst strengths that averaged
164 kN.

Resistance to Wear

In 2011, we commissioned an independent laboratory to conduct a wear study using our silicon nitride femoral heads. We tested our 28 mm
silicon  nitride  femoral  heads  articulated  against  cross-linked  polyethylene  acetabular  liners  and  our  40  mm  silicon  nitride  femoral  heads
articulated  against  cross-linked  polyethylene  acetabular  liners  using  well-established  protocols  in  a  hip  simulator  for  their  wear
performance  over  5  million  cycles.  We  then  compared  the  results  for  our  silicon  nitride  product  candidates  to  the  results  for  the  cobalt
chrome femoral head and publicly available data from other commonly paired products. The results and comparison showed that:

● our silicon nitride-on-cross-linked polyethylene had approximately half the wear rate of that publicly reported for cobalt chrome-on-

cross-linked polyethylene articulating hip components; and

● our silicon  nitride-on-cross-linked  polyethylene  had  comparable  wear  to  that  publicly  reported  for  traditional  oxide  ceramic-on-

cross-linked polyethylene articulating hip components.

Antibacterial Properties

The  results  of  the  two  studies  at  Brown  University  in  2012,  demonstrate  that  our  solid  silicon  nitride  has  antibacterial  properties.  The
objective of the in vitro study was to determine how our silicon nitride, PEEK and titanium interact with bacteria, protein and bone cells
without the use of antibiotics and compared the growth of five different types of bacteria on silicon nitride, PEEK and titanium over time.
Live bacteria counts were between 8 to 30 times lower on silicon nitride than PEEK and up to 8 times lower on silicon nitride than titanium.

In  the in vivo  study,  bacteria  were  applied  to  the  biomaterials  before  implantation.  Three  months  after  implantation,  no  infection  was
observed  with  silicon  nitride,  whereas  both  PEEK  and  titanium  showed  infection.  The  data  demonstrate  that  our  silicon  nitride  inhibits
biofilm formation and bacterial colonization around the biomaterial.

Antiviral and Antifungal Properties

Antiviral: Our data have shown that off-stoichiometric reactions at the surface of our silicon nitride can inactivate different types of single-
strand  RNA  viruses.  This  antiviral  property  derives  from  reactive  nitrogen  species  without  harm  to  mammalian  cells.  Testing  based  on
polymerase chain reaction tests of viral RNA and  in situ Raman spectroscopy suggest that our material is effective in counteracting several
viruses relevant to public health concerns, such as Influenza A, Feline calcivirus, and Enterovirus.

9

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Antfungal: We have conducted preliminary studies which suggest that our silicon nitride may be effective against fungal microbes. After
sintering and processing, powdered silicon nitride was dissolved in a 1.5 vol.% aqueous solution that underwent field testing on two species
of grape vine leaves that were infected with a fungal pathogen Plasmopara viticola. After 1 minute of exposure to our silicon nitride, the
infected area of the leaves was reduced by ~95%. The likely mechanism likely involves electrical attraction to, and attachment of silicon
nitride particles to oppositely-charged pathogen spores.

Imaging Compatibility

In 2007, we conducted a study to compare the imaging characteristics of test blanks made of PEEK, the metals titanium and tantalum, and
silicon nitride using a cadaver human vertebral body. Images of the vertebral body and the blanks were obtained using X-ray, CT and MRI
under identical conditions. We assessed the radiolucent characteristics of the blanks in X-ray images quantitatively, assessed the presence
of scatter in CT qualitatively and assessed distortion in MRI quantitatively. In X-ray, the metal blanks did not permit visualization of the
underlying bone of the vertebral body, while PEEK was transparent, rendering its location difficult to determine. The silicon nitride blank
had an intermediate radiolucency that rendered it visible and allowed a visual assessment of the underlying bone of the vertebral body. CT
and MRI of the metal blanks indicated the presence of distortion while silicon nitride and PEEK exhibited no scattering.

Our Forms of Silicon Nitride

To  control  the  quality,  cost  and  availability  of  our  silicon  nitride  products  and  product  candidates,  we  operate  our  own  manufacturing
facility. Our 54,000 square foot corporate building includes a 30,000 square foot FDA Registered and ISO 13485 certified medical device
manufacturing  space.  It  is  equipped  with  state-of-the-art  powder  processing,  spray  drying,  pressing  and  computerized  machining
equipment, sintering furnaces, and other testing equipment that enables us to control the entire manufacturing process for our silicon nitride
products  and  product  candidates.  To  our  knowledge,  we  are  the  only  vertically  integrated  silicon  nitride  orthopedic  medical  device
manufacturer  in  the  world.  All  operations  with  the  exceptions  of  raw  material  production,  cleaning,  packaging  and  sterilization  are
performed  in-house.  We  purchase  raw  materials,  consisting  of  silicon  nitride  ceramic  powder  and  dopant  chemical  compounds,  from
several  vendors  which  are  ISO  registered  and  approved  by  us.  These  raw  materials  are  characterized  and  tested  in  accordance  with  our
specifications and then blended to formulate our silicon nitride. We believe that there are multiple vendors that can supply us these raw
materials  and  we  continually  monitor  the  quality  and  pricing  offered  by  our  vendors  to  ensure  high  quality  and  cost-effective  supply  of
these materials.

The  chemical  composition  of  our  in-house  formulation  of  silicon  nitride  and  our  processing  and  manufacturing  experience  allow  us  to
produce silicon nitride in four distinct forms. This capability provides us with the ability to utilize our silicon nitride biomaterial in a variety
of  ways  depending  on  the  intended  application,  which,  together  with  our  silicon  nitride’s  key  characteristics,  distinguishes  us  from
manufacturers of products using other biomaterials.

We currently produce silicon nitride for use in our commercial products and product candidates in the following forms:

● Solid Silicon Nitride.  This  form  of  silicon  nitride  is  a  fully  dense,  load-bearing  solid  used  for  devices  that  require  high strength,
toughness,  fracture  resistance  and  low  wear,  including  interbody  spinal  fusion  devices,  hip  and  knee  replacement implants,  and
dental implants.

10

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● Porous Silicon Nitride. While this form of silicon nitride has a chemical composition that is identical to that of our monolithic solid
silicon nitride, this formulation has a porous structure, which is engineered to mimic cancellous bone, the spongy bone tissue that
typically makes up the interior of human bones. Our porous silicon nitride has interconnected pores ranging in size between about
90 and 600 microns, which is similar to that of cancellous bone. This form of silicon nitride can be used for the promotion of bone
in-growth and attachment. We believe our porous silicon nitride can act as a substitute for the  orthobiologics currently used to fill
interbody devices in an effort to stimulate fusion, as a bone void filler, and as a porous scaffold for medical devices.

● Composite of Solid and Porous Silicon Nitride. This form of silicon nitride is a combination, or composite, of our solid monolithic
and porous formulations of silicon nitride. This composite may be used to manufacture devices and implants that mimic the structure
of natural bone by incorporating both a fully dense, load-bearing solid component on the outside and a porous component intended
to promote bone in-growth on the inside. This composite form of silicon nitride is used in interbody spinal fusion devices and can be
used in components for total hip and knee replacement implants.

● Composite of Silicon Nitride and PEEK. We have demonstrated in the laboratory that it is possible to compound our silicon nitride
powder and the polymer PEEK and that the ensuing composite material maintains the bioactive properties of silicon nitride. We
have  engaged  commercial partners  to  assist  us  in  developing  this  technology.  This  composite  material  would  allow the
straightforward machinability of a complex device that would be more challenging to manufacture from silicon nitride alone.

● Silicon Nitride Coating. With a similar chemical composition as our other forms of silicon nitride, this form of silicon nitride can be
applied as an adherent coating to metallic substrates, including cobalt-chromium, titanium and steel alloys, polymers, and ceramics.
We believe applying an extremely thin layer of silicon nitride as a coating may provide a highly wear-resistant articulation surface,
such  as  on  femoral  heads,  which  may  reduce  problems  associated  with  metal  or  polymer  wear  debris.  We also  believe  that  the
silicon nitride coating can be applied to devices that require firm fixation and functional connections between the device or implant
and  the  surrounding  tissue,  such  as  hip  stems  and  screws.  The  use  of  silicon  nitride  coating may  also  create  an  antibacterial,
antiviral,  and  antifungal  barrier  between  the  device  and  the  adjacent  bone  or  tissue.  We  are  currently  evaluating  several  different
coating technologies.

11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We believe we can use our silicon nitride technology platform to become a leading biomaterial company and have the following principal
competitive strengths:

Our Competitive Strengths

● Sole Provider of Silicon Nitride Medical Devices. We believe we are the only company that designs, develops, manufactures and
sells medical grade silicon nitride-based products. Due to its key characteristics, we believe our silicon nitride enables us to offer
new  and  transformative  products  across  multiple  medical  specialties.  In  addition,  with  the  FDA  clearance  of  our silicon  nitride
Valeo  products,  we  are  the  only  company  to  develop  and  manufacture  a  ceramic  for  use  in  FDA  cleared  spinal  fusion  medical
devices in the United States.

● In-House Manufacturing  Capabilities  for  Implantable  Medical  Devices. We  operate  a  30,000  square  foot  manufacturing  facility
located at our corporate headquarters in Salt Lake City, Utah. This operation complies with the FDA’s quality system regulation,  or
QSR, and is certified under the International Organization for Standardization’s, or ISO, standard 13485 for medical devices. This
facility allows us to rapidly design and produce silicon nitride products while controlling the entire manufacturing process from raw
material to finished goods.

● Extensive Network  of  Scientific  Collaborators.  We  have  developed  strong,  multi-year,  collaborative  relationships  with  surgeons
who have  used  our  products.  These  surgeons  have  supported  us  in  collecting  clinical  data  on  silicon  nitride  and  on  reporting  the
successful patient outcomes they have observed. We also have long standing relations with university laboratories in Japan and the
US and have recently been invited to participate in a European consortium on silicon nitride. Our partner in Japan has been at the
forefront of silicon nitride biomaterial research for several years and has published extensively on the subject.

● Highly Experienced Management and Technical Advisory Team. Members of our management team have extensive experience in
silicon nitride, ceramics, research and development, manufacturing and operations, product development, launching of new products
into  the  orthopedics  market  and  selling  to  hospitals  through  direct  sales  organizations,  distributors,  manufacturers  and  other
orthopedic  companies.  We  also  collaborate  with  a  network  of  leading  technical  (academic  and  surgeon)  advisors  in  the  design,
development and use of our silicon nitride products and product candidates.

Our Strategy

Our goal is to become a leading biomaterial company focused on using our silicon nitride technology platform to develop, manufacture and
commercialize a broad range of medical devices. Key elements of our strategy to achieve this goal are the following:

● Support CTL and drive further adoption of silicon nitride interbody spinal fusion devices. We have entered into a 10-year agreement
to manufacture all of CTL Medical’s requirements of silicon nitride based spinal implant products. This includes the current product
line as well as new applications for silicon nitride in the spine.

● Develop a commercial opportunity outside of spine. We have had active programs outside of spine for several years. We expect to

commercialize on one or more of these in the near future.

● Develop new silicon nitride manufacturing technologies. Our current manufacturing process has allowed us to successfully produce
spinal  implants  for  over  10  years.  However,  this  process  has  limitations  and  we  are  actively  pursuing  other  manufacturing
technologies such as additive manufacturing, and surface coating technologies.

● Make improvements  to  our  current  formulation  of  silicon  nitride  to  increase  the  bioactive  properties  of  the  material.  We  have
demonstrated in the laboratory that we can make our material more bioactive. This work has been independently corroborated by
researchers in other parts of the world. We expect that the availability of silicon nitride with enhanced bioactivity would open up
new markets to us.

12

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● Apply our silicon nitride technology platform to other OEM opportunities – medical and non-medical We believe our biomaterial
expertise,  flexible  manufacturing  process,  and  strong  intellectual  property  will  allow  us  to  transition  currently  available medical
device products made of inferior biomaterials and manufacture them using silicon nitride and our technology platform to improve
their characteristics. We are seeking partnerships to utilize our capabilities and manufacture products for medical and non-medical
original equipment manufacturer (“OEM”) and private label partnerships. We see specific opportunities  in markets such as dental,
maxillofacial, total hip and knee joint replacements, and sports medicine.

Overview

Market Opportunity

We  believe  our  silicon  nitride  biomaterial  technology  platform  provides  us  with  numerous  competitive  advantages  in  the  biomaterials
market. We manufactured interbody spinal fusion devices for our own retail spine business from 2008 to 2018, presently manufacture these
for CTL Medical, and have a 10-year exclusive right to continue to manufacture them for CTL Medical. We are developing products on our
own  behalf  and  for  third  party  manufacturers  –  including  CTL  Medical  -  for  use  as  components  in  spine,  total  hip  and  knee  joint
replacements,  as  well  as  dental  and  maxillofacial  applications.  We  believe  we  can  also  utilize  our  silicon  nitride  technology  platform  to
develop future products in additional markets, such as the sports medicine, extremities, trauma, and non-medical markets.

We believe that the main drivers for growth within the orthopedic biomaterials market are the following:

● Introduction of  New  Technologies.   Better  performing  and  longer-lasting  biomaterials,  improved  diagnostics,  and  advances  in
surgical procedures  allow  for  surgical  intervention  earlier  in  the  continuum  of  care  and  better  outcomes  for  patients.  We  believe
surgical options using better performing and longer-lasting biomaterials will gain acceptance among surgeons and younger patients
and drive accelerated growth and increase the size of the spinal fusion and joint replacement markets.

● Favorable and  Changing  Demographics. With  the  growing  number  of  elderly  people,  age-related  ailments  are  expected  to  rise
sharply, which we believe will increase the demand and need for biomaterials and devices with improved performance capabilities.
Also, middle-aged and older patients increasingly expect to enjoy active lifestyles, and consequently demand effective treatments
for  painful  spine  and  joint  conditions,  including  better  performing  and  longer-lasting  interbody  spinal  fusion  devices  and joint
replacements.

● Market Expansion into New Geographic Areas. We anticipate that demand for biomaterials and the associated medical devices will
increase  as  the  applications  in  which  biomaterials  are  used  are  introduced  to  and  become  more  widely  accepted  in  underserved
countries, such as Brazil and China. We also expect to introduce our products into established markets such as Australia and Japan.

The Interbody Spinal Fusion Market

We believe there is opportunity for significant growth in the spinal fusion market for interbody spinal fusion devices manufactured with
silicon nitride. Currently, in spinal fusion procedures conducted in the United States today, a significant majority utilize interbody devices
comprised of PEEK and bone, with occasional use of metals and other materials including ceramics. The market for interbody spinal fusion
devices has shifted over time as new biomaterials with superior characteristics have been incorporated into these devices and have launched
into the market. We believe the market has reached another inflection point as surgeons and hospitals recognized the limitations of devices
currently available. Similarly, we believe silicon nitride interbody spinal fusion products address the key limitations of other biomaterials
currently used in interbody spinal fusion devices and demonstrate superior characteristics needed to improve clinical outcomes.

We selected this market as the first application for our silicon nitride technology because of the limitations of currently available products,
its size, and the key characteristics silicon nitride possesses, which are critical for superior interbody spinal fusion outcomes.

13

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● Promotion of Bone Growth. The biomaterial should be both osteoconductive and create an osteoinductive environment to promote
bone growth in and around the interbody device to further support fusion and stability. Osteoconduction occurs when material serves
as  a  scaffold  to  support  the  growth  of  new  bone  in  and  around  the  material.  Osteoinduction  involves  the  stimulation  of
osteoprogenitor cells to develop, or differentiate, into osteoblasts, which are cells that are needed for bone growth. A material which
stimulates bone growth and accelerates fusion rates is ideal in spinal fusion procedures.

● Antibacterial. Spinal  fusion  devices  can  become  colonized  with  bacteria,  which  may  limit  fusion  to  adjacent  vertebrae  or  cause
serious infection. Treating device-related infection is costly and generally requires repeat surgery, including surgery to replace the
device, referred to as revision surgery, which may extend hospital stays, suffering and disability for patients. A biomaterial  that has
antibacterial  properties  can  reduce  the  incidence  of  bacteria  colonization  in  and  around  the  interbody  device  that can  lead  to
infection, revision surgery and associated increased costs.

● Imaging Compatibility. The  biomaterial  should  be  visible  through,  and  not  inhibit  the  effective  use  of,  common  surgical  and
diagnostic imaging techniques, such as X-ray, CT and MRI. These imaging techniques are used by surgeons during and after spinal
fusion procedures to assist in the proper placement of interbody devices and to assess the quality of post-operative bone fusion.

● Strength and Resistance to Fracture. The biomaterial should be strong and resistant to fracture during implantation of the device and
to successfully restore intervertebral disc space and spinal alignment during the fusion process. The biomaterial should have high
flexural strength, which is the ability to resist breakage during bending, and high compressive strength, which is the ability to resist
compression  under  pressure,  to  withstand  the  static  and  dynamic  forces  exerted  on  the  spine  during daily  activities  over  the  long
term.

Spinal Fusion Products

Current spinal fusion products that we manufacture for CTL Medical are:

Valeo Interbody Fusion Devices
AL: Anterior Lumbar
PL: Posterior Lumbar
OL: Oblique Lumbar
TL: Transforaminal Lumbar
LL: Lateral Lumbar
C: Cervical
CORP: Corpectomy
C+CSC (cleared in Australia and the EU but not the USA)
C+CSC with Lumen

The Dental Market

Generation

  2nd
  1st and 2nd
  1st and 2nd
  1st and 2nd
  2nd
  1st and 2nd
  1st
  1st
  1st

We believe there is opportunity for significant growth in the dental implant market for dental implant devices manufactured with silicon
nitride and are pursuing this opportunity aggressively. We have entered into a joint development agreement with a dental implant design
company and distributor of dental technologies for the development of a silicon nitride based dental implant system and devices.

When a tooth is removed, one common approach to restoration is to use a multi-part construct consisting of an titanium implant (or screw),
a zirconia abutment, and a crown. Potential applications for silicon nitride in this procedure include the implant and the abutment.

14

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Silicon  nitride  is  appealing  because  this  application  takes  advantage  of  the  same  bioactive  properties  discussed  in  the  spinal  implant
section:

● Promotion of bone growth
● Antibacterial
● Imaging compatible
● Hard, strong, resistant to fracture and wear

We also believe it may be possible to leverage our knowledge of medical device manufacturing of ceramics and commercialize products
for the dental market made from ceramics other than silicon nitride.

The Hip and Knee Joint Replacement Market

We  believe  there  is  opportunity  for  significant  growth  in  the  hip  and  knee  joint  replacement  market  for  interbody  devices  manufactured
with silicon nitride.

Total  joint  replacement  involves  removing  the  diseased  or  damaged  joint  and  replacing  it  with  an  artificial  implant  consisting  of
components made from several different types of biomaterials. The key components of a total hip implant include an artificial femoral head,
consisting of a ball mounted on an artificial stem attached to the femur, and a liner, which is placed inside a cup affixed into the pelvic
bone. The femoral head and liner move against each other to replicate natural motion in what is known as an articulating implant. Total
knee replacement implants also use articulating components and are comprised of the following four main components: a femoral condyle,
which is a specially shaped bearing that is affixed to the lower end of the femur; a tibial tray that is affixed to the upper-end of the tibia; a
tibial insert that is rigidly fixed to the tibial tray and serves as the surface against which the femoral condyle articulates; and a patella, or
knee cap, which also articulates against the femoral condyle.

Implants for total hip and knee replacements are primarily differentiated by the biomaterials used in the components that articulate against
one another. The combinations of biomaterials most commonly used in hip and knee replacement implants in the United States are metal-
on-cross-linked  polyethylene  and  traditional  oxide  ceramic-on-cross-linked  polyethylene.  The  use  of  hip  replacement  implants
incorporating metal-on-metal and traditional oxide ceramic-on-traditional ceramic biomaterials experienced a steep decline in the United
States  over  the  last  several  years  due  to  their  significant  limitations.  We  believe  that  the  most  commonly  used  biomaterials  in  joint
replacement  implants  also  have  limitations,  and  do  not  possess  all  of  the  following  key  characteristics  required  for  optimal  total  joint
replacement implants:

● Resistance to  Wear.  The  biomaterials  should  have  sufficient  hardness  and  toughness,  as  well  as  extremely  smooth  surfaces,  to
effectively resist  wear.  Because  the  articulating  implants  move  against  each  other,  they  are  subject  to  friction,  which  frequently
leads to abrasive wear and the release of small wear particles. This may cause an inflammatory response which results in osteolysis,
or bone loss. Surgeons have identified osteolysis as a leading cause of joint implant failure, resulting in the need for costly revision
surgery  to  replace  the  failed  implant.  One  of  the  most  commonly  used  combinations  of  biomaterials,  metal-on-cross-linked
polyethylene,  as  well  as  metal-on-metal  implants,  tends  to  generate  a  large  number  of  metal  wear  particles,  which  can  cause
osteolysis  and  a  moderate  to  severe  allergic  reaction  to  the  metal,  referred  to  as  metal  sensitivity.  While  less  common,  metal
implants may also cause a serious medical condition called metallosis, which involves the deposition and build-up of metal debris in
the soft tissues of the body. Both metal sensitivity and metallosis can result in revision surgery. In addition,  we believe traditional
oxide ceramics currently used in total joint replacements accelerate wear of the cross-linked polyethylene liner as compared to our
non-oxide ceramic composition found in our silicon nitride biomaterial platform.

● Non-Corrosive. The biomaterials should be non-corrosive and should not cause adverse patient reactions. Metal placed in the human
body corrodes over time and also results in the formation of metal ions, which leads to metal sensitivity in approximately 10% to
15% of the population and, less commonly, metallosis. As a result, there are significant increased risks from using metal-on-cross-
linked polyethylene and metal-on-metal implants.

● Hardness, Strength and Resistance to Fracture. The biomaterials should be hard, strong and resistant to fracture to adequately bear
the significant loads placed on the hip and knee joints during daily activities. We believe there are strength limitations associated
with traditional oxide ceramic-on-cross-linked polyethylene and traditional oxide ceramic-on-traditional oxide ceramic implants.

● Antibacterial. The  biomaterials  should  have  antibacterial  properties  to  reduce  the  risk  of  bacteria  colonization,  infection,  revision
surgeries  and  associated  increased  costs.  None  of  the  most  commonly  used  biomaterials  in  joint  replacement  implants  have
antibacterial properties.

15

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our Total Hip Implant Product Candidates

We  have  developed  a  femoral  head  that  is  made  from  our  solid  silicon  nitride,  which  could  be  used  for  total  hip  replacement  product
candidates.  This  femoral  head  is  expected  to  articulate  against  a  cross-linked  polyethylene  liner  fixed  into  a  metal  acetabular  cup.  Most
recently we participated in a university study that demonstrated the comparatively better behavior of silicon nitride femoral heads in taper
fretting  corrosion  behavior  study. As  we  continue  to  gather  evidence  that  silicon  nitride  femoral  heads  are  superior  in  terms  of  wear
performance,  taper  corrosion,  strength  and in  vitro  hydrothermal  stability,  we  eventually  intend  to  commercialize  this  product  in
cooperation with a strategic partner. However, clearance of these types of devices by the FDA will be required. Currently, the FDA has
indicated that a limited one to two-year clinical trial may be necessary to obtain clearance.

Our Total Knee Implant Product Candidates

We have developed a femoral condyle design made from our solid silicon nitride. The femoral condyle component will attach to the lower
end of the femur. The femoral condyle is expected to articulate against a cross-linked polyethylene tibial insert that will attach to the tibial
tray  at  the  upper  end  of  the  tibia,  which  we  expect  will  be  made  from  metal.  We  have  successfully  made  prototypes  of  this  design.
Following  the  potential  clearance  of  the  femoral  head  components  (discussed  above),  we  intend  to  initiate  biomechanical  testing  with  a
strategic partner for silicon nitride components for use in knee replacement procedures to support a 510(k) submission to the FDA. If this
clearance is eventually obtained, we intend to commercialize our products for use in total knee replacement surgeries post-FDA clearance.

Other Product Opportunities

Our  silicon  nitride  technology  platform  is  adaptable,  and  we  believe  it  may  be  used  to  develop  products  to  address  other  significant
opportunities, such as in the cranial-maxillofacial, extremities, sports medicine and trauma markets.

We also believe our coating technology may be used to enhance metal products as well as other commercially available metal or PEEK
spinal fusion and joint replacement products. We have produced feasibility prototypes of dental implants, other components for use in total
hip  implants  in  addition  to  our  total  hip  and  knee  implant  product  candidates  discussed  above,  a  suture  anchor  for  sports  medicine
applications,  an  osteotomy  wedge  for  extremities  applications,  and  prototypes  of  silicon  nitride-coated  plates  for  potential  trauma
applications. We have also developed a process to apply our silicon nitride as a coating on other materials which may find applications in
markets outside of the medical device industry.

Our recent discoveries of the antiviral and antifungal properties of silicon nitride have opened up completely new opportunities for us in the
consumer and agriculture markets.

The FDA has not evaluated any of these potential products and we are not currently advancing the development of any of these product
candidates.  We  plan  to  collaborate  with  medical  device  companies  to  complete  the  development  of  and  commercialize  any  product
candidates we advance in these areas or develop any one of them ourselves if sufficient resources should become available.

We rely on a combination of patents, trademarks, trade secrets, nondisclosure agreements, proprietary information ownership agreements
and  other  intellectual  property  measures  to  protect  our  intellectual  property  rights.  We  believe  that  in  order  to  have  a  competitive
advantage, we must continue to develop and maintain the proprietary aspects of our technologies.

Intellectual Property

16

 
 
 
 
 
 
 
 
 
 
 
 
 
As  of  the  end  of  January  2019,  we  had  thirteen  issued  U.S.  patents,  three  pending  U.S.  patent  applications,  and  one  pending  PCT
application. Our first issued patent expired in 2016, with the last of these patents expiring in 2036. The core patent (US 6,881,229) expires
in 2022.

We have seven U.S. patents directed to articulating implants using our high-strength, high toughness doped silicon nitride solid ceramic.
The  issued  patents,  which  include  US  6,881,229;  US  7,666,229;  US  7,780,738;  US  8,123,812;  US  8,133,284;  US  9,051,639;  and  US
9,517,136 begin to expire in 2022.

We also have two U.S. patents related to our CSC technology that are directed to implants that have both a dense load-bearing, or cortical,
component and a porous, or cancellous, component, together with a surface coating. These issued patents, US 8,133,284 and US 9,649,197,
expire in 2022 and 2035, respectively.

We  also  have  three  U.S.  patents  that  we  acquired  in  July  2012  from  Dytech  Corporation  Ltd.,  or  Dytech,  directed  to  manufacturing
processes for the production of porous ceramics for use in our orthopedic implants. These patents include US 5,563,106 and US 5,705,448,
which have now expired; and US 6,617,270, which expires in 2019. Under our acquisition agreement with Dytech, Dytech granted to us a
perpetual, irrevocable and exclusive license, including the right to grant sublicenses, to certain improvements and know-how related to the
acquired patents. In return, we are required to pay Dytech a low single-digit royalty on net sales of products sold by us, our affiliates, or our
licensees  that  are  covered  by  one  or  more  valid  claims  of  these  patents,  and  a  percentage  of  any  non-royalty  licensing  income  we  may
receive in the event we grant a license to others.

Our remaining issued patents and pending applications are directed to additional aspects of our products and technologies including, among
other things:

● designs for intervertebral fusion devices;
● designs for hip implants;
● designs for knee implants;
● implants with improved antibacterial characteristics;
● implants with improved wear performance; and
● Antipathogenic compositions.

We  also  expect  to  rely  on  trade  secrets,  know-how,  continuing  technological  innovation  and  in-licensing  opportunities  to  develop  and
maintain  our  intellectual  property  position.  However,  trade  secrets  are  difficult  to  protect.  We  seek  to  protect  the  trade  secrets  in  our
proprietary  technology  and  processes,  in  part,  by  entering  into  confidentiality  agreements  with  commercial  partners,  collaborators,
employees, consultants, scientific advisors and other contractors and into invention assignment agreements with our employees and some of
our  commercial  partners  and  consultants.  These  agreements  are  designed  to  protect  our  proprietary  information  and,  in  the  case  of  the
invention assignment agreements, to grant us ownership of the technologies that are developed.

Competition

The main alternatives to our silicon nitride biomaterial include: PEEK, which is predominantly manufactured by Invibio; BIOLOX®  delta,
which is a traditional oxide ceramic manufactured by CeramTec; allograft bone; metals; and coated metals.

We believe our main competitors in the orthopedic implant market, which utilize a variety of competitive biomaterials, include: Medtronic,
Inc.;  DePuy  Synthes  Companies,  a  group  of  Johnson  &  Johnson  companies;  Stryker  Corporation;  Biomet,  Inc.;  Zimmer  Holdings,  Inc.;
Smith & Nephew plc; and Aesculap Inc. Presently, these companies buy ceramic components on an OEM basis from manufacturers such as
CeramTec, Kyocera and CoorsTek, Inc., among others. We anticipate that these and other orthopedic companies and OEMs will seek to
introduce new biomaterials and products that compete with ours.

17

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Competition within the industry is primarily based on technology, innovation, product quality, and product awareness and acceptance by
surgeons. Our principal competitors have substantially greater financial, technical and marketing resources, as well as significantly greater
manufacturing capabilities than we do, and they may succeed in developing products that render our implants and product candidates non-
competitive. Our ability to compete successfully will depend upon our ability to develop innovative products with advanced performance
features based on our silicon nitride technologies.

Government Regulation of Medical Devices

Governmental authorities in the United States, at the federal, state and local levels, and other countries extensively regulate, among other
things, the research, development, testing, manufacture, labeling, promotion, advertising, distribution, marketing and export and import of
products such as those we are commercializing and developing. Failure to obtain approval or clearance to market our products and products
under  development  and  to  meet  the  ongoing  requirements  of  these  regulatory  authorities  could  prevent  us  from  continuing  to  market  or
develop our products and product candidates.

United States

Pre-Marketing Regulation

In  the  United  States,  medical  devices  are  regulated  by  the  FDA.  Unless  an  exemption  applies,  a  new  medical  device  will  require  either
prior  510(k)  clearance  or  approval  of  a  premarket  approval  application,  or  PMA,  before  it  can  be  marketed  in  the  United  States.  The
information that must be submitted to the FDA in order to obtain clearance or approval to market a new medical device varies depending on
how  the  medical  device  is  classified  by  the  FDA.  Medical  devices  are  classified  into  one  of  three  classes  on  the  basis  of  the  controls
deemed  by  the  FDA  to  be  necessary  to  reasonably  ensure  their  safety  and  effectiveness.  Class  I  devices,  which  are  those  that  have  the
lowest level or risk associated with them, are subject to general controls, including labeling, premarket notification and adherence to the
QSR. Class II devices are subject to general controls and special controls, including performance standards. Class III devices, which have
the  highest  level  of  risk  associated  with  them,  are  subject  to  most  of  the  previously  identified  requirements  as  well  as  to  premarket
approval.  Most  Class  I  devices  and  some  Class  II  devices  are  exempt  from  the  510(k)  requirements,  although  manufacturers  of  these
devices are still subject to registration, listing, labeling and QSR requirements.

A 510(k) premarket notification must demonstrate that the device in question is substantially equivalent to another legally marketed device,
or predicate device, that did not require premarket approval. In evaluating the 510(k), the FDA will determine whether the device has the
same intended use as the predicate device, and (a) has the same technological characteristics as the predicate device, or (b) has different
technological characteristics, and (i) the data supporting the substantial equivalence contains information, including appropriate clinical or
scientific data, if deemed necessary by the FDA, that demonstrates that the device is as safe and as effective as a legally marketed device,
and (ii) does not raise different questions of safety and effectiveness than the predicate device. Most 510(k)s do not require clinical data for
clearance, but the FDA may request such data. The FDA’s goal is to review and act on each 510(k) within 90 days of submission, but it
may take longer based on requests for additional information. In addition, requests for additional data, including clinical data, will increase
the time necessary to review the notice. If the FDA does not agree that the new device is substantially equivalent to the predicate device,
the new device will be classified in Class III, and the manufacturer must submit a PMA. Since July 2012, however, with the enactment of
the  Food  and  Drug Administration  Safety  and  Innovation Act,  or  FDASIA,  a  de  novo  pathway  is  directly  available  for  certain  low  to
moderate  risk  devices  that  do  not  qualify  for  the  510(k)  pathway  due  to  lack  of  a  predicate  device.  Modifications  to  a  510(k)-cleared
medical device may require the submission of another 510(k) or a PMA if the changes could significantly affect the safety or effectiveness
or constitute a major change in the intended use of the device.

Modifications  to  a  510(k)-cleared  device  frequently  require  the  submission  of  a  traditional  510(k),  but  modifications  meeting  certain
conditions may be candidates for FDA review under a Special 510(k). If a device modification requires the submission of a 510(k), but the
modification  does  not  affect  the  intended  use  of  the  device  or  alter  the  fundamental  scientific  technology  of  the  device,  then  summary
information  that  results  from  the  design  control  process  associated  with  the  cleared  device  can  serve  as  the  basis  for  clearing  the
application. A  Special  510(k)  allows  a  manufacturer  to  declare  conformance  to  design  controls  without  providing  new  data.  When  the
modification  involves  a  change  in  material,  the  nature  of  the  “new”  material  will  determine  whether  a  traditional  or  Special  510(k)  is
necessary. For example, in its Device Advice on How to Prepare a Special 510(k), the FDA uses the example of a change in a material in a
finger joint prosthesis from a known metal alloy to a ceramic that has not been used in a legally marketed predicate device as a type of
change  that  should  not  be  submitted  as  a  Special  510(k).  However,  if  the  “new”  material  is  a  type  that  has  been  used  in  other  legally
marketed devices within the same classification for the same intended use, a Special 510(k) is appropriate. The FDA gives as an example a
manufacturer  of  a  hip  implant  who  changes  from  one  alloy  to  another  that  has  been  used  in  another  legally  marketed  predicate.  Special
510(k)s are typically processed within 30 days of receipt.

18

 
 
 
 
 
 
 
 
 
 
The  PMA  process  is  more  complex,  costly  and  time  consuming  than  the  510(k)  clearance  procedure. A  PMA  must  be  supported  by
extensive data including, but not limited to, technical, preclinical, clinical, manufacturing, control and labeling information to demonstrate
to the FDA’s satisfaction the safety and effectiveness of the device for its intended use. After a PMA is submitted, the FDA has 45 days to
determine whether it is sufficiently complete to permit a substantive review. If the PMA is complete, the FDA will file the PMA. The FDA
is subject to performance goal review times for PMAs and may issue a decision letter as a first action on a PMA within 180 days of filing,
but if it has questions, it will likely issue a first major deficiency letter within 150 days of filing. It may also refer the PMA to an FDA
advisory panel for additional review and will conduct a preapproval inspection of the manufacturing facility to ensure compliance with the
QSR,  either  of  which  could  extend  the  180-day  response  target.  While  the  FDA’s  ability  to  meet  its  performance  goals  has  generally
improved during the past few years, it may not meet these goals in the future. A PMA can take several years to complete and there is no
assurance that any submitted PMA will ever be approved. Even when approved, the FDA may limit the indication for which the medical
device may be marketed or to whom it may be sold. In addition, the FDA may request additional information or request the performance of
additional clinical trials before it will reconsider the approval of the PMA or as a condition of approval, in which case the trials must be
completed after the PMA is approved. Changes to the device, including changes to its manufacturing process, may require the approval of a
supplemental PMA.

If  a  medical  device  is  determined  to  present  a  “significant  risk,”  the  manufacturer  may  not  begin  a  clinical  trial  until  it  submits  an
investigational  device  exemption,  or  IDE,  to  the  FDA  and  obtains  approval  of  the  IDE  from  the  FDA.  The  IDE  must  be  supported  by
appropriate data, such as animal and laboratory testing results and include a proposed clinical protocol. These clinical trials are also subject
to the review, approval and oversight of an institutional review board, or IRB, which is an independent and multi-disciplinary committee of
volunteers who review and approve research proposals, and the reporting of adverse events and experiences, at each institution at which
the clinical trial will be performed. The clinical trials must be conducted in accordance with applicable regulations, including but not limited
to the FDA’s IDE regulations and current good clinical practices. A clinical trial may be suspended by the FDA, the IRB or the sponsor at
any time for various reasons, including a belief that  the  risks  to  the  study  participants  outweigh  the  benefits  of  participation  in  the  trial.
Even if a clinical trial is completed, the results may not demonstrate the safety and efficacy of a device or may be equivocal or otherwise
not be sufficient to obtain approval.

Post-Marketing Regulation

After a device is placed on the market, numerous regulatory requirements apply. These include:

● compliance with  the  QSR,  which  require  manufacturers  to  follow  stringent  design,  testing,  control,  documentation,  record
maintenance, including  maintenance  of  complaint  and  related  investigation  files,  and  other  quality  assurance  controls  during  the
manufacturing process;

● labeling regulations,  which  prohibit  the  promotion  of  products  for  uncleared  or  unapproved  or  “off-label”  uses  and  impose other

restrictions on labeling; and

● medical device reporting obligations, which require that manufacturers investigate and report to the FDA adverse events, including
deaths, or serious injuries that may have been or were caused by a medical device and malfunctions in the device that would likely
cause or contribute to a death or serious injury if it were to recur.

19

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Failure  to  comply  with  applicable  regulatory  requirements  can  result  in  enforcement  action  by  the  FDA,  which  may  include  any  of  the
following sanctions:

● warning letters;

● fines, injunctions, and civil penalties;

● recall or seizure of our products;

● operating restrictions, partial suspension or total shutdown of production;

● refusal to grant 510(k) clearance or PMA approvals of new products;

● withdrawal of 510(k) clearance or PMA approvals; and

● criminal prosecution.

To  ensure  compliance  with  regulatory  requirements,  medical  device  manufacturers  are  subject  to  market  surveillance  and  periodic,  pre-
scheduled and unannounced inspections by the FDA, and these inspections may include the manufacturing facilities of our subcontractors.

International Regulation

International sales of medical devices are subject to foreign government regulations, which vary substantially from country to country. The
time required to obtain approval by a foreign country may be longer or shorter than that required for FDA approval, and the requirements
may differ. For example, the primary regulatory authority with respect to medical devices in Europe is that of the European Union. The
European Union consists of 28 countries and has a total population of over 500 million people. The unification of these countries into a
common  market  has  resulted  in  the  unification  of  laws,  standards  and  procedures  across  these  countries,  which  may  expedite  the
introduction of medical devices like those we are offering and developing. Norway, Iceland, Lichtenstein and Switzerland are not members
of the European Union but have transposed applicable European medical device laws into their national legislation. Thus, a device that is
marketed in the European Union may also be recognized and accepted in those four non-member European countries as well.

The European Union has adopted numerous directives and standards regulating the design, manufacture, clinical trials, labeling and adverse
event  reporting  for  medical  devices.  Devices  that  comply  with  the  requirements  of  relevant  directives  will  be  entitled  to  bear  CE
Conformity Marking, indicating that the device conforms to the essential requirements of the applicable directives and, accordingly, can be
commercially distributed throughout the European Union. Actual implementation of these directives, however, may vary on a country-by-
country basis. The CE Mark is a mandatory conformity mark on medical devices distributed and sold in the European Union and certifies
that a medical device has met applicable requirements.

The method of assessing conformity varies, but normally involves a combination of self-assessment by the manufacturer and a third-party
assessment  by  a  “Notified  Body.”  Notified  Bodies  are  independent  testing  houses,  laboratories,  or  product  certifiers  authorized  by  the
European Union member states to perform the required conformity assessment tasks, such as quality system audits and device compliance
testing. An assessment by a Notified Body based within the European Union is required in order for a manufacturer to distribute the product
commercially throughout the European Union. Medium and higher risk devices require the intervention of a Notified Body which will be
responsible for auditing the manufacturer’s quality system. The Notified Body will also determine whether or not the product conforms to
the  requirements  of  the  applicable  directives.  Devices  that  meet  the  applicable  requirements  of  E.U.  law  and  have  undergone  the
appropriate conformity assessment routes will be granted CE “certification.” The CE Mark is mandatory for medical devices sold not only
within the countries of the European Union but more generally within most of Europe. As many of the European standards are converging
with international standards, the CE Mark is often used on medical devices manufactured and sold outside of Europe (notably in Asia that
exports many manufactured products to Europe). CE Marking gives companies easier access into not only the European market but also to
Asian  and  Latin  American  markets,  most  of  whom  recognize  the  CE  Mark  on  medical  device  as  a  mark  of  quality  and  adhering  to
international standards of consumer safety, health or environmental requirements.

20

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Compliance with Healthcare Laws

We must comply with various U.S. federal and state laws, rules and regulations pertaining to healthcare fraud and abuse, including anti-
kickback and false claims laws, rules, and regulations, as well as other healthcare laws in connection with the commercialization of our
products. Fraud and abuse laws are interpreted broadly and enforced aggressively by various state and federal agencies, including the U.S.
Department of Justice, the U.S. Office of Inspector General for the Department of Health and Human Services and various state agencies.

We have entered into agreements with certain surgeons for assistance with the design of our products, some of whom we anticipate may
make referrals to us or order our products. A majority of these agreements contain provisions for the payments of royalties. In addition,
some surgeons currently own shares of our stock. We have structured these transactions with the intention of complying with all applicable
laws, including fraud and abuse, data privacy and security, and transparency laws. Despite this intention, there can be no assurance that a
particular  government  agency  or  court  would  determine  our  practices  to  be  in  full  compliance  with  such  laws.  We  could  be  materially
impacted if regulatory or enforcement agencies or courts interpret our financial arrangements with surgeons to be in violation of healthcare
laws, including, without limitation, fraud and abuse, data privacy and security, or transparency laws.

The U.S. federal Anti-Kickback Statute prohibits persons, including a medical device manufacturer (or a party acting on its behalf), from
knowingly or willfully soliciting, receiving, offering or paying remuneration, directly or indirectly, in exchange for or to induce either the
referral of an individual for a service or product or the purchasing, ordering, arranging for, or recommending the ordering of, any service or
product for which payment may be made by Medicare, Medicaid or any other federal healthcare program. This statute has been interpreted
to  apply  to  arrangements  between  medical  device  manufacturers  on  one  hand  and  healthcare  providers  on  the  other.  The  term
“remuneration” is not defined in the federal Anti-Kickback Statute and has been broadly interpreted to include anything of value, such as
cash payments, gifts or gift certificates, discounts, waiver of payments, credit arrangements, ownership interests, the furnishing of services,
supplies or equipment, and the provision of anything at less than its fair market value. Courts have broadly interpreted the scope of the law,
holding  that  it  may  be  violated  if  merely  “one  purpose”  of  an  arrangement  is  to  induce  referrals,  irrespective  of  the  existence  of  other
legitimate  purposes.  The Anti-Kickback  Statute  prohibits  many  arrangements  and  practices  that  are  lawful  in  businesses  outside  of  the
healthcare  industry.  Although  there  are  a  number  of  statutory  exemptions  and  regulatory  safe  harbors  protecting  certain  business
arrangements from prosecution, the exemptions and safe harbors are drawn narrowly, and practices that involve remuneration intended to
induce  prescribing,  purchasing  or  recommending  may  be  subject  to  scrutiny  if  they  do  not  qualify  for  an  exemption  or  safe  harbor.  Our
practices may not in all cases meet all of the criteria for safe harbor protection from federal Anti-Kickback Statute liability. The reach of the
Anti-Kickback Statute was broadened by the recently enacted Patient Protection and Affordable Care Act of 2010 and the Health Care and
Education Affordability Reconciliation Act of 2010, collectively, the Affordable Care Act or ACA, which, among other things, amends the
intent requirement of the federal Anti-Kickback Statute such that a person or entity no longer needs to have actual knowledge of the statute
or specific intent to violate it in order to have committed a violation. In addition, the ACA provides that the government may assert that a
claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for
purposes of the federal False Claims Act (discussed below) or the civil monetary penalties statute, which imposes fines against any person
who is determined to have presented or caused to be presented claims to a federal healthcare program that the person knows or should know
is for an item or service that was not provided as claimed or is false or fraudulent. In addition to the federal Anti-Kickback Statute, many
states  have  their  own  anti-kickback  laws.  Often,  these  laws  closely  follow  the  language  of  the  federal  law,  although  they  do  not  always
have the same scope, exceptions, safe harbors or sanctions. In some states, these anti-kickback laws apply not only to payments made by
government healthcare programs but also to payments made by other third-party payors, including commercial insurance companies.

Sales, marketing, consulting, and advisory arrangements between medical device manufacturers and sales agents and physicians are subject
to  the Anti-Kickback  Statute  and  other  fraud  and  abuse  laws.  Government  officials  have  focused  recent  enforcement  efforts  on,  among
other things, the sales and marketing activities of healthcare companies, including medical device manufacturers, and have brought cases
against individuals or entities whose personnel allegedly offered unlawful inducements to potential or existing customers in an attempt to
procure their business. We expect these activities to continue to be a focus of government enforcement efforts. Settlements of these cases by
healthcare companies have involved significant fines and penalties and, in some instances, criminal plea agreements. We are also aware of
governmental investigations of some of the largest orthopedic device companies reportedly focusing on consulting and service agreements
between these companies and orthopedic surgeons. These developments are ongoing, and we cannot predict the effects they will have on
our business.

21

 
 
 
 
 
 
 
The federal False Claims Act imposes liability on any person that, among other things, knowingly presents, or causes to be presented, a
false  or  fraudulent  claim  for  payment  by  a  federal  healthcare  program.  The  qui  tam  provisions  of  the  False  Claims Act  allow  a  private
individual to bring civil actions on behalf of the federal government alleging that the defendant has submitted a false claim, or has caused
such a claim to be submitted, to the federal government, and to share in any monetary recovery. There are many potential bases for liability
under the False Claims Act. Liability arises, primarily, when a person knowingly submits, or causes another to submit, a false claim for
reimbursement to the federal government. The False Claims Act has been used to assert liability on the basis of inadequate care, kickbacks,
and other improper referrals, and allegations as to misrepresentations with respect to the services rendered. Qui tam actions have increased
significantly  in  recent  years,  causing  greater  numbers  of  healthcare  companies,  including  medical  device  manufacturers,  to  defend  false
claim  actions,  pay  damages  and  penalties,  or  be  excluded  from  participation  in  Medicare,  Medicaid  or  other  federal  or  state  healthcare
programs  as  a  result  of  investigations  arising  out  of  such  actions.  In  addition,  various  states  have  enacted  similar  laws  analogous  to  the
False Claims Act. Many of these state laws apply where a claim is submitted to any third-party payor and not merely a federal healthcare
program. We are unable to predict whether we would be subject to actions under the False Claims Act or a similar state law, or the impact
of  such  actions.  However,  the  cost  of  defending  such  claims,  as  well  as  any  sanctions  imposed,  could  adversely  affect  our  financial
performance.  The  Health  Insurance  Portability  and  Accountability  Act  of  1996,  or  HIPAA,  also  created  several  new  federal  crimes,
including healthcare fraud and false statements relating to healthcare matters. The healthcare fraud statute prohibits knowingly and willfully
executing a scheme to defraud any healthcare benefit program, including private third-party payors. The false statements statute prohibits
knowingly  and  willfully  falsifying,  concealing,  or  covering  up  a  material  fact  or  making  any  materially  false,  fictitious,  or  fraudulent
statement in connection with the delivery of or payment for healthcare benefits, items, or services.

In addition, we may be subject to, or our marketing or research activities may be limited by, data privacy and security regulation by both
the federal government and the states in which we conduct our business. For example, HIPAA and its implementing regulations established
uniform  federal  standards  for  certain  “covered  entities”  (healthcare  providers,  health  plans  and  healthcare  clearinghouses)  governing  the
conduct of certain electronic healthcare transactions and protecting the security and privacy of protected health information. The American
Recovery and Reinvestment Act of 2009, commonly referred to as the economic stimulus package, included expansion of HIPAA’s privacy
and  security  standards  called  the  Health  Information  Technology  for  Economic  and  Clinical  Health  Act,  or  HITECH,  which  became
effective  on  February  17,  2010.  Among  other  things,  HITECH  makes  HIPAA’s  privacy  and  security  standards  directly  applicable  to
“business  associates”—independent  contractors  or  agents  of  covered  entities  that  create,  receive,  maintain,  or  transmit  protected  health
information  in  connection  with  providing  a  service  for  or  on  behalf  of  a  covered  entity.  HITECH  also  increased  the  civil  and  criminal
penalties  that  may  be  imposed  against  covered  entities,  business  associates  and  possibly  other  persons,  and  gave  state  attorneys  general
new authority to file civil actions for damages or injunctions in federal courts to enforce the federal HIPAA laws and seek attorney’s fees
and costs associated with pursuing federal civil actions. These laws also require the reporting of breaches of protected health information to
affected  individuals,  regulators  and  in  some  cases,  local  or  national  media.  HIPAA  and  HITECH  impose  strict  limits  on  our  physician
collaborators’ ability to use and disclose patient information on our behalf.

There are also an increasing number of state “sunshine” laws that require manufacturers to provide reports to state governments on pricing
and  marketing  information.  Several  states  have  enacted  legislation  requiring  medical  device  companies  to,  among  other  things,  establish
marketing compliance programs, file periodic reports with the state, make periodic public disclosures on sales and marketing activities, and
to prohibit or limit certain other sales and marketing practices. In addition, a federal law known as the Physician Payments Sunshine Act,
now  requires  medical  device  manufacturers  to  track  and  report  to  the  federal  government  certain  payments  and  other  transfers  of  value
made to physicians and teaching hospitals and ownership or investment interests held by physicians and their immediate family members.
The first reporting period covered only payments or transfers of value made and ownership or investment interests held by physicians and
their immediate family members from August 1, 2013 to December 31, 2013. The federal government disclosed the reported information
on a publicly available website beginning in September 2014. For calendar year 2014, the Physician Payments Sunshine Act will require
medical device manufacturers to report payments and transfers of values made and ownership or investment interests held by physicians
and their immediate family members for the full calendar year. These laws may adversely affect our sales, marketing, and other activities
by imposing administrative and compliance burdens on us. If we fail to track and report as required by these laws or to otherwise comply
with these laws, we could be subject to the penalty provisions of the pertinent state and federal authorities.

22

 
 
 
 
 
Clinical  research  is  heavily  regulated  by  FDA  regulations  for  the  protection  of  human  subjects  (21  C.F.R.  50  and  56)  and  also  the
regulations  of  the  U.S  Department  of  Health  and  Human  Services,  or  the  Common  Rule  (45  C.F.R  46).  Both  FDA  human  subject
regulations and the Common Rule impose restrictions on the involvement of human subjects in clinical research and require, among other
things, the balancing of the risks and benefits of research, the documented informed consent of research participants, initial and ongoing
review  of  research  by  an  IRB.  Similar  regulations  govern  research  conducted  in  foreign  countries.  Compliance  with  human  subject
protection regulations is costly and time consuming. Failure to comply could substantially and adversely impact our research program and
the development of our products.

Because of the breadth of these laws and the narrowness of available statutory and regulatory exemptions, it is possible that some of our
business activities could be subject to challenge under one or more of such laws. If our operations are found to be in violation of any of the
federal and state laws described above or any other governmental regulations that apply to us, we may be subject to penalties, including
criminal  and  significant  civil  monetary  penalties,  damages,  fines,  imprisonment,  exclusion  from  participation  in  government  healthcare
programs, injunctions, recall or seizure of products, total or partial suspension of production, denial or withdrawal of pre-marketing product
clearances and approvals, private “qui tam” actions brought by individual whistleblowers in the name of the government or refusal to allow
us to enter into supply contracts, including government contracts, and the curtailment or restructuring of our operations. Public disclosure
of privacy and data security violations could cause significant reputational harm. Any of these events could adversely affect our ability to
operate our business and our results of operations. To the extent that any of our products are sold in a foreign country, we may be subject to
similar  foreign  laws  and  regulations,  which  may  include,  for  instance,  applicable  post-marketing  requirements,  including  safety
surveillance,  anti-fraud  and  abuse  laws,  implementation  of  corporate  compliance  programs,  as  well  as  laws  and  regulations  requiring
transparency  of  pricing  and  marketing  information  and  governing  the  privacy  and  security  of  health  information,  such  as  the  E.U.’s
Directive 95/46 on the Protection of Individuals with regard to the Processing of Personal Data, or the Data Directive, and the wide variety
of national laws implementing the Data Directive.

Healthcare Reform

The regulations we are subject to may change as result of legislative and regulatory healthcare reform.

Significant healthcare reform was enacted in 2010 when the Patient Protection and Affordable Care Act or the PPACA, was signed into
law.  State  laws  also  were  enacted  to  implement  the  PPACA.  While  a  primary  goal  of  these  healthcare  reform  efforts  was  to  expand
coverage  to  more  individuals,  it  also  involved  increased  government  price  controls,  additional  regulatory  mandates  and  other  measures
designed to constrain medical costs. The PPACA significantly impacts the medical device industry. Among other things, the PPACA:

● imposes an  annual  excise  tax  of  2.3%  on  any  entity  that  manufactures  or  imports  medical  devices  offered  for  sale  in  the  United
States, which began on January 1, 2013, but was suspended during 2016 and 2017 and has been suspended for 2018 and 2019;

● establishes a  new  Patient-Centered  Outcomes  Research  Institute  to  oversee  and  identify  priorities  in  comparative  clinical

effectiveness research in an effort to coordinate and develop such research; and

● implements payment system reforms including a national pilot program on payment bundling to encourage hospitals, physicians and

other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models.

23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition, other legislative changes have been proposed and adopted since the PPACA was enacted. For example, on January 2, 2013,
former  President  Obama  signed  into  law  the American  Taxpayer  Relief Act  of  2012,  or  the ATRA,  which,  among  other  things,  further
reduced Medicare payments to several providers, including hospitals, imaging centers and cancer treatment centers and increased the statute
of  limitations  period  for  the  government  to  recover  overpayments  to  providers  from  three  to  five  years.  Moreover,  certain  legislative
changes  to  and  regulatory  changes  under  the  PPACA  have  occurred  in  the  115th  United  States  Congress  and  under  the  Trump
Administration.  For  example,  on  December  22,  2017,  President  Trump  signed  a  budget  reconciliation  act  into  law,  which  among  other
things, repealed the penalty for individuals who do not maintain minimum essential coverage, which was a central component of PPACA’s
approach  to  expanding  coverage.  On  January  9,  2018,  President  Trump  signed  the  Bipartisan  Budget Act  of  2018,  which,  among  other
things, repealed the PPACA provision establishing an independent payment advisory board that would have submitted recommendations to
reduce Medicare spending if projected Medicare spending exceeded a specified growth rate.

Additional  legislative  changes  to  and  regulatory  changes  under  the  PPACA  remain  possible.  We  expect  that  other  state  and  federal
healthcare  reform  measures  will  be  adopted  in  the  future,  any  of  which  could  reduce  the  number  of  patients  with  coverage  or  limit  the
amounts that federal and state governments will pay for healthcare products and services, which could result in reduced demand for our
products or additional pricing pressure.

Third-Party Reimbursement

Because we and our customers typically receive payment directly from hospitals and surgical centers, we do not anticipate relying directly
on payment for any of our products from third-party payors, such as Medicare, Medicaid, private insurers, and managed care companies.
However, our business will be affected by policies administered by federal and state healthcare programs, such as Medicare and Medicaid,
as  well  as  private  third-party  payors,  which  often  follow  the  policies  of  the  state  and  federal  healthcare  programs.  For  example,  our
business will be indirectly impacted by the ability of a hospital or medical facility to obtain coverage and third-party reimbursement for
procedures performed using our products. Many hospitals and clinics in the United States belong to group purchasing organizations (that
typically incentivize their hospital members to make a relatively large proportion of purchases from a limited number of vendors of similar
products  that  have  contracted  to  offer  discounted  prices).  Such  contracts  often  include  exceptions  for  purchasing  certain  innovative  new
technologies,  however. Accordingly,  the  commercial  success  of  our  products  may  also  depend  to  some  extent  on  our  ability  to  either
negotiate favorable purchase contracts with key group purchasing organizations or persuade hospitals and clinics to purchase our product
“off contract.” These third-party payors may deny reimbursement if they determine that a device used in a procedure was not medically
necessary; was not used in accordance with cost-effective treatment methods, as determined by the third-party payor; or was used for an
unapproved use. A national or local coverage decision denying Medicare coverage for one or more of our products could result in private
insurers  and  other  third  party  payors  also  denying  coverage.  Even  if  favorable  coverage  and  reimbursement  status  is  attained  for  our
products, less favorable coverage policies and reimbursement rates may be implemented in the future. The cost containment measures that
third-party payors and providers are instituting, both within the United States and abroad, could significantly reduce our potential revenues
from the sale of our products and any product candidates. We cannot provide any assurances that we will be able to obtain and maintain
third party coverage or adequate reimbursement for our products and product candidates in whole or in part.

For inpatient and outpatient procedures, including those that will involve use of our products, Medicare and many other third-party payors
in the United States reimburse hospitals at a prospectively determined amount. This amount is generally based on one or more diagnosis
related  groups,  or  DRGs,  associated  with  the  patient’s  condition  for  inpatient  treatment  and  generally  based  on  ambulatory  payment
classifications,  or APCs,  associated  with  the  procedures  performed  as  an  outpatient  at  an  ambulation  surgicenter.  Each  DRG  or APC  is
associated with a level of payment and may be adjusted from time to time, usually annually. Prospective payments are intended to cover
most  of  the  non-physician  hospital  costs  incurred  in  connection  with  the  applicable  diagnosis  and  related  procedures.  Implant  products,
such  as  those  we  plan  to  sell,  represent  part  of  the  total  procedure  costs  while  labor,  hospital  room  and  board,  and  other  supplies  and
services  represent  the  balance  of  those  costs.  However,  the  prospective  payment  amounts  are  typically  set  independently  of  a  particular
hospital’s actual costs associated with treating a particular patient and implanting a device. Therefore, the payment that a hospital would
receive for a particular hospital visit would not typically take into account the cost of our products.

24

 
 
 
 
 
 
 
Medicare has established a number of DRGs for inpatient procedures that involve the use of products similar to ours. Although Medicare
has  authority  to  create  special  DRGs  for  hospital  services  that  more  properly  reflect  the  actual  costs  of  expensive  or  new-technology
devices implanted as part of a procedure, it has declined to do so in the past, and we do not expect that it will do so with respect to our
current products and product candidates. Medicare’s DRG and APC classifications may have implications outside of Medicare, as many
other U.S. third-party payors often use Medicare DRGs and APCs for purposes of determining reimbursement.

We  believe  that  orthopedic  implants  generally  have  been  well  received  by  third-party  payors  because  of  the  ability  of  these  implants  to
greatly reduce long-term healthcare costs for patients with degenerative joint disease. However, coverage and reimbursement policies vary
from payor to payor and are subject to change. As discussed above, hospitals that purchase medical devices for treatment of their patients
generally  rely  on  third-party  payors  to  reimburse  all  or  part  of  the  costs  and  fees  associated  with  the  procedures  performed  with  these
devices.  Both  government  and  private  third-party  coverage  and  reimbursement  levels  are  critical  to  new  product  acceptance.  Neither
hospitals nor surgeons are likely to use our products if they do not receive reimbursement for the procedures adequate to cover the cost of
our products.

While it is expected that hospitals will be able to obtain coverage for procedures using our products, the level of payment available to them
for  such  procedures  may  change  over  time.  State  and  federal  healthcare  programs,  such  as  Medicare  and  Medicaid,  closely  regulate
provider payment levels and have sought to contain, and sometimes reduce, payment levels. Commercial insurers and managed care plans
frequently follow government payment policies and are likewise interested in controlling increases in the cost of medical care. These third-
party payors may deny payment if they determine that a procedure was not medically necessary, a device used in a procedure was not used
in accordance with cost-effective treatment methods, as determined by the third-party payor, or was used for an unapproved use.

In  addition,  some  payors  are  adopting  pay-for-performance  programs  that  differentiate  payments  to  healthcare  providers  based  on  the
achievement  of  documented  quality-of-care  metrics,  cost  efficiencies,  or  patient  outcomes.  These  programs  are  intended  to  provide
incentives to providers to find ways to deliver the same or better results while consuming fewer resources. As a result of these programs,
and  related  payor  efforts  to  reduce  payment  levels,  hospitals  and  other  providers  are  seeking  ways  to  reduce  their  costs,  including  the
amounts they pay to medical device suppliers. Adverse changes in payment rates by payors to hospitals could adversely impact our ability
to market and sell our products and negatively affect our financial performance.

In  international  markets,  healthcare  payment  systems  vary  significantly  by  country  and  many  countries  have  instituted  price  ceilings  on
specific  product  lines.  There  can  be  no  assurance  that  our  products  will  be  considered  cost-effective  by  third-party  payors,  that
reimbursement will be available or, if available, that the third-party payors’ reimbursement policies will not adversely affect our ability to
sell our products profitably.

Member countries of the European Union offer various combinations of centrally financed healthcare systems and private health insurance
systems. The relative importance of government and private systems varies from country to country. Governments may influence the price
of medical devices through their pricing and reimbursement rules and control of national healthcare systems that fund a large part of the
cost of those products to consumers. Some jurisdictions operate positive and negative list systems under which products may be marketed
only once a reimbursement price has been agreed upon. Some of these countries may require, as condition of obtaining reimbursement or
pricing approval, the completion of clinical trials that compare the cost-effectiveness of a particular product candidate to currently available
therapies.  Some  E.U.  member  states  allow  companies  to  fix  their  own  prices  for  devices  but  monitor  and  control  company  profits.  The
choice of devices is subject to constraints imposed by the availability of funds within the purchasing institution. Medical devices are most
commonly sold to hospitals or healthcare facilities at a price set by negotiation between the buyer and the seller. A contract to purchase
products  may  result  from  an  individual  initiative  or  as  a  result  of  a  competitive  bidding  process.  In  either  case,  the  purchaser  pays  the
supplier, and payment terms vary widely throughout the European Union. Failure to obtain favorable negotiated prices with hospitals or
healthcare facilities could adversely affect sales of our products.

25

 
 
 
 
 
 
 
 
Employees

As  of  February  28,  2019,  we  had  19  employees.  We  believe  that  our  success  will  depend,  in  part,  on  our  ability  to  attract  and  retain
qualified personnel. We have never experienced a work stoppage due to labor difficulties and believe that our relations with our employees
are good. None of our employees are represented by labor unions.

ITEM 1A. RISK FACTORS

In addition to the other information contained in this Annual Report, the following risk factors should be considered carefully in evaluating
our company. Our business, financial condition, liquidity or results of operations could be materially adversely affected by any of these
risks.

Risks Related to Our Business and Strategy

We have incurred net losses since our inception and anticipate that we will continue to incur substantial net losses for the foreseeable
future. We may never achieve or sustain profitability.

We have incurred substantial net losses since our inception. For the years ended December 31, 2018 and 2017 we incurred a net loss of
$8.8  million  and  $9.3  million,  respectively,  and  used  cash  in  operations  of  $9.3  million  and  $4.7  million,  respectively.  We  have  an
accumulated deficit of $229.4 million at December 31, 2018. Our losses have resulted principally from costs incurred in connection with
our  sales  and  marketing  activities,  research  and  development  activities,  manufacturing  activities,  general  and  administrative  expenses
associated with our operations, impairments on intangible assets and property and equipment, interest expense, loss on extinguishment of
debt and offering costs. Even if we are successful in launching new products into the market, we expect to continue to incur substantial
losses  for  the  foreseeable  future  as  we  continue  to  manufacture  products  for  CTL  Medical  and  other  OEM  customers  and  research  and
develop and seek regulatory approvals for our product candidates.

26

 
 
 
 
 
 
 
 
 
If sales revenue from any of our products or product candidates that receive marketing clearance from the FDA or other regulatory body is
insufficient, if we are unable to develop and commercialize any of our product candidates, or if our product development is delayed, we
may never become profitable. Even if we do become profitable, we may be unable to sustain or increase our profitability on a quarterly or
annual basis.

Our success depends on our ability to successfully commercialize silicon nitride-based medical devices, which to date have experienced
only limited market acceptance.

We  believe  we  are  the  first  and  only  company  to  use  silicon  nitride  in  medical  applications.  To  date,  however,  we  have  had  limited
acceptance  of  our  silicon  nitride-based  products  and  our  product  revenue  has  been  derived  substantially  from  our  non-silicon  nitride
products. In order to succeed in our goal of becoming a leading biomaterial technology company utilizing silicon nitride, we must increase
market awareness of our silicon nitride interbody spinal fusion products in conjunction with CTL Medical, continue to develop our other
product candidates outside of spinal fusion applications, enhance our commercial infrastructure and commercialize our silicon nitride joint
replacement  components  and  other  products.  If  we  fail  in  any  of  these  endeavors  or  experience  delays  in  pursuing  them,  we  will  not
generate revenues as planned and will need to curtail operations or seek additional financing earlier than otherwise anticipated.

Our  current  products  and  our  future  products  may  not  be  accepted  by  hospitals  and  surgeons  and  may  not  become  commercially
successful.

With the sale of our spine business to CTL Medical we are now dependent on the efforts of CTL Medical to sell the spinal fusion products
that we manufacture and then sell to CTL Medical. If CTL Medical is not able to sell such products or is unable increase demand for such
products, then our revenues will substantially decline. Since obtaining regulatory clearance from the FDA for our first silicon nitride spinal
fusion products in 2008, we were not been able to obtain significant market share of the interbody spinal fusion market, and CTL Medical
may not obtain such market share in the future. Even if we receive regulatory clearances or approvals for our other product candidates in
development,  these  product  candidates  may  not  gain  market  acceptance  among  orthopedic  surgeons  and  the  medical  community.
Orthopedic surgeons may elect not to use our products for a variety of reasons, including:

● lack or perceived lack of evidence supporting the beneficial characteristics of our silicon nitride technology;

● limited long-term data on the use of silicon nitride in medical devices;

● lower than expected clinical benefits in comparison with other products;

● the perception by surgeons that there are insufficient advantages of our products relative to currently available products;

● hospitals may choose not to purchase our products;

● group purchasing  organizations  may  choose  not  to  contract  for  our  products,  thus  limiting  availability  of  our  products  to

hospital purchasers;

● the price of our products, which may be higher than products made of the other commonly used biomaterials in the interbody

spinal fusion market and total joint market;

● lack of  coverage  or  adequate  payment  from  managed  care  plans  and  other  third-party  payers  for  the  procedures  that  use  our

products;

● Medicare, Medicaid or other third-party payers may limit or not permit reimbursement for procedures using our products;

27

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● ineffective marketing and distribution support;

● the time  and  resources  that  may  be  required  for  training,  or  the  inadequate  training,  of  surgeons  in  the  proper  use  of  our

products;

● the development of alternative biomaterials and products that render our products less competitive or obsolete; and

● the development of or improvement of competitive products.

If surgeons do not perceive silicon nitride products and product candidates as superior alternatives to competing products, we will not
be able to generate significant revenues, if any.

Even  if  surgeons  are  convinced  of  the  superior  characteristics  of  our  silicon  nitride  products  and  our  product  candidates  that  we
successfully introduce compared to the limitations of the current commonly used biomaterials, surgeons may find other methods or turn to
other  biomaterials  besides  silicon  nitride  to  overcome  such  limitations.  For  instance,  with  respect  to  interbody  spinal  fusion  products,
surgeons  or  device  manufacturers  may  use  more  effective  markers  for  enhancing  the  imaging  compatibility  of  PEEK  devices,  more
effective antibiotics to prevent or treat implant-related infections, and more effective osteoconductive and osteoinductive materials when
implanting an interbody spinal fusion device. Device manufacturers may also coat metal with existing traditional ceramics to reduce the
risk  of  metal  wear  particles  and  corrosion  in  total  joint  replacement  implants. Additionally,  surgeons  may  increase  their  use  of  metal
interbody  spinal  fusion  devices  if  there  is  an  increasing  perception  that  PEEK  devices  are  limited  by  their  strength  and  resistance  to
fracture.

The  orthopedic  market  is  highly  competitive,  and  we  may  not  be  able  to  compete  effectively  against  the  larger,  well-established
companies that dominate this market or emerging and small innovative companies that may seek to obtain or increase their share of the
market.

The markets for spinal fusions and total hip and knee implant products are intensely competitive, and many of our competitors are much
larger and have substantially more financial and human resources than we do. Many have long histories and strong reputations within the
industry,  and  a  relatively  small  number  of  companies  dominate  these  markets.  Medtronic,  Inc.;  DePuy  Synthes  Companies,  a  group  of
Johnson  &  Johnson  companies;  Stryker  Corporation;  Biomet,  Inc.;  Zimmer  Holdings,  Inc.;  and  Smith  &  Nephew  plc,  account  for  a
significant amount of orthopedic sales worldwide.

These companies enjoy significant competitive advantages over us, including:

● broad product offerings, which address the needs of orthopedic surgeons and hospitals in a wide range of procedures;

● products that are supported by long-term clinical data;

● greater experience in, and resources for, launching, marketing, distributing and selling products, including strong sales forces

and established distribution networks;

● existing relationships with orthopedic surgeons;

● extensive intellectual property portfolios and greater resources for patent protection;

● greater financial and other resources for product research and development;

● greater experience in obtaining and maintaining FDA and other regulatory clearances and approvals for products and product

enhancements;

28

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● established manufacturing operations and contract manufacturing relationships;

● significantly greater name recognition and widely recognized trademarks; and

● established relationships with healthcare providers and payers.

Our products and any product candidates that we may introduce into the market may not enable us to overcome the competitive advantages
of  these  large  and  dominant  orthopedic  companies.  In  addition,  even  if  we  successfully  introduce  additional  product  candidates
incorporating our silicon nitride biomaterial into the market, emerging and small innovative companies may seek to increase their market
share  and  they  may  eventually  possess  competitive  advantages,  which  could  adversely  impact  our  business.  Our  competitors  may  also
employ pricing strategies that could adversely affect the pricing of our products and pricing in the spinal fusion and total joint replacement
market generally.

Moreover,  many  other  companies  are  seeking  to  develop  new  biomaterials  and  products  which  may  compete  effectively  against  our
products  in  terms  of  performance  and  price.  For  example,  Smith  &  Nephew  has  developed  a  ceramic-coated  metal,  known  as  Oxinium,
which may overcome certain of the limitations of metal joint replacement products and could directly compete with our silicon nitride and
silicon nitride-coated product candidates.

We  are  entirely  dependent  on  CTL  Medical’s  ability  to  sell  the  spinal  fusion  products  we  manufacture  from  silicon  nitride.  If  CTL
Medical is not able to sell such products or increase demand for the products our revenues will be substantially impacted which would
have a significant impact on our business and operating results.

Sales of spinal fusion products manufactured from silicon nitride to CTL Medical accounts for all of our revenues from the sale of products.
We have entered into a 10-year manufacturing and supply agreement with CTL Medical to supply CTL Medical with its requirements of
silicon  nitride  manufactured  spinal  fusion  products.  CTL  Medical  is  not  under  any  obligation  to  purchase  any  minimum  quantities  of
products  from  us.  If  CTL  Medical  is  not  successful  in  creating  demand  for  such  products  and  selling  such  products,  then  they  are  not
required to purchase any products from us. Because of our significant customer concentration, our revenue could fluctuate significantly due
to changes in economic conditions, the use of competitive products, or the loss of, reduction of business with, CTL Medical. A reduction or
delay in orders from CTL Medical, or a delay or default in payment by any significant customer, could materially harm our business and
results of operations.

The  manufacturing  process  for  our  silicon  nitride  products  is  complex  and  requires  sophisticated  state-of-the-art  equipment,
experienced manufacturing personnel and highly specialized knowledge. If we are unable to manufacture our silicon nitride products
on a timely basis consistent with our quality standards, our results of operation will be adversely impacted.

In order to control the quality, cost and availability of our silicon nitride products, we developed our own manufacturing capabilities. We
operate  a  30,000  square  foot  manufacturing  facility  which  is  certified  under  the  ISO  13485  medical  device  manufacturing  standard  for
medical devices and operates under the FDA’s quality systems regulations, or QSRs. All operations with the exceptions of raw material
production, cleaning, packaging and sterilization are performed at this facility.

29

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In order to mitigate the risk associated with us being the sole manufacturer of our silicon nitride medical device products, in June 2014, we
entered into a manufacturing development and supply agreement with Kyocera Industrial Ceramics Corporation, or Kyocera. We updated
our material master file and submitted a 510(k) with the FDA in the third quarter of 2014 to qualify Kyocera as a second source supplier of
our silicon nitride products. Kyocera has been qualified as a second source supplier of our silicon nitride products. Although we expect this
arrangement with Kyocera to continue, if Kyocera ceases to continue as a qualified manufacturer of these products and product candidates,
we will be the sole manufacturer of these products and will need to seek other potential secondary manufacturers. Our reliance solely on
our  internal  resources  to  manufacture  our  silicon  nitride  products  entails  risks  to  which  we  would  not  be  subject  if  we  had  secondary
suppliers for their manufacture, including:

● the inability to meet our product specifications and quality requirements consistently;

● a delay or inability to procure or expand sufficient manufacturing capacity to meet additional demand for our products;

● manufacturing and product quality issues related to the scale-up of manufacturing;

● the inability to produce a sufficient supply of our products to meet product demands;

● the disruption of our manufacturing facility due to equipment failure, natural disaster or failure to retain key personnel; and

● our inability to ensure our compliance with regulations and standards of the FDA, including QSRs, and corresponding state and

international regulatory authorities, including the CFDA.

Any of these events could lead to a reduction in our product sales, product launch delays, failure to obtain regulatory clearance or approval
or impact our ability to successfully sell our products and commercialize our products candidates.

We  depend  on  a  limited  number  of  third-party  suppliers  for  key  raw  materials  used  in  the  manufacturing  of  our  silicon  nitride
products, and the loss of these third-party suppliers or their inability to supply us with adequate raw materials could harm our business.

We rely on a limited number of third-party suppliers for the raw materials required for the production of our silicon nitride products and
product  candidates.  Our  dependence  on  a  limited  number  of  third-party  suppliers  involves  several  risks,  including  limited  control  over
pricing, availability, quality, and delivery schedules for raw materials. We have no supply agreements in place with any of our suppliers and
cannot be certain that our current suppliers will continue to provide us with the quantities of raw materials that we require or that satisfy our
anticipated  specifications  and  quality  requirements. Any  supply  interruption  in  limited  or  single  sourced  raw  materials  could  materially
harm our ability to manufacture our products until a new source of supply, if any, could be identified and qualified. We may be unable to
find a sufficient alternative supply channel within a reasonable time or on commercially reasonable terms. Any performance failure on the
part  of  our  suppliers  could  delay  the  production  of  our  silicon  nitride  products  and  product  candidates  and  delay  the  development  and
commercialization  of  our  product  candidates,  including  limiting  supplies  necessary  for  commercial  sale,  clinical  trials  and  regulatory
approvals, which could have a material adverse effect on our business.

In order to be successful, we must expand our available product lines of silicon nitride-based medical devices by commercializing new
product candidates, but we may not be able to do so in a timely fashion and at expected costs, or at all.

Although we are currently manufacturing silicon nitride interbody spinal fusion implants for CTL Medical, in order to be successful, we
will  need  to  expand  our  product  lines  to  include  other  silicon  nitride  devices.  Therefore,  we  are  developing  silicon  nitride  product
candidates for total hip and knee replacement procedures, dental implants and are exploring the application of our silicon nitride technology
for other potential applications. However, we have yet to commercialize any silicon nitride products beyond our spinal fusion products. To
succeed in our commercialization efforts, we must effectively continue product development and testing, find new strategic partners, obtain
regulatory clearances and approvals, and enhance our sales and marketing capabilities. Because of these uncertainties, there is no assurance
that we will succeed in bringing any of our current or future product candidates to market. If we fail in bringing our product candidates to
market, or experience delays in doing so, we will not generate revenues as planned and will need to curtail operations or seek additional
financing earlier than otherwise anticipated.

30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We will depend on one or more strategic partners to develop and commercialize our total joint replacement and dental implant product
candidates,  and  if  our  strategic  partners  are  unable  to  execute  effectively  on  our  agreements  with  them,  we  may  never  become
profitable.

We are seeking a strategic partner to develop and commercialize our total joint replacement and dental implant product candidates. We will
be reliant on our strategic partners to develop and commercialize a total hip or knee joint replacement product candidate that utilizes silicon
nitride-coated components, although we have not yet entered into an agreement with any strategic partner to develop products with these
silicon nitride-coated components and may be unable to do so on agreeable terms. In order to succeed in our joint commercialization efforts,
we and any future partners must execute effectively on all elements of a combined business plan, including continuing to establish sales and
marketing capabilities, manage certified, validated and effective commercial-scale manufacturing operations, conduct product development
and testing, and obtain regulatory clearances and approvals for our product candidate. If we or any of our strategic partners fail in any of
these  endeavors,  or  experience  delays  in  pursuing  them,  we  will  not  generate  revenues  as  planned  and  will  need  to  curtail  operations  or
seek additional financing earlier than otherwise anticipated.

Part of our strategy is to establish and develop OEM partnerships and arrangements, which subjects us to various risks.

Because we believe silicon nitride is a superior platform and technology for application in the spine, total joint and other markets, we are
establishing OEM partnerships with other companies to replace their materials and products with silicon nitride. Sales of products to OEM
customers will expose our business to a number of risks. Sales through OEM partners could be less profitable than direct sales. Sales of our
products through multiple channels could also confuse customers and cause the sale of our products to decline. In addition, OEM customers
will  require  that  products  meet  strict  standards.  Our  compliance  with  these  requirements  could  result  in  increased  development,
manufacturing, warranty and administrative costs. A significant increase in these costs could adversely affect our operating results. If we
fail to meet OEM specifications on a timely basis, our relationships with our OEM partners may be harmed. Furthermore, we would not
control  our  OEM  partners,  and  they  could  sell  competing  products,  may  not  incorporate  our  technology  into  their  products  in  a  timely
manner and may devote insufficient sales efforts to the OEM products.

If hospitals and other healthcare providers are unable to obtain coverage or adequate reimbursement for procedures performed with
our products, it is unlikely our products will be widely used.

In the United States, the commercial success of our products will depend, in part, on the extent to which governmental payers at the federal
and state levels, including Medicare and Medicaid, private health insurers and other third-party payers provide coverage for and establish
adequate reimbursement levels for procedures utilizing our products. Because we typically receive payment directly from the companies
for  whom  we  manufacture,  such  as  CTL  Medical,  we  do  not  anticipate  relying  directly  on  payment  from  third-party  payers  for  our
products. However, hospitals and other healthcare providers that purchase orthopedic products manufactured by us from our customers for
treatment of their patients generally rely on third-party payers to pay for all or part of the costs and fees associated with our products as part
of  a  “bundled”  rate  for  the  associated  procedures.  The  existence  of  coverage  and  adequate  reimbursement  for  our  products  and  the
procedures  performed  with  them  by  government  and  private  payers  is  critical  to  market  acceptance  of  our  existing  and  future  products.
Neither hospitals nor surgeons are likely to use our products if they do not receive adequate reimbursement for the procedures utilizing our
products.

Many  private  payers  currently  base  their  reimbursement  policies  on  the  coverage  decisions  and  payment  amounts  determined  by  the
Centers for Medicare and Medicaid Services, or CMS, which administers the Medicare program. Others may adopt different coverage or
reimbursement  policies  for  procedures  performed  with  our  products,  while  some  governmental  programs,  such  as  Medicaid,  have
reimbursement  policies  that  vary  from  state  to  state,  some  of  which  may  not  pay  for  the  procedures  performed  with  our  products  in  an
adequate amount, if at all. A Medicare national or local coverage decision denying coverage for one or more of our products could result in
private  and  other  third-party  payers  also  denying  coverage  for  our  products.  Third-party  payers  also  may  deny  reimbursement  for  our
products if they determine that a product used in a procedure was not medically necessary, was not used in accordance with cost-effective
treatment methods, as determined by the third-party payer, or was used for an unapproved use. Unfavorable coverage or reimbursement
decisions  by  government  programs  or  private  payers  underscore  the  uncertainty  that  our  products  face  in  the  market  and  could  have  a
material adverse effect on our business.

Many  hospitals  and  clinics  in  the  United  States  belong  to  group  purchasing  organizations,  which  typically  incentivize  their  hospital
members to make a relatively large proportion of purchases from a limited number of vendors of similar products that have contracted to
offer discounted prices. Such contracts often include exceptions for purchasing certain innovative new technologies, however. Accordingly,
the commercial success of our products may also depend to some extent on our ability to either negotiate favorable purchase contracts with
key group purchasing organizations and/or persuade hospitals and clinics to purchase our product “off contract.”

31

 
 
 
 
 
 
 
 
 
 
The  healthcare  industry  in  the  United  States  has  experienced  a  trend  toward  cost  containment  as  government  and  private  payers  seek  to
control  healthcare  costs  by  paying  service  providers  lower  rates.  While  it  is  expected  that  hospitals  will  be  able  to  obtain  coverage  for
procedures  using  our  products,  the  level  of  payment  available  to  them  for  such  procedures  may  change  over  time.  State  and  federal
healthcare programs, such as Medicare and Medicaid, closely regulate provider payment levels and have sought to contain, and sometimes
reduce, payment levels. Private payers frequently follow government payment policies and are likewise interested in controlling increases in
the  cost  of  medical  care.  In  addition,  some  payers  are  adopting  pay-for-performance  programs  that  differentiate  payments  to  healthcare
providers  based  on  the  achievement  of  documented  quality-of-care  metrics,  cost  efficiencies,  or  patient  outcomes.  These  programs  are
intended  to  provide  incentives  to  providers  to  deliver  the  same  or  better  results  while  consuming  fewer  resources. As  a  result  of  these
programs, and related payer efforts to reduce payment levels, hospitals and other providers are seeking ways to reduce their costs, including
the amounts they pay to medical device manufacturers. We may not be able to sell our implants profitably if third-party payers deny or
discontinue coverage or reduce their levels of payment below that which we project, or if our production costs increase at a greater rate than
payment levels. Adverse changes in payment rates by payers to hospitals could adversely impact our ability to market and sell our products
and negatively affect our financial performance.

In  international  markets,  medical  device  regulatory  requirements  and  healthcare  payment  systems  vary  significantly  from  country  to
country,  and  many  countries  have  instituted  price  ceilings  on  specific  product  lines.  We  cannot  assure  you  that  our  products  will  be
considered  cost-effective  by  international  third-party  payers,  that  reimbursement  will  be  available  or,  if  available,  that  the  third-party
payers’  reimbursement  policies  will  not  adversely  affect  our  ability  to  sell  our  products  profitably. Any  failure  to  receive  regulatory  or
reimbursement approvals would negatively impact market acceptance of our products in any international markets in which those approvals
are sought.

Moreover, certain legislative changes to and regulatory changes under the PPACA have occurred in the 115th United States Congress and
under the Trump Administration. For example, on December 22, 2017, President Trump signed a budget reconciliation act into law, which
among other things, repealed the penalty for individuals who do not maintain minimum essential coverage, which was a central component
of  PPACA’s  approach  to  expanding  coverage.  On  January  9,  2018,  President  Trump  signed  the  Bipartisan  Budget Act  of  2018,  which,
among  other  things,  repealed  the  PPACA  provision  establishing  an  independent  payment  advisory  board  that  would  have  submitted
recommendations  to  reduce  Medicare  spending  if  projected  Medicare  spending  exceeded  a  specified  growth  rate  we  cannot  predict  the
ultimate  content,  timing  or  effect  of  any  changes  to  the  Health  Care  Reform Act  or  other  federal  and  state  reform  efforts.  There  is  no
assurance  that  federal  or  state  healthcare  reform  will  not  adversely  affect  our  business  and  financial  results,  and  we  cannot  predict  how
future federal or state legislative, judicial or administrative changes relating to healthcare reform will affect our business.

Prolonged  negative  economic  conditions  in  domestic  and  international  markets  may  adversely  affect  us,  our  suppliers,  partners  and
consumers, and the global orthopedic market which could harm our financial position.

There is a risk that one or more of our current suppliers may not continue to operate. Any lender that is obligated to provide funding to us
under any future credit agreement with us may not be able to provide funding in a timely manner, or at all, when we require it. The cost of,
or lack of, available credit or equity financing could impact our ability to develop sufficient liquidity to maintain or grow our company.
These negative changes in domestic and international economic conditions or additional disruptions of either or both of the financial and
credit markets may also affect third-party payers and may have a material adverse effect on our business, results of operations, financial
condition and liquidity.

In addition, we believe that various demographics and industry-specific trends will help drive growth in the orthopedics markets, but these
demographics  and  trends  are  uncertain.  Actual  demand  for  orthopedic  products  generally,  and  our  products  in  particular,  could  be
significantly  less  than  expected  if  our  assumptions  regarding  these  factors  prove  to  be  incorrect  or  do  not  materialize,  or  if  alternative
treatments gain widespread acceptance.

32

 
 
 
 
 
 
 
 
We are dependent on our senior management team, engineering team, and surgeon advisors, and the loss of any of them could harm
our business. We may not have sufficient personnel to effectuate our business strategy due to our recent reduction in force.

The members of our current senior management team have worked together in their new positions with us for a limited time and may not be
able to successfully implement our strategy. In addition, we have not entered into employment agreements, other than change-in-control
severance agreements, with any of the members of our senior management team. There are no assurances that the services of any of these
individuals will be available to us for any specified period of time. The successful integration of our senior management team, the loss of
members of our senior management team, engineering team and key surgeon advisors, or our inability to attract or retain other qualified
personnel or advisors could have a material adverse effect on our business, financial condition and results of operations. We may not have
sufficient  number  of  qualified  personnel  to  effectuate  our  business  strategy  which  could  have  a  material  adverse  effect  on  our  business,
financial condition and results of operations.

If  we  experience  significant  disruptions  in  our  information  technology  systems,  our  business,  results  of  operations  and  financial
condition could be adversely affected.

The efficient operation of our business depends on our information technology systems. We rely on our information technology systems to
effectively  manage  our  sales  and  marketing,  accounting  and  financial  functions;  manufacturing  processes;  inventory;  engineering  and
product development functions; and our research and development functions. As such, our information technology systems are vulnerable
to  damage  or  interruption  including  from  earthquakes,  fires,  floods  and  other  natural  disasters;  terrorist  attacks  and  attacks  by  computer
viruses  or  hackers;  power  losses;  and  computer  systems,  or  Internet,  telecommunications  or  data  network  failures.  The  failure  of  our
information technology systems to perform as we anticipate or our failure to effectively implement new systems could disrupt our entire
operation and could result in decreased sales, increased overhead costs, excess inventory and product shortages, all of which could have a
material adverse effect on our reputation, business, results of operations and financial condition.

Risks Related to Our Capital Resources and Impairments

We  will  require  additional  financing  and  our  failure  to  obtain  additional  funding  would  force  us  to  delay,  reduce  or  eliminate  our
product development programs or commercialization efforts.

We currently have limited committed sources of capital and we have limited liquidity. Our cash and cash equivalents as of December 31,
2018 was $5.4 million. We require substantial future capital in order to continue to conduct the research and development and regulatory
clearance  and  approval  activities  necessary  to  bring  our  products  to  market,  to  establish  effective  marketing  and  sales  capabilities.  Our
existing  capital  resources  are  not  sufficient  to  enable  us  to  fund  the  completion  of  the  development  and  commercialization  of  all  of  our
product  candidates.  We  cannot  determine  with  certainty  the  duration  and  completion  costs  of  the  current  or  future  development  and
commercialization of our product candidates for spinal fusion, joint replacement and coated metals or if, when, or to what extent we will
generate revenues from the commercialization and sale of any of these product candidates for which we obtain regulatory approval. We
may never succeed in achieving regulatory approval for certain or all of these product candidates. The duration, costs and timing of clinical
trials  and  development  of  our  spinal  fusion,  joint  replacement  and  coated  metal  product  candidates  will  depend  on  a  variety  of  factors,
including:

● the scope,  rate  of  progress,  and  expense  of  our  ongoing,  as  well  as  any  additional,  clinical  trials  and  other  research  and

development activities;

● future clinical trial results we may must or choose to conduct;

● potential changes in government regulation; and

● the timing and receipt of any regulatory approvals.

33

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
A  change  in  the  outcome  of  any  of  these  variables  with  respect  to  the  development  of  spinal  fusion,  joint  replacement  or  coated  metal
product candidates could mean a significant change in the costs and timing associated with the development of these product candidates.

In  addition,  if  adequate  funds  to  develop  our  product  candidates  are  not  available  on  a  timely  basis,  we  may  terminate  or  delay  the
development of one or more of our product candidates, or delay activities necessary to commercialize our product candidates. Additional
funding may not be available to us on acceptable terms, or at all. Any additional equity financing, if available, may not  be  available  on
favorable terms and will most likely be dilutive to our current stockholders, and debt financing, if available, may involve more restrictive
covenants.  Our  ability  to  access  capital  when  needed  is  not  assured  and,  if  not  achieved  on  a  timely  basis,  will  materially  harm  our
business, financial condition and results of operations or could cause us to cease operations.

The timing and amount of our future capital requirements will depend on many factors, including:

● the level of sales of our current products and the cost of revenue and sales and marketing;

● the extent of any clinical trials that we will be required to conduct in support of the regulatory clearance of our total hip and knee

replacement product candidates;

● the scope, progress, results and cost of our product development efforts;

● the costs, timing and outcomes of regulatory reviews of our product candidates;

● the number and types of products we develop and commercialize;

● the costs  of  preparing,  filing  and  prosecuting  patent  applications  and  maintaining,  enforcing  and  defending  intellectual  property-

related claims; and

● the extent and scope of our general and administrative expenses.

Raising  additional  capital  by  issuing  securities  or  through  debt  financings  or  licensing  arrangements  may  cause  dilution  to  existing
stockholders, restrict our operations or require us to relinquish proprietary rights.

To  the  extent  that  we  raise  additional  capital  through  the  sale  of  equity  or  convertible  debt  securities,  your  ownership  interest  may  be
diluted,  and  the  terms  may  include  liquidation  or  other  preferences  that  adversely  affect  your  rights  as  a  stockholder.  Debt  financing,  if
available,  may  involve  agreements  that  include  covenants  limiting  or  restricting  our  ability  to  take  specific  actions  such  as  incurring
additional  debt,  making  capital  expenditures  or  declaring  dividends.  If  we  raise  additional  funds  through  collaboration  and  licensing
arrangements with third parties, we may have to relinquish valuable rights to our technologies or products or grant licenses on terms that
are not favorable to us. Any of these events could adversely affect our ability to achieve our product development and commercialization
goals and have a material adverse effect on our business, financial condition and results of operations.

Our independent registered public accounting firm has included an explanatory paragraph relating to our ability to continue as a going
concern in its report on our audited financial statements. We may be unable to continue to operate without the threat of liquidation for
the foreseeable future

Our  report  from  our  independent  registered  public  accounting  firm  for  the  year  ended  December  31,  2018  includes  an  explanatory
paragraph stating that our recurring losses from operations raises substantial doubt about our ability to continue as a going concern. If we
are unable to obtain sufficient additional funding, our business, prospects, financial condition and results of operations will be materially
and adversely affected, and we may be unable to continue as a going concern. If we are unable to continue as a going concern, we may have
to liquidate our assets and may receive less than the value at which those assets are carried on our consolidated financial statements, and it
is likely that investors will lose all or a part of their investment. Future reports from our independent registered public accounting firm may
also  contain  statements  expressing  doubt  about  our  ability  to  continue  as  a  going  concern.  If  we  seek  additional  financing  to  fund  our
business  activities  in  the  future  and  there  remains  doubt  about  our  ability  to  continue  as  a  going  concern,  investors  or  other  financing
sources may be unwilling to provide additional funding on commercially reasonable terms or at all.

34

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Risks Related to Regulatory Approval of Our Products and Other Government Regulations

Our long-term success depends substantially on our ability to obtain regulatory clearance or approval and thereafter commercialize our
product candidates; we cannot be certain that we will be able to do so in a timely manner or at all.

The  process  of  obtaining  regulatory  clearances  or  approvals  to  market  a  medical  device  from  the  FDA  or  similar  regulatory  authorities
outside  of  the  United  States  can  be  costly  and  time  consuming,  and  there  can  be  no  assurance  that  such  clearances  or  approvals  will  be
granted on a timely basis, or at all. The FDA’s 510(k) clearance process generally takes one to six months from the date of submission,
depending  on  whether  a  special  or  traditional  510(k)  premarket  notification  has  been  submitted,  but  can  take  significantly  longer. An
application for premarket approval, or PMA, must be submitted to the FDA if the device cannot be cleared through the 510(k) clearance
process or is not exempt from premarket review by the FDA. The PMA process almost always requires one or more clinical trials and can
take two to three years from the date of filing, or even longer. In some cases, including in the case of our interbody spinal fusion devices
which incorporate our CSC technology and our solid silicon nitride femoral head component, the FDA requires clinical data as part of the
510(k) clearance process.

It is possible that the FDA could raise questions about our spinal fusion products, our spinal fusion product candidates and our total hip and
knee joint replacement product candidates and could require us to perform additional studies on our products and product candidates. Even
if the FDA permits us to use the 510(k) clearance process, we cannot assure you that the FDA will not require either supporting data from
laboratory tests or studies that we have not conducted, or substantial supporting clinical data. If we are unable to use the 510(k) clearance
process  for  any  of  our  product  candidates,  are  required  to  provide  clinical  data  or  laboratory  data  that  we  do  not  possess  to  support  our
510(k) premarket notifications for any of these product candidates, or otherwise experience delays in obtaining or fail to obtain regulatory
clearances, the commercialization of our product candidates in the United States will be delayed or prevented, which will adversely affect
our ability to generate additional revenues. It also may result in the loss of potential competitive advantages that we might otherwise attain
by  bringing  our  products  to  market  earlier  than  our  competitors. Additionally,  although  the  FDA  allows  modifications  to  be  made  to
devices that have received 510(k) clearance with supporting documentation, the FDA may disagree with our decision to modify our cleared
devices  without  submission  of  a  new  510(k)  premarket  notification,  subjecting  us  to  potential  product  recall,  field  alerts  and  corrective
actions. Any of these contingencies could adversely affect our business.

Similar to our compliance with U.S. regulatory requirements, we must obtain and comply with international requirements, including those
of the CFDA, in order to market and sell our products outside of the United States and we may only promote and market our products, if
approved, as permitted by applicable regulatory authorities. There is no guarantee that we will receive the necessary regulatory approvals
for our product candidates either inside the United States or internationally, including approvals from the CFDA. If our product candidates
do not receive necessary regulatory approvals, our business could be materially and adversely affected.

 The safety of our products is not yet supported by long-term clinical data, and they may prove to be less safe and effective than our
laboratory data indicate.

We obtained FDA clearance for each of our spinal fusion products that we currently manufacture for CTL Medical, and we have sought and
intend to seek FDA clearance or approval through the FDA’s 510(k) or PMA process and, where applicable, CE marking for our product
candidates. The 510(k) clearance process is based on the FDA’s agreement that a new product candidate is substantially equivalent to an
already marketed product for which a PMA was not required. While most 510(k) premarket notifications do not require clinical data for
clearance, the FDA may request that such data be provided. Long-term clinical data or marketing experience obtained after clearance may
indicate that our products cause unexpected complications or other unforeseen negative effects. If this happens, we could be subject to the
withdrawal  of  our  marketing  clearance  and  other  enforcement  sanctions  by  the  FDA  or  other  regulatory  authority,  product  recalls,
significant  legal  liability,  significant  negative  publicity,  damage  to  our  reputation  and  a  dramatic  reduction  in  our  ability  to  sell  our
products, any one of which would have a material adverse effect on our business, financial condition and results of operations.

35

 
 
 
 
 
 
 
 
 
We  expect  to  be  required  to  conduct  clinical  trials  to  support  regulatory  approval  of  some  of  our  product  candidates.  We  have  little
experience  conducting  clinical  trials,  they  may  proceed  more  slowly  than  anticipated,  and  we  cannot  be  certain  that  our  product
candidates will be shown to be safe and effective for human use.

In order to commercialize our product candidates in the United States, we must submit a PMA for some of these product candidates, which
will require us to conduct clinical trials. We also plan to provide the FDA with clinical trial data to support some of our 510(k) premarket
notifications.  We  will  receive  approval  or  clearance  from  the  FDA  to  commercialize  products  requiring  a  clinical  trial  only  if  we  can
demonstrate to the satisfaction of the FDA, through well-designed and properly conducted clinical trials, that our product candidates are
safe and effective and otherwise meet the appropriate standards required for approval or clearance for specified indications.

Clinical trials are complex, expensive, time consuming, uncertain and subject to substantial and unanticipated delays. Before we may begin
clinical trials, we must submit and obtain approval for an investigational device exemption, or IDE, that describes, among other things, the
manufacture of, and controls for, the device and a complete investigational plan. Clinical trials generally involve a substantial number of
patients in a multi-year study. Because we do not have the experience or the infrastructure necessary to conduct clinical trials, we will have
to hire one or more contract research organizations, or CROs, to conduct trials on our behalf. CRO contract negotiations may be costly and
time consuming and we will rely heavily on the CRO to ensure that our trials are conducted in accordance with regulatory and industry
standards. We may encounter problems with our clinical trials and any of those problems could cause us or the FDA to suspend those trials
or delay the analysis of the data derived from them.

A number of events or factors, including any of the following, could delay the completion of our clinical trials in the future and negatively
impact our ability to obtain FDA approval for, and to introduce our product candidates:

● failure to obtain financing necessary to bear the cost of designing and conducting clinical trials;

● failure to obtain approval from the FDA or foreign regulatory authorities to commence investigational studies;

● conditions imposed on us by the FDA or foreign regulatory authorities regarding the scope or design of our clinical trials;

● failure to find a qualified CRO to conduct our clinical trials or to negotiate a CRO services agreement on favorable terms;

● delays in  obtaining  or  in  our  maintaining  required  approvals  from  institutional  review  boards  or  other  reviewing  entities  at

clinical sites selected for participation in our clinical trials;

● insufficient supply of our product candidates or other materials necessary to conduct our clinical trials;

● difficulties in enrolling patients in our clinical trials;

● negative or inconclusive results from clinical trials, or results that are inconsistent with earlier results, that necessitate additional

clinical studies;

● failure on the part of the CRO to conduct the clinical trial in accordance with regulatory requirements;

● our failure  to  maintain  a  successful  relationship  with  the  CRO  or  termination  of  our  contractual  relationship  with  the  CRO

before completion of the clinical trials;

● serious or unexpected side effects experienced by patients in whom our product candidates are implanted; or

● failure by any of our third-party contractors or investigators to comply with regulatory requirements or meet other contractual

obligations in a timely manner.

36

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our  clinical  trials  may  need  to  be  redesigned  or  may  not  be  completed  on  schedule,  if  at  all.  Delays  in  our  clinical  trials  may  result  in
increased  development  costs  for  our  product  candidates,  which  could  cause  our  stock  price  to  decline  and  limit  our  ability  to  obtain
additional  financing.  In  addition,  if  one  or  more  of  our  clinical  trials  are  delayed,  competitors  may  be  able  to  bring  products  to  market
before we do, and the commercial viability of our product candidates could be significantly reduced.

Our current and future relationships with third-party payers and current and potential customers in the United States and elsewhere
may  be  subject,  directly  or  indirectly,  to  applicable  anti-kickback,  fraud  and  abuse,  false  claims,  transparency,  health  information
privacy  and  security  and  other  healthcare  laws  and  regulations,  which  could  expose  us  to  criminal  sanctions,  civil  penalties,
contractual damages, reputational harm administrative burdens and diminished profits and future earnings.

Our  current  and  future  arrangements  with  third-party  payers  and  current  and  potential  customers,  including  providers  and  physicians,  as
well  as  physician  owned  distributorships  or  PODs,  may  expose  us  to  broadly  applicable  fraud  and  abuse  and  other  healthcare  laws  and
regulations,  including,  without  limitation,  the  federal Anti-Kickback  Statute  and  the  federal  False  Claims Act,  which  may  constrain  the
business  or  financial  arrangements  and  relationships  through  which  we  sell,  market  and  distribute  our  products.  In  addition,  we  may  be
subject  to  transparency  laws  and  patient  privacy  regulations  by  U.S.  federal  and  state  governments  and  by  governments  in  foreign
jurisdictions in which we conduct our business. The applicable federal, state and foreign healthcare laws and regulations that may affect our
ability to operate include:

● the federal  Anti-Kickback  Statute,  which  prohibits,  among  other  things,  persons  from  knowingly  and  willfully  soliciting,
offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward, or in return for,
either the referral of an individual for, or the purchase, order or recommendation of, any good or service, for which payment
may be made under federal healthcare programs, such as Medicare and Medicaid;

● federal civil  and  criminal  false  claims  laws  and  civil  monetary  penalty  laws,  including  the  federal  False  Claims Act,  which
impose criminal  and  civil  penalties,  including  civil  whistleblower  or  qui  tam  actions,  against  individuals  or  entities  for
knowingly presenting, or causing to be presented, to the federal government, including the Medicare and Medicaid programs,
claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an obligation to pay
money to the federal government;

● the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, which imposes criminal and civil liability
for executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters;

● HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009, or HITECH, and
their  respective implementing  regulations,  which  impose  obligations  on  covered  healthcare  providers,  health  plans,  and
healthcare clearinghouses, as well as their business associates that create, receive, maintain or transmit individually identifiable
health information for or on behalf of a covered entity, with respect to safeguarding the privacy, security and transmission of
individually identifiable health information;

● the Physician Payments Sunshine Act, which requires (i) manufacturers of drugs, devices, biologics and medical supplies for
which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program, with specific exceptions, to
report  annually  to  CMS  information  related  to  certain  “payments  or  other  transfers  of  value”  made  to  physicians, which  is
defined  to  include  doctors,  dentists,  optometrists,  podiatrists  and  chiropractors,  and  teaching  hospitals,  with  data collection
beginning on August 1, 2013, (ii) applicable manufacturers and applicable group purchasing organizations to report  annually to
CMS  ownership  and  investment  interests  held  in  such  entities  by  physicians  and  their  immediate  family  members, with  data
collection beginning on August 1, 2013, (iii) manufacturers to submit reports to CMS by March 31, 2014 and the 90th  day of
each subsequent calendar year, and (iv) disclosure of such information by CMS on a publicly available website beginning in
September 2014; and

37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● analogous state and foreign laws and regulations, such as state anti-kickback and false claims laws, which may apply to sales or
marketing arrangements and claims involving healthcare items or services reimbursed by non-governmental third-party payers,
including private  insurers;  state  and  foreign  laws  that  require  medical  device  companies  to  comply  with  the  medical  device
industry’s voluntary  compliance  guidelines  and  the  relevant  compliance  guidance  promulgated  by  the  federal  government  or
otherwise  restrict payments  that  may  be  made  to  healthcare  providers;  state  and  foreign  laws  that  require  medical  device
manufacturers  to  report information  related  to  payments  and  other  transfers  of  value  to  physicians  and  other  healthcare
providers  or  marketing  expenditures; and  state  and  foreign  laws  governing  the  privacy  and  security  of  health  information  in
certain circumstances, many of which differ from each other in significant ways and often are not preempted by HIPAA, thus
complicating compliance efforts. Efforts to ensure that our business arrangements with third parties will comply with applicable
healthcare laws and regulations may involve substantial costs. It is possible that governmental authorities will conclude that our
business practices may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse
or  other  healthcare  laws and  regulations.  If  our  operations  are  found  to  be  in  violation  of  any  of  these  laws  or  any  other
governmental  regulations that  may  apply  to  us,  we  may  be  subject  to  significant  civil,  criminal  and  administrative  penalties,
including, without limitation, damages, fines, imprisonment, exclusion from participation in government healthcare programs,
such  as  Medicare  and  Medicaid, and  the  curtailment  or  restructuring  of  our  operations,  which  could  have  a  material  adverse
effect on our business. If any of the physicians or other healthcare providers or entities with whom we expect to do business,
including our collaborators, are found not to be in compliance with applicable laws, they may be subject to criminal, civil or
administrative  sanctions, including  exclusions  from  participation  in  government  healthcare  programs,  which  could  also
materially affect our business.

U.S. federal income tax reform could adversely affect us.

On  December  22,  2017,  President  Donald  Trump  signed  into  law  sweeping  tax  reform,  which  overhauls  individual,  business  and
international taxes including, but not limited to:

● Cutting the corporate federal statutory tax rate to 21%;

● Limiting net interest expense deductions to 30% of adjusted taxable income; and

● Limiting the net operating loss deduction to 80% of taxable income.

The reduction in tax rate will result in a reduction in the deferred tax assets. We have previously used the 35% federal statutory tax rate to
calculate the value of those assets. Also, if we fail to generate significant taxable income, we may not be able to fully deduct the interest
expense  on  our  debt,  which  could  result  in  us  having  to  pay  increased  federal  income  taxes.  We  have  also  generated  substantial  taxable
losses in the past and may continue to do so in the future. Although the treatment of tax losses generated before December 31, 2018 has not
changed,  tax  losses  generated  in  fiscal  2019  and  beyond  will  only  be  able  to  offset  80%  of  taxable  income,  although  the  losses  may  be
carried  forward  indefinitely.  This  could  cause  us  to  have  to  pay  federal  income  taxes  despite  generating  a  loss  for  federal  income  tax
purposes  in  the  future.  We  continue  to  work  with  our  tax  advisors  to  determine  the  full  impact  that  the  new  tax  bill  will  have  on  our
Company.

Recently  enacted  and  future  legislation  may  increase  the  difficulty  and  cost  for  us  to  obtain  and  monitor  regulatory  approval  or
clearance of our product candidates and affect the prices we may obtain for our products.

In the United States and some foreign jurisdictions, there have been a number of legislative and regulatory changes and proposed changes
regarding the healthcare system that could prevent or delay clearance and/or approval of our product candidates, restrict or regulate post-
clearance and post-approval activities and affect our ability to profitably sell our products and any product candidates for which we obtain
marketing approval or clearance.

38

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition, FDA regulations and guidance are often revised or reinterpreted by the FDA in ways that may significantly affect our business
and  our  products. Any  new  regulations  or  revisions  or  reinterpretations  of  existing  regulations  may  impose  additional  costs  or  lengthen
review times of our products. Delays in receipt of or failure to receive regulatory clearances or approvals for our new products would have
a  material  adverse  effect  on  our  business,  results  of  operations  and  financial  condition.  In  addition,  the  FDA  is  currently  evaluating  the
510(k) process and may make substantial changes to industry requirements, including which devices are eligible for 510(k) clearance, the
ability to rescind previously granted 510(k) clearances and additional requirements that may significantly impact the process.

Among  policy  makers  and  payers  in  the  United  States  and  elsewhere,  there  is  significant  interest  in  promoting  changes  in  healthcare
systems  with  the  stated  goals  of  containing  healthcare  costs,  improving  quality  and  expanding  access.  In  the  United  States,  the  medical
device  industry  has  been  a  particular  focus  of  these  efforts  and  has  been  significantly  affected  by  major  legislative  initiatives.  In  March
2010,  President  Obama  signed  into  law  the  Patient  Protection  and Affordable  Care Act,  as  amended  by  the  Health  Care  and  Education
Affordability  Reconciliation Act,  or  collectively  the ACA,  a  sweeping  law  intended,  among  other  things,  to  broaden  access  to  health
insurance,  reduce  or  constrain  the  growth  of  healthcare  spending,  enhance  remedies  against  fraud  and  abuse,  add  new  transparency
requirements for the healthcare and health insurance industries, impose new taxes and fees on the health industry and impose additional
health policy reforms.

Among the provisions of the ACA of importance to our products and product candidates are:

● imposes an  annual  excise  tax  of  2.3%  on  any  entity  that  manufactures  or  imports  medical  devices  offered  for  sale  in  the  United
States, which began on January 1, 2013, but was suspended during 2016 and 2017 and has been suspended for 2018 and 2019;

● establishes a  new  Patient-Centered  Outcomes  Research  Institute  to  oversee  and  identify  priorities  in  comparative  clinical

effectiveness research in an effort to coordinate and develop such research; and

● implements payment system reforms including a national pilot program on payment bundling to encourage hospitals, physicians and

other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models.

In addition, other legislative changes have been proposed and adopted since the PPACA was enacted. For example, on January 2, 2013,
former  President  Obama  signed  into  law  the American  Taxpayer  Relief Act  of  2012,  or  the ATRA,  which,  among  other  things,  further
reduced Medicare payments to several providers, including hospitals, imaging centers and cancer treatment centers and increased the statute
of  limitations  period  for  the  government  to  recover  overpayments  to  providers  from  three  to  five  years.  Moreover,  certain  legislative
changes  to  and  regulatory  changes  under  the  PPACA  have  occurred  in  the  115th  United  States  Congress  and  under  the  Trump
Administration.  For  example,  on  December  22,  2017,  President  Trump  signed  a  budget  reconciliation  act  into  law,  which  among  other
things, repealed the penalty for individuals who do not maintain minimum essential coverage, which was a central component of PPACA’s
approach  to  expanding  coverage.  On  January  9,  2018,  President  Trump  signed  the  Bipartisan  Budget Act  of  2018,  which,  among  other
things, repealed the PPACA provision establishing an independent payment advisory board that would have submitted recommendations to
reduce Medicare spending if projected Medicare spending exceeded a specified growth rate.

Additional  legislative  changes  to  and  regulatory  changes  under  the  PPACA  remain  possible.  We  expect  that  other  state  and  federal
healthcare  reform  measures  will  be  adopted  in  the  future,  any  of  which  could  reduce  the  number  of  patients  with  coverage  or  limit  the
amounts that federal and state governments will pay for healthcare products and services, which could result in reduced demand for our
products or additional pricing pressure.

39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In the European Union and some other international markets, the government provides health care at a low cost to consumers and regulates
prices of healthcare products, patient eligibility or reimbursement levels to control costs for the government-sponsored health care system.
Many  countries  are  reducing  their  public  expenditures  and  we  expect  to  see  strong  efforts  to  reduce  healthcare  costs  in  international
markets,  including  patient  access  restrictions,  suspensions  on  price  increases,  prospective  and  possibly  retroactive  price  reductions  and
other recoupments and increased mandatory discounts or rebates and recoveries of past price increases. These cost control measures could
reduce our revenues. In addition, certain countries set prices by reference to the prices in other countries where our products are marketed.
Thus, our inability to secure adequate prices in a particular country may not only limit the marketing of our products within that country
but may also adversely affect our ability to obtain acceptable prices in other markets. This may create the opportunity for third-party cross
border trade or influence our decision to sell or not to sell a product, thus adversely affecting our geographic expansion plans and revenues.

Risks Related to Our Intellectual Property and Litigation

If the combination of patents, trade secrets and contractual provisions that we rely on to protect our intellectual property is inadequate,
our  ability  to  commercialize  our  orthopedic  products  successfully  will  be  harmed,  and  we  may  not  be  able  to  operate  our  business
profitably.

Our success depends significantly on our ability to protect our proprietary rights to the technologies incorporated in our products. We rely
on a combination of patent protection, trade secret laws and nondisclosure, confidentiality and other contractual restrictions to protect our
proprietary technology. However, these may not adequately protect our rights or permit us to gain or keep any competitive advantage.

The  issuance  of  a  patent  is  not  conclusive  as  to  its  scope,  validity  or  enforceability.  The  scope,  validity  or  enforceability  of  our  issued
patents  can  be  challenged  in  litigation  or  proceedings  before  the  U.S.  Patent  and  Trademark  Office,  or  the  USPTO,  or  foreign  patent
offices. In addition, our pending patent applications include claims to numerous important aspects of our products under development that
are not currently protected by any of our issued patents. We cannot assure you that any of our pending patent applications will result in the
issuance of patents to us. The USPTO or foreign patent offices may deny or require significant narrowing of claims in our pending patent
applications. Patents issued as a result of the pending patent applications, if any, may not provide us with significant commercial protection
or be issued in a form that is advantageous to us. Proceedings before the USPTO or foreign patent offices could result in adverse decisions
as to the priority of our inventions and the narrowing or invalidation of claims in issued patents. The laws of some foreign countries may
not protect our intellectual property rights to the same extent as the laws of the United States, if at all.

Our competitors may successfully challenge and invalidate or render unenforceable our issued patents, including any patents that may issue
in the future, which could prevent or limit our ability to market our products and could limit our ability to stop competitors from marketing
products that are substantially equivalent to ours. In addition, competitors may be able to design around our patents or develop products that
provide outcomes that are comparable to our products but that are not covered by our patents.

We have also entered into confidentiality and assignment of intellectual property agreements with all of our employees, consultants and
advisors as one of the ways we seek to protect our intellectual property and other proprietary technology. However, these agreements may
not  be  enforceable  or  may  not  provide  meaningful  protection  for  our  trade  secrets  or  other  proprietary  information  in  the  event  of
unauthorized use or disclosure or other breaches of the agreements.

In the event a competitor infringes upon any of our patents or other intellectual property rights, enforcing our rights may be difficult, time
consuming and expensive, and would divert management’s attention from managing our business. There can be no assurance that we will
be successful on the merits in any enforcement effort. In addition, we may not have sufficient resources to litigate, enforce or defend our
intellectual property rights.

40

 
 
 
 
 
 
 
 
 
 
We have no patent protection covering the composition of matter for our solid silicon nitride or the process we use for manufacturing
our solid silicon nitride, and competitors may create silicon nitride formulations substantially similar to ours.

Although we have a number of U.S. and foreign patents and pending applications relating to our solid silicon nitride products or product
candidates, we have no patent protection either for the composition of matter for our silicon nitride or for the processes of manufacturing
solid silicon nitride. As a result, competitors may create silicon nitride formulations substantially similar to ours and use their formulations
in products that may compete with our silicon nitride products, provided they do not violate our issued product patents. Although we have,
and will continue to develop, significant know-how related to these processes, there can be no assurance that we will be able to maintain
this  know-how  as  trade  secrets,  and  competitors  may  develop  or  acquire  equally  valuable  or  more  valuable  know-how  related  to  the
manufacture of silicon nitride.

We could become subject to intellectual property litigation that could be costly, result in the diversion of management’s time and efforts,
require  us  to  pay  damages,  prevent  us  from  marketing  our  commercially  available  products  or  product  candidates  and/or  reduce  the
margins we may realize from our products that we may commercialize.

The  medical  devices  industry  is  characterized  by  extensive  litigation  and  administrative  proceedings  over  patent  and  other  intellectual
property rights. Whether a product infringes a patent involves complex legal and factual issues, and the determination is often uncertain.
There may be existing patents of which we are unaware that our products under development may inadvertently infringe. The likelihood
that patent infringement claims may be brought against us increases as the number of participants in the orthopedic market increases and as
we achieve more visibility in the market place and introduce products to market.

Any infringement claim against us, even if without merit, may cause us to incur substantial costs, and would place a significant strain on
our financial resources, divert the attention of management from our core business, and harm our reputation. In some cases, litigation may
be  threatened  or  brought  by  a  patent  holding  company  or  other  adverse  patent  owner  who  has  no  relevant  product  revenues  and  against
whom our patents may provide little or no deterrence. If we were found to infringe any patents, we could be required to pay substantial
damages, including triple damages if an infringement is found to be willful, and royalties and could be prevented from selling our products
unless we obtain a license or are able to redesign our products to avoid infringement. We may not be able to obtain a license enabling us to
sell our products on reasonable terms, or at all, and there can be no assurance that we would be able to redesign our products in a way that
would  not  infringe  those  patents.  If  we  fail  to  obtain  any  required  licenses  or  make  any  necessary  changes  to  our  technologies  or  the
products that incorporate them, we may be unable to commercialize one or more of our products or may have to withdraw products from
the market, all of which would have a material adverse effect on our business, financial condition and results of operations.

In  addition,  in  order  to  further  our  product  development  efforts,  we  have  entered  into  agreements  with  orthopedic  surgeons  to  help  us
design and develop new products, and we expect to enter into similar agreements in the future. In certain instances, we have agreed to pay
such  surgeons  royalties  on  sales  of  products  which  incorporate  their  product  development  contributions.  There  can  be  no  assurance  that
surgeons with whom we have entered into such arrangements will not claim to be entitled to a royalty even if we do not believe that such
products  were  developed  by  cooperative  involvement  between  us  and  such  surgeons.  In  addition,  some  of  our  surgeon  advisors  are
employed by academic or medical institutions or have agreements with other orthopedic companies pursuant to which they have agreed to
assign or are under an obligation to assign to those other companies or institutions their rights in inventions which they conceive or develop
or help conceive or develop.

There can be no assurance that one or more of these orthopedic companies or institutions will not claim ownership rights to an invention we
develop  in  collaboration  with  our  surgeon  advisors  or  consultants  on  the  basis  that  an  agreement  with  such  orthopedic  company  or
institution gives it ownership rights in the invention or that our surgeon advisors on consultants otherwise have an obligation to assign such
inventions  to  such  company  or  institution. Any  such  claim  against  us,  even  without  merit,  may  cause  us  to  incur  substantial  costs,  and
would  place  a  significant  strain  on  our  financial  resources,  divert  the  attention  of  management  from  our  core  business  and  harm  our
reputation.

41

 
 
 
 
 
 
 
 
 
We may be subject to damages resulting from claims that we, our employees, or our independent sales agencies have wrongfully used or
disclosed  alleged  trade  secrets  of  our  competitors  or  are  in  breach  of  non-competition  agreements  with  our  competitors  or  non-
solicitation agreements.

Many  of  our  employees  were  previously  employed  at  other  orthopedic  companies,  including  our  competitors  and  potential  competitors.
Many of our former distributors and potential distributors sell, or in the past have sold, products of our competitors. We may be subject to
claims  that  either  we,  or  these  employees  or  distributors,  have  inadvertently  or  otherwise  used  or  disclosed  the  trade  secrets  or  other
proprietary  information  of  our  competitors.  In  addition,  we  have  been  and  may  in  the  future  be  subject  to  claims  that  we  caused  an
employee  or  sales  agent  to  break  the  terms  of  his  or  her  non-competition  agreement  or  non-solicitation  agreement.  Litigation  may  be
necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial
costs and be a distraction to management. If we fail in defending such claims, in addition to paying money damages, we may lose valuable
intellectual  property  rights  or  personnel.  A  loss  of  key  personnel  or  their  work  product  could  hamper  or  prevent  our  ability  to
commercialize products, which could have an adverse effect on our business, financial condition and results of operations.

If our silicon nitride products or our product candidates conflict with the rights of others, we may not be able to manufacture or market
our products or product candidates, which could have a material and adverse effect on us.

Our commercial success will depend in part on not infringing the patents or violating the other proprietary rights of third parties. Issued
patents held by others may limit our ability to develop commercial products. All issued patents are entitled to a presumption of validity
under the laws of the United States. If we need suitable licenses to such patents to permit us to develop or market our product candidates,
we  may  be  required  to  pay  significant  fees  or  royalties  and  we  cannot  be  certain  that  we  would  even  be  able  to  obtain  such  licenses.
Competitors or third parties may obtain patents that may cover subject matter we use in developing the technology required to bring our
products to market, that we use in producing our products, or that we use in treating patients with our products. We know that others have
filed  patent  applications  in  various  jurisdictions  that  relate  to  several  areas  in  which  we  are  developing  products.  Some  of  these  patent
applications have already resulted in patents and some are still pending. If we were found to infringe any of these issued patents or any of
the pending patent applications, when and if issued, we may be required to alter our processes or product candidates, pay licensing fees or
cease  activities.  If  use  of  technology  incorporated  into  or  used  to  produce  our  product  candidates  is  challenged,  or  if  our  processes  or
product candidates conflict with patent rights of others, third parties could bring legal actions against us, in Europe, the United States and
elsewhere, claiming damages and seeking to enjoin manufacturing and marketing of the affected products. Additionally, it is not possible to
predict with certainty what patent claims may issue from pending applications. In the United States, for example, patent prosecution can
proceed in secret prior to issuance of a patent, provided such application is not filed in foreign jurisdiction. For U.S. patent applications that
are also filed in foreign jurisdictions, such patent applications will not publish until 18 months from the filing date of the application. As a
result, third parties may be able to obtain patents with claims relating to our product candidates which they could attempt to assert against
us. Further, as we develop our products, third parties may assert that we infringe the patents currently held or licensed by them, and we
cannot predict the outcome of any such action.

There has been extensive litigation in the medical devices industry over patents and other proprietary rights. If we become involved in any
litigation,  it  could  consume  a  substantial  portion  of  our  resources,  regardless  of  the  outcome  of  the  litigation.  If  these  legal  actions  are
successful,  in  addition  to  any  potential  liability  for  damages,  we  could  be  required  to  obtain  a  license,  grant  cross-licenses  and  pay
substantial royalties in order to continue to manufacture or market the affected products.

We  cannot  assure  you  that  we  would  prevail  in  any  legal  action  or  that  any  license  required  under  a  third-party  patent  would  be  made
available on acceptable terms, or at all. Ultimately, we could be prevented from commercializing a product, or forced to cease some aspect
of our business operations, as a result of claims of patent infringement or violation of other intellectual property rights, which could have a
material and adverse effect on our business, financial condition and results of operations.

42

 
 
 
 
 
 
 
 
Risks Related to Potential Litigation from Operating Our Business

We  may  become  subject  to  potential  product  liability  claims,  and  we  may  be  required  to  pay  damages  that  exceed  our  insurance
coverage.

Our business exposes us to potential product liability claims that are inherent in the design, testing, manufacture, sale and distribution of
our currently marketed products and each of our product candidates that we are seeking to introduce to the market. The use of orthopedic
medical  devices  can  involve  significant  risks  of  serious  complications,  including  bleeding,  nerve  injury,  paralysis,  infection,  and  even
death. Any product liability claim brought against us, with or without merit, could result in the increase of our product liability insurance
rates  or  in  our  inability  to  secure  coverage  in  the  future  on  commercially  reasonable  terms,  if  at  all.  In  addition,  if  our  product  liability
insurance proves to be inadequate to pay a damage award, we may have to pay the excess of this award out of our cash reserves, which
could significantly harm our financial condition. If longer-term patient results and experience indicate that our products or any component
of  a  product  causes  tissue  damage,  motor  impairment  or  other  adverse  effects,  we  could  be  subject  to  significant  liability. A  product
liability claim, even one without merit, could harm our reputation in the industry, lead to significant legal fees, and result in the diversion of
management’s attention from managing our business.

Any claims relating to our improper handling, storage or disposal of biological or hazardous materials could be time consuming and
costly.

Although  we  do  not  believe  that  the  manufacture  of  our  silicon  nitride  or  non-silicon  nitride  products  will  involve  the  use  of  hazardous
materials, it is possible that regulatory authorities may disagree or that changes to our manufacturing processes may result in such use. Our
business and facilities and those of our suppliers and future suppliers may therefore be subject to foreign, federal, state and local laws and
regulations  governing  the  use,  manufacture,  storage,  handling  and  disposal  of  hazardous  materials  and  waste  products.  We  may  incur
significant expenses in the future relating to any failure to comply with environmental laws. Any such future expenses or liability could
have a significant negative impact on our business, financial condition and results of operations.

Risks Related to Our Common Stock

The price of our common stock is volatile and is likely to continue to fluctuate due to reasons beyond our control.

The volatility of orthopedic company stocks, including shares of our common stock, often do not correlate to the operating performance of
the  companies  represented  by  such  stocks  or  our  operating  performance.  Some  of  the  factors  that  may  cause  the  market  price  of  our
common stock to fluctuate include:

● CTL Medical’s ability to sell silicon nitride based spinal fusion products and our cost of manufacturing such products for  CTL

Medical;

● our ability  to  develop,  obtain  regulatory  clearances  or  approvals  for,  and  market  new  and  enhanced  product  candidates  on  a

timely basis;

● our ability to enter into OEM and private label partnership agreements and the terms of those agreements;

● changes in governmental regulations or in the status of our regulatory approvals, clearances or future applications;

● our announcements or our competitors’ announcements regarding new products, product enhancements, significant contracts,
number and productivity of distributors, number of hospitals and surgeons using products, acquisitions or strategic investments;

● announcements of technological or medical innovations for the treatment of orthopedic pathology;

● delays or other problems with the manufacturing of our products, product candidates and related instrumentation;

● volume and timing of orders for our products and our product candidates, if and when commercialized;

● changes in the availability of third-party reimbursement in the United States and other countries;

● quarterly variations in our or our competitors’ results of operations;

43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
● changes in earnings estimates or recommendations by securities analysts, if any, who cover our common stock;

● failure to meet estimates or recommendations by securities analysts, if any, who cover our stock;

● changes in the fair value of our derivative liabilities resulting from changes in the market price of our common stock, which

may result in significant fluctuations in our quarterly and annual operating results;

● changes in healthcare policy in the United States and internationally;

● product liability claims or other litigation involving us;

● sales of a substantial aggregate number of shares of our common stock;

● sales of large blocks of our common stock, including sales by our executive officers, directors and significant stockholders;

● disputes or other developments with respect to intellectual property rights;

● changes in accounting principles;

● changes to tax policy; and

● general market  conditions  and  other  factors,  including  factors  unrelated  to  our  operating  performance  or  the  operating

performance of our competitors.

These and other external factors may cause the market price and demand for our common stock to fluctuate substantially, which may limit
or  prevent  our  stockholders  from  readily  selling  their  shares  of  common  stock  and  may  otherwise  negatively  affect  the  liquidity  of  our
common stock. In addition, in the past, when the market price of a stock has been volatile, holders of that stock have sometimes instituted
securities class action litigation against the company that issued the stock. If our stockholders brought a lawsuit against us, we could incur
substantial costs defending the lawsuit regardless of the merits of the case or the eventual outcome. Such a lawsuit also would divert the
time and attention of our management from running our company.

Securities  analysts  may  not  continue  to  provide  coverage  of  our  common  stock  or  may  issue  negative  reports,  which  may  have  a
negative impact on the market price of our common stock.

Since completing our initial public offering of shares of our common stock in February 2014, a limited number of securities analysts have
begun  providing  research  coverage  of  our  common  stock.  If  securities  analysts  do  not  continue  to  cover  our  common  stock,  the  lack  of
research coverage may cause the market price of our common stock to decline. The trading market for our common stock may be affected
in part by the research and reports that industry or financial analysts publish about our business. If one or more of the analysts who elect to
cover us downgrade our stock, our stock price would likely decline rapidly. If one or more of these analysts cease coverage of us, we could
lose visibility in the market, which in turn could cause our stock price to decline. In addition, under the Sarbanes-Oxley Act of 2002, or the
Sarbanes-Oxley Act, and a global settlement among the Securities and Exchange Commission, or the SEC, other regulatory agencies and a
number  of  investment  banks,  which  was  reached  in  2003,  many  investment  banking  firms  are  required  to  contract  with  independent
financial analysts for their stock research. It may be difficult for a company such as ours, with a smaller market capitalization, to attract
independent financial analysts that will cover our common stock. This could have a negative effect on the market price of our stock.

44

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
Anti-takeover provisions in our organizational documents and Delaware law may discourage or prevent a change in control, even if an
acquisition  would  be  beneficial  to  our  stockholders,  which  could  affect  our  stock  price  adversely  and  prevent  attempts  by  our
stockholders to replace or remove our current management.

Our  restated  certificate  of  incorporation  and  restated  bylaws  contain  provisions  that  could  discourage,  delay  or  prevent  a  merger,
acquisition or other change in control of our company or changes in our board of directors that our stockholders might consider favorable,
including  transactions  in  which  you  might  receive  a  premium  for  your  shares.  These  provisions  also  could  limit  the  price  that  investors
might  be  willing  to  pay  in  the  future  for  shares  of  our  common  stock,  thereby  depressing  the  market  price  of  our  common  stock.
Stockholders  who  wish  to  participate  in  these  transactions  may  not  have  the  opportunity  to  do  so.  Furthermore,  these  provisions  could
prevent or frustrate attempts by our stockholders to replace or remove management. These provisions:

● allow the authorized number of directors to be changed only by resolution of our board of directors;

● provide for a classified board of directors, such that not all members of our board will be elected at one time;

● prohibit our  stockholders  from  filling  board  vacancies,  limit  who  may  call  stockholder  meetings,  and  prohibit  the  taking  of

stockholder action by written consent;

● prohibit our stockholders from making certain changes to our restated certificate of incorporation or restated bylaws except with

the approval of holders of 75% of the outstanding shares of our capital stock entitled to vote;

● require advance  written  notice  of  stockholder  proposals  that  can  be  acted  upon  at  stockholders  meetings  and  of  director

nominations to our board of directors; and

● authorize our board of directors to create and issue, without prior stockholder approval, preferred stock that may have rights
senior to  those  of  our  common  stock  and  that,  if  issued,  could  operate  as  a  “poison  pill”  to  dilute  the  stock  ownership of  a
potential hostile acquirer to prevent an acquisition that is not approved by our board of directors.

In addition, we are subject to the provisions of Section 203 of the Delaware General Corporation Law, which may prohibit certain business
combinations  with  stockholders  owning  15%  or  more  of  our  outstanding  voting  stock. Any  delay  or  prevention  of  a  change  in  control
transaction or changes in our board of directors could cause the market price of our common stock to decline.

We do not intend to pay cash dividends.

We have never declared or paid cash dividends on our capital stock and we do not anticipate paying any cash dividends in the foreseeable
future. We currently intend to retain all available funds and any future earnings for debt service and use in the operation and expansion of
our business. In addition, the terms of any future debt or credit facility may preclude us from paying any dividends.

Risks Related to Public Companies

We  are  an  “emerging  growth  company”  as  defined  in  the  Jumpstart  Our  Business  Startups  Act  of  2012  and  a  “smaller  reporting
company”  and  the  reduced  disclosure  requirements  applicable  to  emerging  growth  companies  and  smaller  reporting  companies  may
make our common stock less attractive to investors.

We are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. For as long as we
continue to be an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable
to other public companies that are not emerging growth companies, including (1) not being required to comply with the auditor attestation
requirements  of  Section  404  of  the  Sarbanes-Oxley  Act,  (2)  reduced  disclosure  obligations  regarding  executive  compensation  in  our
periodic  reports  and  proxy  statements  and  (3)  exemptions  from  the  requirements  of  holding  a  nonbinding  advisory  vote  on  executive
compensation  and  stockholder  approval  of  any  golden  parachute  payments  not  previously  approved. Additionally,  under  the  JOBS Act,
emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private
companies. We are electing to delay such adoption of new or revised accounting standards on the relevant dates on which adoption of such
standards is required for non-emerging growth companies. As a result of this election, our financial statements may not be comparable to
the financial statements of other public companies.

45

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
We may take advantage of these exemptions until we are no longer an emerging growth company. Under the JOBS Act, we may be able to
maintain emerging growth company status for up to five years, although circumstances could cause us to lose that status earlier, including if
the market value of our common stock held by non-affiliates exceeds $700.0 million as of any June 30 before the end of such five-year
period or if we have total annual gross revenue of $1.0 billion or more during any fiscal year before that time, in which cases we would no
longer  be  an  emerging  growth  company  as  of  the  following  December  31.  Additionally,  if  we  issue  more  than  $1.0  billion  in  non-
convertible debt during any three-year period before that time, we would cease to be an emerging growth company immediately.

We are also currently a “smaller reporting company” as defined in the Securities Exchange Act of 1934, and in the event that we are still
considered  a  smaller  reporting  company  at  such  time  as  we  cease  being  an  emerging  growth  company,  we  will  be  required  to  provide
additional disclosure in our SEC filings. However, similar to emerging growth companies, smaller reporting companies are able to provide
simplified executive compensation disclosures in their filings, are exempt from the provisions of Section 404(b) of the Sarbanes-Oxley Act
requiring  that  independent  registered  public  accounting  firms  provide  an  attestation  report  on  the  effectiveness  of  internal  control  over
financial reporting, and have certain other decreased disclosure obligations in their SEC filings, including, among other things, only being
required to provide two years of audited financial statements in annual reports. We cannot predict whether investors will find our common
stock less attractive because of our reliance on any of these exemptions. If some investors find our common stock less attractive as a result,
there may be a less active trading market for our common stock and our stock price may be more volatile.

We could be delisted from Nasdaq, which could seriously harm the liquidity of our stock and our ability to raise capital.

On August 13, 2018, we received a notice from the Nasdaq Listing Qualifications Department (the “Staff”) of the Nasdaq Stock Market
LLC (“Nasdaq”) stating that the bid price of the Company’s common stock for the last 30 consecutive trading days had closed below the
minimum $1.00 per share required for continued listing under Listing Rule 5550(a)(2). If the Company does not regain compliance with
Rule 5550(a)(2) by February 11, 2019, the Company may be afforded a second 180 calendar day period to regain compliance. To qualify,
the  Company  would  be  required  to  meet  the  continued  listing  requirement  for  market  value  of  publicly  held  shares  and  all  other  initial
listing  standards  for  The  Nasdaq  Capital  Market,  except  for  the  minimum  bid  price  requirement.  In  addition,  the  Company  would  be
required  to  notify  Nasdaq  of  its  intent  to  cure  the  deficiency  during  the  second  compliance  period,  which  may  include,  if  necessary,
implementing  a  reverse  stock  split.  There  can  be  no  assurance  that  the  Company  will  be  able  to  regain  compliance  with  Nasdaq
requirements or will otherwise be in compliance with other Nasdaq listing criteria.

On February 13, 2019, we received a notice from the Staff that we were eligible for an additional 180 calendar day period, or until August
12, 2019, to regain compliance. This second 180-day period relates exclusively to the bid price deficiency. We may be delisted during the
180 days for failure to maintain compliance with any other listing requirements for which we are currently on notice or which occurs during
this period. If we choose to implement a reverse stock split, it must be completed no later than ten business days prior to the expiration date
in order to timely regain compliance.

If we cease to be eligible to trade on the Nasdaq Capital Market:

● We may have to pursue trading on a less recognized or accepted market, such as the OTC Bulletin Board or the “pink sheets.”

● The trading price of our common stock could suffer, including an increased spread between the “bid” and “asked” prices quoted by

market makers.

● Shares of our common stock could be less liquid and marketable, thereby reducing the ability of stockholders to purchase or sell our
shares as quickly and as inexpensively as they have done historically. If our stock is traded as a “penny stock,” transactions in our
stock would be more difficult and cumbersome.

● We may be unable to access capital on favorable terms or at all, as companies trading on alternative markets may be viewed as less
attractive investments with higher associated risks, such that existing or prospective institutional investors may be less interested in,
or prohibited from, investing in our common stock. This may also cause the market price of our common stock to decline.

46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
We  incur  substantial  costs  as  a  result  of  being  a  public  company  and  our  management  expects  to  devote  substantial  time  to  public
company compliance programs.

As a public company, we incur significant legal, insurance, accounting and other expenses, including costs associated with public company
reporting.  We  intend  to  invest  resources  to  comply  with  evolving  laws,  regulations  and  standards,  and  this  investment  will  result  in
increased  general  and  administrative  expenses  and  may  divert  management’s  time  and  attention  from  product  development  and
commercialization  activities.  If  our  efforts  to  comply  with  new  laws,  regulations  and  standards  differ  from  the  activities  intended  by
regulatory or governing bodies due to ambiguities related to practice, regulatory authorities may initiate legal proceedings against us, and
our  business  may  be  harmed.  These  laws  and  regulations  could  make  it  more  difficult  and  costlier  for  us  to  obtain  director  and  officer
liability insurance for our directors and officers, and we may be required to accept reduced coverage or incur substantially higher costs to
obtain  coverage.  These  factors  could  also  make  it  more  difficult  for  us  to  attract  and  retain  qualified  executive  officers  and  qualified
members of our board of directors, particularly to serve on our audit and compensation committees. In addition, if we are unable to continue
to meet the legal, regulatory and other requirements related to being a public company, we may not be able to maintain the listing of our
common stock on The NASDAQ Capital Market, which would likely have a material adverse effect on the trading price of our common
stock.

ITEM 1B. UNRESOLVED STAFF COMMENTS

Not applicable.

ITEM 2.

PROPERTIES

Our  54,000  square  foot  corporate  office  and  manufacturing  facilities  are  located  in  Salt  Lake  City,  Utah.  We  occupy  these  facilities
pursuant to a lease that expires in December 2019. Pursuant to the terms of the lease agreement, we may extend the lease for two additional
periods of five years each. We believe that our existing facilities are adequate for our current and projected needs for the foreseeable future.

ITEM 3.

LEGAL PROCEEDINGS

We are currently not a party to any material legal proceedings. However, our industry is characterized by frequent claims and litigation,
including  claims  regarding  intellectual  property  and  product  liability. As  a  result,  we  may  be  subject  to  various  legal  proceedings  in  the
future.

ITEM 4. MINE SAFETY DISCLOSURES

This item does not apply to our business.

47

 
 
 
 
 
 
 
 
 
 
 
 
PART II

ITEM 5. MARKET FOR  REGISTRANT’S  COMMON  EQUITY,  RELATED  STOCKHOLDER  MATTERS,  AND  ISSUER

PURCHASES OF EQUITY SECURITIES

Market Information

Our shares of common stock are currently quoted on The NASDAQ Capital Market under the symbol “SINT”.

The following table sets forth the high and low sale prices of our common stock, as reported by NASDAQ Capital Markets for the periods
indicated:

First Quarter
Second Quarter
Third Quarter
Fourth Quarter

First Quarter
Second Quarter
Third Quarter
Fourth Quarter

High

High

2018

4.09    $
4.12    $
0.95    $
0.41    $

2017

8.87    $
5.39    $
5.24    $
6.94    $

  $
  $
  $
  $

  $
  $
  $
  $

Low

Low

1.37 
0.90 
0.18 
0.16 

4.24 
3.15 
3.24 
2.89 

Prices listed are adjusted to reflect both the January 25, 2016 reverse stock split and the November 10, 2017 reverse stock split.

Holders of Record

As of February 25, 2019, we had approximately 365 holders of record of our common stock. Because many of our shares of common stock
are  held  by  brokers  and  other  institutions  on  behalf  of  stockholders,  this  number  is  not  indicative  of  the  total  number  of  stockholders
represented by these stockholders of record.

Dividends

We have not declared or paid dividends to stockholders since inception and do not plan to pay cash dividends in the foreseeable future. We
currently intend to retain earnings, if any, to finance our growth.

Issuer Purchases of Equity Securities

None

ITEM 6.

SELECTED FINANCIAL DATA

Not applicable.

ITEM 7. MANAGEMENT’S DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS  OF

OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated
financial statements and related notes appearing elsewhere in this Annual Report. This discussion and analysis contain forward-looking
statements  based  upon  current  beliefs,  plans,  expectations,  intentions  and  projections  that  involve  risks,  uncertainties  and  assumptions,
such as statements regarding our plans, objectives, expectations, intentions and projections. Our actual results and the timing of selected
events could differ materially from those anticipated in these forward-looking statements as a result of several factors, including those set
forth under “Risk Factors” and elsewhere in this Annual Report.

48

 
 
 
 
 
  
 
 
 
 
 
 
   
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
Overview

We  are  a  biomaterials  company  focused  on  providing  ceramic  based  biomaterial  solutions  in  a  variety  of  medical  and  industrial
applications.  To  date,  our  primary  focus  has  been  the  research,  development  and  commercialization  of  medical  implant  products
manufactured with silicon nitride. We believe that silicon nitride has a superb combination of properties that make it ideally suited for long-
term human implantation. Other biomaterials are based on bone grafts, metal alloys, and polymers- all of which have well-known practical
limitations  and  disadvantages.  In  contrast,  silicon  nitride  has  a  legacy  of  success  in  the  most  demanding  and  extreme  industrial
environments.  As  a  human  implant  material,  silicon  nitride  offers  bone  ingrowth,  resistance  to  bacterial  and  viral  infection,  ease  of
diagnostic imaging, resistance to corrosion, and superior strength and fracture resistance, among other advantages, all of which claims are
validated  in  our  large  and  growing  inventory  of  peer-reviewed,  published  literature  reports.  We  believe  that  our  versatile  silicon  nitride
manufacturing expertise positions us favorably to introduce new and innovative devices in the medical and non-medical fields.

We also believe that we are the first and only company to commercialize silicon nitride medical implants. Prior to October 1, 2018, we
designed, manufactured and commercialized silicon nitride products for our own behalf in the spine implant market. Over 33,000 of our
spinal implants manufactured with silicon nitride have been implanted into patients, with an excellent safety record. On October 1, 2018,
we sold our spine implant business to CTL Medical and now manufacture spine implants made with silicon nitride for CTL Medical. Prior
to  selling  our  spine  implant  business  to  CTL  Medical,  we  had  received  510(k)  regulatory  clearance  in  the  United  States,  a  CE  mark  in
Europe, ANVISA  approval  in  Brazil,  and ARTG  and  Prostheses  approvals  in Australia  for  a  number  of  silicon  nitride  spine  implant
products  designed  for  spinal  fusion  surgery.  Spine  implant  products  manufactured  by  us  from  silicon  nitride  are  currently  marketed  and
sold by CTL Medical under the Valeo® brand to surgeons and hospitals in the United States and to selected markets in Europe and South
America. These implants are designed for use in cervical (neck) and thoracolumbar (lower back) spine surgery. We are collaborating with
CTL Medical to establish a commercial partner in Australia and also working with other partners to obtain regulatory approval for silicon
nitride implants in Japan.

The  sale  of  our  spine  implant  business  to  CTL  Medical  enables  us  to  now  focus  on  our  core  competencies.  These  are  research  and
development of silicon nitride and the design and manufacture of medical and nonmedical products manufactured from silicon nitride and
other  ceramic  materials  for  our  own  account  and  in  collaboration  with  other  medical  device  manufacturers.  We  are  targeting  original
equipment manufacturer (“OEM”) – including CTL Medical - and private label partnerships in order to accelerate adoption of silicon nitride
in future markets such as coating products with silicon nitride, hip and knee replacements, dental and maxillofacial implants, extremities,
trauma,  and  sports  medicine.  Existing  biomaterials,  based  on  plastics,  metals,  and  bone  grafts  have  well-recognized  limitations  that  we
believe  are  addressed  by  silicon  nitride,  and  we  are  uniquely  positioned  to  convert  existing,  successful  implant  designs  made  by  other
companies into products manufactured with silicon nitride. OEM and private label partnerships allow us to work with a variety of partners,
accelerate  the  adoption  of  silicon  nitride,  and  realize  incremental  revenue  at  improved  operating  margins,  when  compared  to  the  cost-
intensive direct sales model.

We believe that silicon nitride addresses many of the biomaterial-related limitations in fields such as hip and knee replacements, dental and
maxillofacial implants, sports medicine, extremities, and trauma surgery. We further believe that the inherent material properties of silicon
nitride, and the ability to formulate the material in a variety of compositions, combined with precise control of the surface properties of the
material, opens up a number of commercial opportunities across orthopedic surgery, neurological surgery, maxillofacial surgery, and other
medical disciplines.

Components of our Results of Operations

We  manage  our  business  within  one  reportable  segment,  which  is  consistent  with  how  our  management  reviews  our  business,  makes
investment and resource allocation decisions and assesses operating performance.

Product Revenue

We derive our product revenue primarily from the manufacture and sale of spinal fusion products, used in the treatment of spine disorders,
to CTL Medical, with whom we have a 10-year exclusive sales agreement in place. We are currently pursuing other sales opportunities for
silicon nitride products outside the spinal fusion application. We generally recognize revenue from sales at the time the product is shipped.
In general, our customers do not have any rights of return or exchange.

We believe our product revenue will increase as CTL Medical increases sales of silicon nitride spinal fusion products, as we secure other
opportunities to manufacture third party products with silicon nitride, and as we continue to introduce new products into the market.

Cost of Revenue

The expenses that are included in cost of revenue include all in-house manufacturing costs for the products we manufacture.

49

 
 
 
 
 
 
 
 
 
 
 
 
 
  
Gross Profit

Our gross profit measures our product revenue relative to our cost of revenue. We expect our gross profit to decrease as we expand the
penetration of our silicon nitride technology platform through OEM and private label partnerships, which offer additional avenues for the
adoption of silicon nitride. Prior to the sale of our retail spine business, our revenues and gross profits were based on our retail sales. With
the focus on OEM and private label partnerships, the margins are lower, thus causing the decrease in gross profit.

Research and Development Expenses

Our  research  and  development  costs  are  expensed  as  incurred.  Research  and  development  costs  consist  of  engineering,  product
development, clinical trials, test-part manufacturing, testing, developing and validating the manufacturing process, manufacturing, facility
and regulatory-related costs. Research and development expenses also include employee compensation, employee and non-employee stock-
based  compensation,  supplies  and  materials,  consultant  services,  and  travel  and  facilities  expenses  related  to  research  and  development
activities.

We expect to incur additional research and development costs as we continue to develop new spinal fusion products, our product candidates
for  total  joint  replacements,  such  as  our  total  hip  replacement  product  candidate,  and  dental  applications  which,  may  increase  our  total
research and development expenses.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries, benefits and other related costs, including stock-based compensation for
certain members of our executive team and other personnel employed in finance, legal, compliance, administrative, information technology,
customer service, executive and human resource departments. General and administrative expenses also include other expenses not part of
the other cost categories mentioned above, including facility expenses and professional fees for accounting and legal services.

Results of Operations

Year Ended December 31, 2018 Compared to the Year Ended December 31, 2017

The  following  table  sets  forth,  for  the  periods  indicated,  our  results  of  operations  for  the  years  ended  December  31,  2018  and  2017  (in
thousands):

Year Ended December 31,

2018

2017

$ Change

    % Change  

Product revenue
Costs of revenue
Gross profit
Operating expenses:

  $

95    $
56   
39   

-    $
-   
-   

Research and development
General and administrative
Sales and marketing
Goodwill impairment
Total operating expenses
Loss from operations
Other income (expense)
Net loss before income taxes
Provision for income taxes
Loss from continuing operations
Loss from discontinued operations
Gain on sale of discontinued operations
Net loss
Deemed dividend related to beneficial conversion feature and
accretion of discount on convertible series A preferred stock  
Net loss attributable to common stockholders

  $

2,991   
3,866   
135   
6,163   
13,155   
(13,116)  
3,427   
(9,689)  
-   
(9,689)  
(324)  
1,361   
(8,652)  

3,506   
3,654   
325   
-   
7,485   
(7,485)  
1,724   
(5,761)  
-   
(5,761)  
(3,568)  
-   
(9,329)  

(13,900)  
(22,552)   $

-   
(9,329)   $

(13,900)  
(13,223)  

50

95   
56   
39   

(515)  
212   
(190)  
6,163   
5,670   
(5,631)  
1,703   
(3,928)  
-   
(3,928)  
3,244   
1,361   
677   

100%
100%
100%

-15%
6%
-58%
100%
76%
75%
99%
-68%
N/A 
-68%
-91%
100%
7%

-100%
-142%

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Product Revenue

Total  silicon  nitride  revenue  was  $0.1  million  in  2018  as  compared  to  $0.0  million  in  2017,  an  increase  of  $0.1  million  or  100%.  This
increase was due the sale of the retail spine business in October 2018, the restatement of 2017 revenues to $0.0 million as a result of the
discontinued  operations  and  the  subsequent  sale  of  only  silicon  nitride  during  the  fourth  quarter  of  2018.  Also,  as  a  result  of  the
discontinued operations treatment and the sale of the retail spine business, international revenue was eliminated completely.

Costs of Revenue and Gross Profit

Our cost of revenue increased $0.06 million, or 100%, as compared to the same period in 2017. Gross profit increased $0.04 million, or
100%, as compared to the same period in 2017. Both increases are due to the discontinued operations treatment and the sale of the retail
spine business in October 2018.

Research and Development Expenses

Research and development expenses decreased $0.5 million, or 15%, as compared to the same period in 2017. This decrease was primarily
due to a $0.2 million increase in consulting offset by a $0.4 million reduction in payroll and payroll related expenses and a $0.1 million
reduction in clinical studies and testing. The remainder of the decrease is attributable to the calculation for discontinued operations.

General and Administrative Expenses

General and administrative expenses increased $0.2 million, or 6%, as compared to the same period in 2017. This increase was primarily
due to a $0.1 million decrease in amortization expense, a $0.1 million decrease in business insurance expense and a $0.1 million decrease in
travel and travel related expenses. All decreases were offset by an increase attributable to the calculation for discontinued operations.

Sales and Marketing Expenses

Sales and marketing expenses decreased $0.2 million, or 58%, as compared to the same period in 2017. This decrease was primarily due to
a $0.3 million decrease in payroll and payroll related expenses, a $0.1 million decrease in depreciation expense, a $0.1 million decrease in
advertising and marketing expense, a $0.1 million decrease in travel expenses, offset by a $0.1 million increase in clinical studies from prior
period related studies. The remainder of the offsetting increase is attributable to the calculation for discontinued operations.

51

 
 
 
 
 
 
 
 
 
 
 
 
Deemed Dividend

Deemed dividend in 2018 related to a beneficial conversion feature and accretion of discount on convertible preferred stock valued at $13.9
million  in  2018,  compared  to  none  for  2017. A  beneficial  conversion  amount  was  calculated  in  association  with  the  2018  issuance  of
certain convertible preferred stock and warrants that could convert to common stock at a discount below the trading price on the date of
issuance. 10,926 shares of the preferred stock were converted to common stock during 2018. No such stock was issued or converted during
2017.

Other Income (Expense), Net

Other income increased $1.7 million, or 99%, as compared to the same period in 2017. This increase was primarily due to a $3.9 million
increase  in  the  change  in  fair  value  of  derivative  liabilities  and  the  $0.1  million  increase  in  interest  income  and  the  disposal  of  surgical
instruments.  This  increase  was  offset  by  increases  in  expenses  as  follows:  an  increase  of  $1.3  million  in  the  loss  on  extinguishment  of
derivative liabilities, the increase of $0.6 million in offering costs, the increase of $0.3 million in the loss on the extinguishment of debt and
the increase of $0.1 million in interest expense.

Liquidity and Capital Resources

The consolidated financial statements have been prepared assuming we will continue to operate as a going concern, which contemplates the
realization  of  assets  and  settlement  of  liabilities  in  the  normal  course  of  business,  and  does  not  include  any  adjustments  to  reflect  the
possible future effects on the recoverability and classification of assets or the amounts and classifications of liabilities that may result from
uncertainty related to its ability to continue as a going concern within one year from the date of issuance of these consolidated financial
statements.

For the years ended December 31, 2018 and 2017, we incurred a net loss of $8.8 million and $9.3 million, respectively, and used cash in
operations  of  $9.3  million  and  $4.7  million,  respectively.  We  had  an  accumulated  deficit  of  $229.4  million  and  $220.6  million  as  of
December  31,  2018  and  2017,  respectively.  To  date,  our  operations  have  been  principally  financed  from  proceeds  from  the  issuance  of
preferred and common stock, convertible debt and bank debt and, to a lesser extent, cash generated from product sales. It is anticipated that
we will continue to generate operating losses in the foreseeable future and use cash in operations. Our continuation as a going concern is
dependent  upon  our  ability  to  increase  sales,  implement  cost  saving  measures  and/or  raise  additional  funds  through  the  capital  markets.
Whether and when we can attain profitability and positive cash flows from operations or obtain additional financing is uncertain.

In 2016 we implemented certain cost saving measures, including workforce and office space reductions, and have continued to evaluate
additional cost savings alternatives during 2017 and 2018. These additional cost savings measures may include additional workforce and
research and development reductions, as well as cuts to certain other operating expenses. We are actively generating additional scientific
and  clinical  data  to  have  it  published  in  leading  industry  publications.  The  unique  features  of  our  silicon  nitride  material  are  not  well
known, and the publication of such data could help sales efforts as we approach new prospects. We are also making additional changes to
the  sales  strategy,  including  a  focus  on  revenue  growth  by  expanding  the  use  of  silicon  nitride  in  other  areas  outside  of  spinal  fusion
applications.

We have common stock that is publicly traded and have been able to successfully raise capital when needed since the date of our initial
public  offering.  In  March  2018,  we  closed  on  gross  proceeds  of  $1.4  million,  before  payment  of  placement  agent  fees  and  costs  on  a
warrant reprice and exercise transaction. Additionally, on May 14, 2018, we closed on a public offering of units, consisting of convertible
preferred  stock  and  warrants,  for  gross  proceeds  of  $15  million,  which  excludes  underwriting  discounts  and  commissions  and  offering
expenses  payable  by  us.  We  are  engaged  in  discussions  with  investment  and  banking  firms  to  examine  financing  alternatives,  including
options for another public offering of our preferred or common stock. On October 1, 2018, we sold the retail spine business. This sale will
provide cash flows totaling $2.5 million over the next eighteen months and $3.5 million for the following eighteen months. The buyer also
assumed the Company’s $2.5 million related party note payable.

52

 
 
 
 
 
 
 
 
 
 
 
Although we are seeking to obtain additional equity and/or debt financing, such funding is not assured and may not be available to us on
favorable or acceptable terms and may involve significant restrictive covenants. Any additional equity financing is also not assured and, if
available to us, will most likely be dilutive to our current stockholders. If we are not able to obtain additional debt or equity financing on a
timely basis, the impact on us will be material and adverse.

These uncertainties create substantial doubt about our ability to continue as a going concern. The consolidated financial statements do not
include any adjustments that might result from the outcome of these uncertainties.

Cash Flows

The following table summarizes, for the periods indicated, cash flows from operating, investing and financing activities (in thousands):

Net cash used in operating activities – continuing operations
Cash loss on sale – discontinued operations
Net cash provided by operating activities – discontinued operations

Net cash used in operating activities

Net cash used in investing activities – continuing operations
Net cash used in investing activities – discontinued operations

Net cashed used in investing activities

Net cash provided by (used in) financing activities – continuing operations
Net cash provided by financing activities – discontinued operations

Net cash provided by (used in) financing activities

Net cash provided (used)

Net Cash Used in Operating Activities

Year Ended December 31,
2017
2018

  $

  $

(9,328)   $
(695)  
675   
(9,348)  
(61)  
(84)  
(145)  
14,401   
-   
14,401   

4,908    $

(7,127)
- 
2,447 
(4,680)
(6)
(1,131)
(1,137)
(3,009)
2,450 
(559)

(6,376)

Net cash used in operating activities was $9.3 million in 2018, compared to $4.7 million used in 2017, an increase of $4.6 million. Offset by
the decrease in the net loss, and related non-cash add backs to the net loss, the decrease in cash used for operating activities during 2018
was primarily due to changes in the movement of working capital items during 2018 as compared to the same period in 2017 as follows: a
$0.1 million decrease in trade accounts receivable, a $0.03 million decrease in prepaid expenses and other current assets, a $0.01 million
decrease in inventories, a $1.8 million decrease in accounts payable and accrued liabilities and included a decrease of $1.8 million in the net
cash provided by discontinued operations and an increase of $0.7 million in the cash loss on the sale of discontinued operations. The $9.3
million  amount  for  2018  was  comprised  of  net  cash  used  in  continuing  operations  of  $9.4  million,  a  cash  loss  on  sale  of  discontinued
operations  of  $0.7  million  and  net  cash  provided  by  discontinued  operations  of  $0.8  million.  The  $4.7  million  amount  for  2017  was
comprised of net cash used in continuing operations of $7.2 million and net cash provided by discontinued operations of $2.5 million. The
$2.5  million  in  net  cash  provided  by  discontinued  operations  during  2017  would  have  transitioned  to  $2.1  million  in  net  cash used  by
discontinued operations were it not for a $4.6 million increase in the slow-moving reserve during 2017.  No inventory reserve was recorded
in 2018.

Net Cash Used in Investing Activities

Net cash used in investing activities was $0.2 million during 2018, compared to $1.1 million used in investing activities during the same
period in 2017, a decrease of $1.1 million. The decrease in cash used in investing activities during 2018 was due to an increase of $0.1
million  for  the  purchase  of  an  intangible  asset,  the  increase  of  $0.05  million  for  the  purchase  of  property  and  equipment,  offset  by  a
decrease of $1.1 million in cash used by discontinued  operations.  The  $0.2  million  amount  for  2018  was  comprised  of  net  cash  used  in
continuing operations of $0.1 million and net cash used discontinued operations of $0.1 million. The $0.9 million for 2017 was comprised
of net cash used in continuing operations of $0.01 million and net cash used in discontinued operations of $1.1 million.

Net Cash Provided by Financing Activities

Net cash provided by financing activities was $14.4 million during 2018, compared to $0.6 million used in financing activities during the
same period in 2017, an increase of $15.0 million. The increase was primarily due to a $6.9 million increase in cash generated from the
issuance  of  warrant  derivative  liabilities,  a  $6.7  million  increase  in  cash  generated  from  the  issuance  of  preferred  stock,  a  $1.7  million
increase in cash generated from the exercise of warrants, a $0.7 million increase in proceeds from the issuance of debt and included a $4.5
million decrease in payment on debt, all of which was offset by a decrease of $3.1 million in cash generated from the issuance of common
stock  and  a  decrease  of  $2.4  million  in  cash  provided  by  discontinued  operations.  The  $14.4  million  for  2018  is  comprised  of  net  cash
provided by discontinued operations. The $1.2 million for 2017 was comprised of net cash used in continuing operations of $3.0 million
and net cash provided by discontinued operations of $2.5 million.

53

 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
L2 Capital Debt

On  January  31,  2018,  we  signed  a  promissory  note  in  the  aggregate  principal  amount  of  up  to  $0.84  million  (the  “L2  Note”)  for  an
aggregate purchase price of up to $0.75 million and issued warrants to purchase up to an aggregate of 68,257 shares of common stock (the
“Warrants”) at an exercise price of $3.31 per share. The maturity date was six months from date of funding. The L2 Note’s interest rate was
8% per year and a default interest rate of 18% per year. The L2 Note was able to be converted into common shares by the holder of the
Note at any time following an event of default. The conversion price of the L2 Note in the event of a default was equal to the product of (i)
0.70 multiplied by (ii) the lowest volume weighted average price, or VWAP, of our common stock during the 20-day trading period ending
in the Holder’s sole discretion on the last complete trading day prior to conversion, or, the conversion date.

On May 14, 2018, we closed on an underwritten public offering of units, consisting of convertible preferred stock and warrants, for gross
proceeds  of  $15.0  million.  Part  of  the  proceeds  from  this  offering  were  used  to  pay  off  the  outstanding  debt  with  L2  Capital.  The  total
payoff was $1.1 million, with $0.7 million in principal and $0.4 million in interest.

Hercules and MEF I, LP/Anson Investments Debt Exchange

On January 3, 2018, we entered into an Assignment Agreement (the “Assignment Agreement”) with MEF I, LP and Anson Investments
Master Fund (collectively the “Assignees” and each an “Assignee”), Hercules Technology III, L.P. (“HT III”) and Hercules Capital, Inc.
(“HC” and, together with HT III, “Hercules”), pursuant to which Hercules assigned to the Assignees all amounts remaining due under the
Loan and Security Agreement, dated June 30, 2014, as amended, between us and Hercules (the “Loan and Security Agreement”) and (2)
the note (the “Hercules Note”) between us and Hercules evidencing the amounts due under the Loan and Security Agreement. The total
amount  assigned  by  Hercules  to  the Assignees  in  the  aggregate  was  $2.3  million  and  was  secured  by  the  same  collateral  underlying  the
Loan and Security Agreement. Subsequently, we entered into an exchange agreement pursuant to which the Assignees agreed to exchange
the  Hercules  Term  Loan  obligation  acquired  by  them  for  two  senior  secured  convertible  promissory  notes  issued  by  us,  each  in  the
principal  amount  of  $1.1  million  for  an  aggregate  principal  amount  of  $2.2  million,  (the  “Exchange  Notes”).  The  Exchange  Notes  were
scheduled to mature on February 3, 2019 (the “Maturity Date”). The Exchange Notes had interest at a rate of 15% per annum. Prior to the
Maturity Date, principal and interest accrued under the Exchange Notes was payable in cash or, if certain conditions were met, payable in
shares  of  our  common  stock.  All  principal  accrued  under  the  Exchange  Notes  was  convertible  into  shares  of  our  common  stock
(“Conversion Shares”) at the election of the holders at any time at a fixed conversion price of $3.87 per share. Upon the occurrence of an
event  of  default,  the Assignees  were  entitled  to  convert  all  or  any  part  of  their  Exchange  Notes  at  a  conversion  price  (the  “Alternate
Conversion Price”) equal to 70% of the lowest traded price of our common stock during the ten trading days prior to the conversion date,
provided that (i) in no event was the Alternate Conversion Price less than $1.75 per share and (ii) the Assignees were not entitled to receive
more than 19.99% of the outstanding Common Stock. So long as these Exchange Notes remained outstanding or the Assignees held any
Conversion Shares, we were prohibited from entering into any financing transaction pursuant to which we sell our securities at a price lower
than  $1.75  per  share.  The  Exchange  Notes  were  secured  by  a  first  priority  security  interest  in  substantially  all  of  our  assets,  including
intellectual property, and contains covenants restricting payments to certain of our affiliates.

On May 14, 2018, we closed on an underwritten public offering of units, consisting of convertible preferred stock and warrants, for gross
proceeds of $15.0 million. Part of the proceeds from this offering were used to pay off the outstanding debt with MEF I, L.P and Anson
Investments. The total payoff was $1.6 million, with $1.4 million in principal and $0.2 million in interest.

North Stadium Term Loan – Related Party

On  July  28,  2017,  we  entered  into  a  $2.5  million  term  loan  (the  “North  Stadium  Loan”)  with  North  Stadium  Investments,  LLC  (“North
Stadium”), a company owned and controlled by our Chief Executive Officer and Chairman of the Board. The North Stadium Loan bore
interest  at  10%  per  annum  and  required  us  to  make  monthly  interest  only  payments  from  September  5,  2017  through  July  5,  2018. All
principal and unpaid interest (if any) under the North Stadium Loan was due and payable on July 28, 2018, which was later extended to
October 1, 2018. The North Stadium Loan was secured by substantially all of the assets of the Company and was junior to security interest
in assets encumbered by the Hercules Term Loan (see below). In connection with the North Stadium Loan we also issued North Stadium a
warrant to purchase up to 55,000 shares of our common stock at a purchase price of $5.04 per share, subject to a 5-year term. The relative
estimated value of the warrants on the date of grant approximated $0.2 million, which was being amortized as interest expense over the life
of the term loan.

54

 
 
 
 
 
 
 
 
 
 
On  October  1,  2018,  CTL  Medical  assumed  the  North  Stadium  Term  Loan  debt  as  part  of  the  sale  of  the  retail  spine  business. As  of
December 31, 2018, the Company has been released by North Stadium from any and all obligations related to this debt.

Hercules Term Loan

On June 30, 2014, we entered into a Loan and Security Agreement with Hercules which provided us with a $20.0 million term loan. The
Hercules  Term  Loan  matured  on  January  1,  2018.  The  Hercules  Term  Loan  included  a  $0.2  million  closing  fee,  which  was  paid  to
Hercules on the closing date of the loan. The closing fee was recorded as a debt discount and was being amortized to interest expense over
the life of the loan. The Hercules Term Loan also included a non-refundable final payment fee of $1.7 million. The final payment fee was
being accrued and recorded to interest expense over the life of the loan.

On  January  3,  2018,  the  Hercules  Term  Loan  and  all  amounts  owing  thereunder  was  assigned  to  MEF  I  and Anson  Investments.  See
discussion above for a more detailed description of that transaction

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements, as defined in Item 303(a)(4) of Regulation S-K.

Related-Party Transactions

For a description of our related-party transactions, see “Certain Relationships and Related Party Transactions” which will be contained in
our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual  Meeting  of  Stockholders  under  the  captions  “Certain  Relationships  and
Related Transactions” and “Director Independence”.

Seasonality and Backlog

Our business is generally not seasonal in nature. We derive our product revenue primarily from the sale of spinal fusion products, used in
the treatment of spine disorders, to CTL Medical, with whom we have a 10-year exclusive sales agreement in place. CTL Medical’s sales
generally consist of products that are in stock with them or maintained at hospitals or with their sales distributors. Accordingly, we do not
have a backlog of sales orders.

Critical Accounting Policies and Estimates

A  summary  of  our  significant  accounting  policies  and  estimates  is  discussed  in  Management’s  Discussion  and  Analysis  of  Financial
Condition and Results of Operations and in Note 1 to our consolidated financial statements included in our Annual Report on Form 10-K
for the year ended December 31, 2018. There have been no material changes to those policies for the year ended December 31, 2018. The
preparation of the consolidated financial statements in accordance with U.S. generally accepted accounting principles requires us to make
judgments, estimates and assumptions regarding uncertainties that affect the reported amounts of assets and liabilities. Significant areas of
uncertainty that require judgments, estimates and assumptions include the accounting for income taxes and other contingencies as well as
valuation of derivative liabilities, asset impairment and collectability of accounts receivable. We use historical and other information that
we  consider  to  be  relevant  to  make  these  judgments  and  estimates.  However,  actual  results  may  differ  from  those  estimates  and
assumptions that are used to prepare our consolidated financial statements.

Revenue Recognition

We derive our product revenue primarily from the sale of spinal fusion products, used in the treatment of spine disorders, to CTL Medical,
with whom we have a 10-year exclusive sales agreement in place. We are currently pursuing other sales opportunities for silicon nitride
outside  the  spinal  fusion  application.  We  generally  recognize  revenue  from  sales  at  the  time  the  product  is  shipped.  In  general,  our
customers do not have any rights of return or exchange.

Accounts Receivable and Allowance for Doubtful Accounts

Accounts  receivable  are  carried  at  invoiced  amount  less  an  allowance  for  doubtful  accounts.  On  a  regular  basis,  we  evaluate  accounts
receivable  and  estimate  an  allowance  for  doubtful  accounts,  as  needed,  based  on  various  factors  such  as  customers’  current  credit
conditions, length of time past due, and the general economy as a whole. Receivables are written off against the allowance when they are
deemed uncollectible.

55

 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
Inventories

Inventories are stated at the lower of cost or net realizable value, with cost for manufactured inventory determined under the standard costs,
which  approximate  actual  costs,  determined  on  the  first-in  first-out  (“FIFO”)  method.  Manufactured  inventory  consists  of  raw  material,
direct  labor  and  manufacturing  overhead  cost  components.  We  review  the  carrying  value  of  inventory  on  a  periodic  basis  for  excess  or
obsolete items, and records any write-down as a cost of revenue, as necessary.

Long-Lived Assets and Goodwill

We periodically evaluate the carrying value of definite-lived intangibles when events or changes in circumstances indicate that the carrying
value  may  not  be  recoverable.  Factors  we  consider  important  which  could  trigger  an  impairment  review  include,  but  are  not  limited  to,
significant  under-performance  relative  to  historical  or  projected  future  operating  results,  significant  changes  in  the  manner  of  its  use  of
acquired assets or its overall business strategy, and significant industry or economic trends. We amortize definite-lived intangible assets on
a  straight-line  basis  over  their  useful  lives.  We  recorded  no  impairment  loss  for  definite-lived  intangible  assets  during  the  year  ended
December 31, 2017. On October 1, 2018, our retail spine business was sold to CTL Medical, which included the sale of most intangible
assets that had a carrying value, retaining the carrying value of only one trademark asset.

When we determine that the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of the
above indicators, we determine the recoverability by comparing the carrying amount of the asset to net future undiscounted cash flows that
the asset is expected to generate and recognizes an impairment charge equal to the amount by which the carrying amount exceeds the fair
market value of the asset.

If our revenues or other estimated operating results are not achieved at or above our forecasted level, and we are unable to recover such
costs  through  price  increases,  the  carrying  value  of  certain  of  our  assets  may  prove  to  be  unrecoverable  and  we  may  incur  impairment
charges of definitive-live intangible assets.

In  accordance  with ASC  350,  Goodwill  and  Other  Intangible Assets,  goodwill  was  not  amortized  but  was  required  to  be  reviewed  for
impairment  at  least  annually  or  when  events  or  circumstances  indicate  that  carrying  value  may  exceed  fair  value. As  part  of  the  annual
review, we determined that circumstance and events indicated that goodwill needed to be completely impaired and did so during the third
quarter 2018.

Property and Equipment

Property  and  equipment,  including  leasehold  improvements,  are  stated  at  cost,  less  accumulated  depreciation  and  amortization.  Property
and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to five
years. Leasehold improvements are amortized over the shorter of their estimated useful lives or the related lease term, generally five years.

Periodically we review the carrying value of our property and equipment that are held and used in our operations for impairment whenever
events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of these assets is
determined based upon expected undiscounted future net cash flows from the operations to which the assets relate, utilizing management’s
best estimate, assumptions, and projections at the time. If the carrying value is determined to be unrecoverable from future operating cash
flows, the asset is deemed impaired and an impairment charge would be recognized to the extent the carrying value exceeded the estimated
fair value of the asset. We estimate the fair value of assets based on the estimated future discounted cash flows arising from the use of the
asset. No impairment was identified during the year ended December 31, 2018.

Income Taxes

We  recognize  deferred  tax  assets  and  liabilities  for  the  future  tax  consequences  attributable  to  the  differences  between  the  financial
statement  carrying  value  of  existing  assets  and  liabilities  and  their  respective  tax  bases.  Deferred  tax  assets  and  liabilities  are  measured
using enacted tax rates in effect for the fiscal year in which those temporary differences are expected to be recovered or settled. Valuation
allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.

56

 
 
 
 
 
 
 
 
 
 
 
 
 
 
We operate in various tax jurisdictions and is subject to audit by various tax authorities. We provide for tax contingencies whenever it is
deemed probable that a tax asset has been impaired, or a tax liability has been incurred for events such as tax claims or changes in tax laws.
Tax  contingencies  are  based  upon  their  technical  merits  relative  tax  law  and  the  specific  facts  and  circumstances  as  of  each  reporting
period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.

We recognize uncertain income tax positions taken on income tax returns at the largest amount that is more-likely than-not to be sustained
upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of
being sustained.

Our policy for recording interest and penalties associated with uncertain tax positions is to record such items as a component of our income
tax  provision.  For  the  years  ended  December  31,  2018  and  2017,  we  did  not  record  any  material  interest  income,  interest  expense  or
penalties related to uncertain tax positions or the settlement of audits for prior periods.

Stock-Based Compensation

We measure stock-based compensation expense related to employee stock-based awards based on the estimated fair value of the awards as
determined on the date of grant and is recognized as expense over the remaining requisite service period. We utilize the Black-Scholes-
Merton option pricing model to estimate the fair value of employee stock options. The Black-Scholes-Merton model requires the input of
highly subjective and complex assumptions, including the estimated fair value of our common stock on the date of grant, the expected term
of the stock option, and the expected volatility of our common stock over the period equal to the expected term of the grant. We estimate
forfeitures at the date of grant and revises the estimates, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
We  account  for  stock  options  to  purchase  shares  of  stock  that  are  issued  to  non-employees  based  on  the  estimated  fair  value  of  such
instruments  using  the  Black-Scholes-Merton  option  pricing  model.  The  measurement  of  stock-based  compensation  expense  for  these
instruments is variable and subject to periodic adjustments to the estimated fair value until the awards vest. Any resulting change in the
estimated fair value is recognized in our consolidated statements of operations during the period in which the related services are rendered.

Because we were a privately-held company with no trading history prior to February 2014 and have limited stock history since February
2014,  we  utilize  the  historical  stock  price  volatility  from  a  representative  group  of  public  companies  to  estimate  expected  stock  price
volatility and our historical stock price. We selected companies from the medical device industry, specifically those who are focused on the
design,  development  and  commercialization  of  products  for  the  treatment  of  spine  disorders,  and  who  have  similar  characteristics  to  us,
such  as  stage  of  life  cycle  and  size.  We  intend  to  continue  to  utilize  the  historical  volatility  of  the  same  or  similar  public  companies  to
estimate  expected  volatility  until  a  sufficient  amount  of  historical  information  regarding  the  price  of  our  publicly  traded  stock  becomes
available.  We  use  the  simplified  method  as  prescribed  by  the  Securities  and  Exchange  Commission  Staff Accounting  Bulletin  No.  107,
Share-based Payment, to calculate the expected term of stock option grants to employees as we do not have sufficient historical exercise
data to provide a reasonable basis upon which to estimate the expected term of stock options granted to employees. We utilize a dividend
yield of zero because we have never paid cash dividends and have no current intention to pay cash dividends. The risk-free rate of return
used for each grant is based on the U.S. Treasury yield curve in effect at the time of grant for instruments with a similar expected life.

We  account  for  stock  options  to  purchase  shares  of  stock  that  are  issued  to  non-employees  based  on  the  estimated  fair  value  of  such
instruments  using  the  Black-Scholes-Merton  option  pricing  model.  The  measurement  of  stock-based  compensation  expense  for  these
instruments is variable and subject to periodic adjustments to the estimated fair value until the awards vest. Any resulting change in the
estimated fair value is recognized in our consolidated statements of operations during the period in which the related services are rendered.

57

 
 
 
 
 
 
  
 
 
Derivative Liabilities

Derivative liabilities include the fair value of instruments such as common stock warrants, preferred stock warrants and convertible features
of notes, that are initially recorded at fair value and are required to be re-measured to fair value at each reporting period under provisions of
ASC  480, Distinguishing  Liabilities  from  Equity,  or ASC  815, Derivatives and Hedging.  The  change  in  fair  value  of  the  instruments  is
recognized as a component of other income (expense) in our consolidated statements of operations until the instruments settle, expire or are
no  longer  classified  as  derivative  liabilities.  We  estimate  the  fair  value  of  these  instruments  using  the  Black-Scholes-Merton  or  Monte-
Carlo valuation models depending on the complexity of the underlying instrument. The significant assumptions used in estimating the fair
value include the exercise price, volatility of the stock underlying the instrument, risk-free interest rate, estimated fair value of the stock
underlying the instrument and the estimated life of the instrument.

Accounting Pronouncement Adopted In 2018

In  March  2016,  the  FASB  updated  the  accounting  guidance  related  to  stock  compensation.  This  update  simplifies  the  accounting  for
employee  share-based  payment  transactions,  including  the  accounting  for  income  taxes,  forfeitures,  and  statutory  tax  withholding
requirements, as the well as classification in the statement of cash flows. The standard is effective for us with its annual period beginning
January 1, 2018. The adoption of this standard did not have a material impact on the consolidated financial statements.

New Accounting Pronouncement, Not Yet Adopted

In August 2016, the Financial Accounting Standards Board (“FASB”) updated accounting guidance on the following eight specific cash
flow classification issues: (1) debt prepayment or debt extinguishment costs; (2) settlement of zero-coupon debt instruments or other debt
instruments  with  coupon  interest  rates  that  are  insignificant  in  relation  to  the  effective  interest  rate  of  the  borrowing;  (3)  contingent
consideration  payments  made  after  a  business  combination;  (4)  proceeds  from  the  settlement  of  insurance  claims;  (5)  proceeds  from  the
settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; (6) distributions received from equity
method  investees;  (7)  beneficial  interests  in  securitization  transactions;  and  (8)  separately  identifiable  cash  flows  and  application  of  the
predominance principle. Current GAAP does not include specific guidance on these eight cash flow classification issues. These updates are
effective for us with its annual period beginning January 1, 2019, and interim periods therein, with early adoption permitted. The guidance
in this standard is not expected to have a material impact on the consolidated financial statements.

In February 2016, the FASB updated the accounting guidance related to leases as part of a joint project with the International Accounting
Standards Board (“IASB”) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities
on  the  balance  sheet  and  disclosing  key  information  about  leasing  arrangements.  Under  the  new  guidance,  a  lessee  will  be  required  to
recognize  assets  and  liabilities  for  capital  and  operating  leases  with  lease  terms  of  more  than  12  months. Additionally,  this  update  will
require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows
arising from leases, including qualitative and quantitative requirements. The standard is effective for us with its annual period beginning
January  1,  2020,  and  interim  periods  therein,  with  early  adoption  permitted.  We  are  currently  evaluating  the  potential  impact  this  new
standard may have on its consolidated financial statements.

In May 2014, in addition to several amendments issued during 2016, the FASB updated the accounting guidance related to revenue from
contracts with customers, which supersedes nearly all existing revenue recognition guidance under U.S. GAAP. The core principle is that a
company  should  recognize  revenue  when  promised  goods  or  services  are  transferred  to  customers  in  an  amount  that  reflects  the
consideration to which an entity expects to be entitled for those goods or services. The standard defines a five-step process to achieve this
core  principle  and,  in  doing  so,  more  judgment  and  estimates  may  be  required  within  the  revenue  recognition  process  than  are  required
under existing U.S. GAAP. The standard is effective for us with the annual period beginning January 1, 2019, and interim periods therein.
We believe the adoption of this standard will not have a significant impact on the consolidated financial statements.

58

 
 
 
 
 
 
 
 
 
 
We  have  reviewed  all  other  recently  issued,  but  not  yet  adopted,  accounting  standards,  in  order  to  determine  their  effects,  if  any,  on  its
results  of  operations,  financial  position  or  cash  flows.  Based  on  that  review,  we  believe  that  none  of  these  pronouncements  will  have  a
significant effect on its consolidated financial statements.

Jumpstart Our Business Startups Act of 2012

On April 5, 2012, the Jumpstart Our Business Startups Act of 2012, or JOBS Act, was enacted. Section 107 of the JOBS Act, provides that
an “emerging growth company” can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act of
1933, as amended, for complying with new or revised accounting standards. In other words, an “emerging growth company” can delay the
adoption of certain accounting standards until those standards would otherwise apply to private companies. We are electing to delay such
adoption  of  new  or  revised  accounting  standards,  and  as  a  result,  we  may  not  comply  with  new  or  revised  accounting  standards  on  the
relevant  dates  on  which  adoption  of  such  standards  is  required  for  non-emerging  growth  companies. As  a  result  of  this  election,  our
financial  statements  may  not  be  comparable  to  the  financial  statements  of  other  public  companies.  We  may  take  advantage  of  these
reporting exemptions until we are no longer an “emerging growth company.

We are in the process of evaluating the benefits of relying on other exemptions and reduced reporting requirements provided by the JOBS
Act.  Subject  to  certain  conditions  set  forth  in  the  JOBS Act,  as  an  “emerging  growth  company,”  we  intend  to  rely  on  certain  of  these
exemptions,  including  without  limitation,  (1)  providing  an  auditor’s  attestation  report  on  our  system  of  internal  controls  over  financial
reporting pursuant to Section 404(b) of the Sarbanes-Oxley Act and (2) complying with any requirement that may be adopted by the Public
Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional
information  about  the  audit  and  the  consolidated  financial  statements,  known  as  the  auditor  discussion  and  analysis.  We  may  be  able  to
remain an “emerging growth company” until the earliest of (a) the last day of the fiscal year in which we have total annual gross revenues
of $1 billion or more, (b) the last day of our fiscal year following the fifth anniversary of the date of our IPO, (c) the date on which we have
issued more than $1 billion in non-convertible debt during the previous three years or (d) the date on which we are deemed to be a large
accelerated filer under the rules of the SEC. Additionally, we are also currently a “smaller reporting company” as defined in the Securities
Exchange Act  of  1934,  and  in  the  event  that  we  are  still  considered  a  smaller  reporting  company  at  such  time  as  we  cease  being  an
emerging growth company, we will be exempt from the provisions of Section 404(b) of the Sarbanes-Oxley Act requiring that independent
registered public accounting firms provide an attestation report on the effectiveness of internal control over financial reporting.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Not applicable.

ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Financial Statements

The  consolidated  financial  statements  of  the  Company  appear  at  the  end  of  this Annual  Report  beginning  with  the  index  to  Financial
Statements on page F-1 (see Part IV, Item 15 “Financial Statements”), and are incorporated herein.

ITEM 9. C H A N G E S IN  AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND  FINANCIAL

DISCLOSURE

None.

59

 
 
 
 
  
 
 
 
 
 
 
 
 
ITEM 9A. CONTROLS AND PROCEDURES

(a) Disclosure Controls and Procedures

We maintain disclosure controls and procedures, as such term is defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act
of 1934 (the “Exchange Act”), that are designed to ensure that information required to be disclosed in the reports filed or submitted under
the  Exchange Act,  is  recorded,  processed,  summarized,  and  reported  within  the  time  periods  specified  by  the  Commission’s  rules  and
forms. Disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed in
our reports filed or submitted under the Exchange Act are properly recorded, processed, summarized and reported within the time periods
required by the Commission’s rules and forms.

We carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer
(principal executive officer and principal financial officer), of the effectiveness of the design and operation of these disclosure controls and
procedures,  as  such  term  is  defined  in  Exchange  Act  Rule  13a-15(e),  as  of  December  31,  2018.  Based  on  this  evaluation,  the  Chief
Executive Officer concluded that our disclosure controls and procedures were not effective as of December 31, 2018, the end of the period
covered by this Annual Report on Form 10-K due to the material weaknesses described below.

(b) Management’s Report on Internal Control over Financial Reporting

Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting as defined
in Rules 13a-15(f) and 15d-15(f) under the Exchange Act.

Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting
and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of
its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also,  projections  of  any
evaluation  of  effectiveness  of  internal  control  over  financial  reporting  to  future  periods  are  subject  to  the  risk  that  controls  may  become
inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Our  internal  control  over  financial  reporting  is  designed  to  provide  reasonable  assurance  of  achieving  its  objectives  as  specified  above.
Management  does  not  expect,  however,  that  our  internal  control  over  financial  reporting  will  prevent  or  detect  all  error  and  fraud. Any
control  system,  no  matter  how  well  designed  and  operated,  is  based  upon  certain  assumptions  and  can  provide  only  reasonable,  not
absolute, assurance that its objectives will be met. Further, no evaluation of controls can provide absolute assurance that misstatements due
to error or fraud will not occur or that all control issues and instances of fraud, if any, within the Company have been detected.

Management,  including  our  Chief  Executive  Officer,  has  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of
December  31,  2018.  In  making  our  assessment  of  the  effectiveness  of  internal  control  over  financial  reporting,  management  used  the
criteria set forth in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway
Commission (“COSO”).

As defined in SEC Regulation S-X, a material weakness is a deficiency, or combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a material misstatement of the Company’s annual or interim financial statements
will not be prevented or detected on a timely basis. Based on this assessment, management determined that, as of December 31, 2018, the
Company’s internal control over financial reporting was not effective due to the material weaknesses described below.

The  design  and  operating  effectiveness  of  our  controls  were  inadequate  to  ensure  that  complex  accounting  matters  are  always  properly
accounted for and reviewed in a timely manner, as outlined below:

Control Activities – The Company did not always have adequate control activities that were designed and operating effectively, including
timely  management  review  controls  and  controls  to  verify  the  completeness  and  adequacy  of  information  prior  to  presentation  of  the
information to the independent auditors.

Monitoring Activities – The Company did not always maintain effective monitoring controls related to the financial reporting process.

Our Chief Executive Officer continues with a review of our controls relating to complex accounting matters. Although our analysis is not
complete,  we  have  added  additional  resources  with  expertise  in  accounting  for  complex  accounting  matters.  We  are  also  considering
redesigning  controls  to  add  additional  layers  of  review  and  approval  whenever  entering  into  or  subsequently  converting,  exercising,
amending, repricing, exiting or otherwise experiencing changes in or to complex financial instruments.

Notwithstanding the identified material weaknesses, the Company believes the consolidated financial statements included in this Annual
Report on Form 10-K fairly represent in all material respects our financial condition, results of operations and cash flows at and for the
periods presented in accordance with accounting principles generally accepted in the United States of America.

(d) Changes in Internal Control Over Financial Reporting

Other than described above in the Item 9A. Controls and Procedures, there were no changes in our internal control over financial reporting
that  occurred  during  the  fourth  quarter  of  2018  that  have  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our  internal
control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
60

 
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

PART III

Certain  of  the  information  required  by  this  item  will  be  contained  in  our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual
Meeting  of  Stockholders,  under  the  captions  “Election  of  Directors,”  and  “Compliance  with  Section  16(a)  of  the  Exchange Act”  and  is
incorporated into this item by reference.

ITEM 11. EXECUTIVE COMPENSATION

The  information  required  by  this  item  will  be  contained  in  our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual  Meeting  of
Stockholders, under the captions “Executive Compensation”, and is incorporated into this item by reference.

ITEM 12. SECURITY OWNERSHIP  OF  CERTAIN  BENEFICIAL  OWNERS  AND  MANAGEMENT  AND  RELATED

STOCKHOLDER MATTERS

The  information  required  by  this  item  will  be  contained  in  our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual  Meeting  of
Stockholders, under the captions “Security Ownership of Certain Beneficial Owners and Management” and “Related Stockholder Matters”
and is incorporated into this item by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The  information  required  by  this  item  will  be  contained  in  our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual  Meeting  of
Stockholders under the captions “Certain Relationships and Related Transactions” and “Director Independence” and is incorporated into
this item by reference.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The  information  required  by  this  item  will  be  contained  in  our  definitive  Proxy  Statement  with  respect  to  our  2019 Annual  Meeting  of
Stockholders, under the caption “Principal Accountant Fees and Services” and is incorporated into this item by reference.

61

 
 
 
 
 
 
 
 
 
 
 
 
 
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

Reference is made to the Index to Consolidated Financial Statements beginning on Page F-1 hereof.

PART IV

(1) Financial Statements.  The  following  consolidated  financial  statements  and  the  notes  thereto,  and  the  Report  of  Independent

Registered Public Accounting Firm are incorporated by reference as provided in Item 8 of this report:

Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets at December 31, 2018 and 2017
Consolidated Statements of Operations for the Years Ended December 31, 2018 and 2017
Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2018 and 2017
Consolidated Statements of Cash Flows for the Years Ended December 31, 2018 and 2017
Notes to Consolidated Financial Statements

F-2
F-3
F-4
F-5
F-6
F-7

(2) Consolidated Financial Statement Schedules

Consolidated  Financial  Statement  Schedules  have  been  omitted  because  they  are  either  not  required  or  not  applicable,  or  because  the
information required to be presented is included in the consolidated financial statements or the notes thereto included in this Annual Report.

(3) Exhibits

The exhibits listed on the accompanying Exhibit Index are filed or incorporated by reference as part of this Annual Report and such Exhibit
Index is incorporated by reference.

Exhibit
Number

Exhibit Description

3.1

Restated Certificate of Incorporation of the Registrant

3.1.1

3.1.2

Certificate of Amendment to the Restated Certificate of
Incorporation of SINTX Corporation

Certificate of Amendment to the Restated Certificate of
Incorporation of SINTX Corporation

3.1.3

Certificate of Designation of Series B Preferred Stock

3.2

4.1

4.2

4.3

Restated Bylaws of the Registrant

Form of Common Stock Certificate of the Registrant

Warrant to Purchase Shares of Series F Convertible
Preferred Stock by and between the Registrant and GE
Capital Equity Investments, Inc., dated as of December
17, 2012

Warrant to Purchase Shares of Series F Convertible
Preferred Stock by and between the Registrant and
Zions First National Bank, dated as of December 17,
2012

62

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

Form 8-K (Exhibit
3.1)

Form 8-K (Exhibit
3.1)

Form 8-K (Exhibit
3.1)

Form 8-K
(Exhibit 3.1)

Form 8-K (Exhibit
3.1)

Amendment No. 3 to
Form S-1 (Exhibit
4.1)

  Filing Date  

SEC
File/Reg.
Number

2/20/14

001-33624

1/22/16

001-33624

11/16/17

001-33624

5/15/18

001-33624

2/20/14

001-33624

1/29/14

333-192232

Form S-1 (Exhibit
4.10)

11/8/13

333-192232

Form S-1 (Exhibit
4.11)

11/8/13

333-192232

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

Exhibit Description

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

4.4

4.5

4.6

4.7

4.8

4.9

Hercules Warrant to Purchase Common Stock

Form of Warrant to be Issued to Investors in the
Offering

Form of Unit Purchase Option to be Issued to the
Underwriters in the Offering

Form of Warrant Agent Agreement by and between the
Registrant and American Stock Transfer and Trust
Company

Form of Warrant to Purchase Shares of Common Stock
of the Registrant issued on September 17, 2014.

Form of Warrant to Purchase Shares of Common Stock
of the Registrant issued on November 12, 2014.

4.10

Form of Amended and Restated Series A warrant

4.11

Form of Common Stock Purchase Warrant issued on
April 4, 2016.

4.12

Form of Series E Warrant

4.13

Form of Underwriters Warrant Issued in 2016 Offering

4.14

Form of Warrant

4.15

Secured Promissory Note with North Stadium
Investments, LLC

63

Form 8-K (Exhibit
4.3)

Amendment No. 3
to Form S-1 (Exhibit
4.24)

Amendment No. 3
to Form S-1 (Exhibit
4.25)

Amendment No. 3
to Form S-1 (Exhibit
4.26)

Form 10-K (Exhibit
4.27)

Form 10-K (Exhibit
4.28)

Form 8-K (Exhibit
4.1)

Form 8-K (Exhibit
4.1)

Amendment No. 3 to
Form S-1 (Exhibit
4.25)

Amendment No. 3 to
Form S-1 (Exhibit
4.26)

Form 8-K (Exhibit
4.1)

Form 8-K (Exhibit
4.1)

  Filing Date  

SEC
File/Reg.
Number

7/1/2014

001-33624

11/20/14

333-199753

11/20/14

333-199753

11/19/14

333-199753

3/24/15

001-33624

3/24/15

001-33624

12/14/15

001-33624

4/05/16

001-33624

6/30/16

333-211520

6/30/16

333-211520

1/20/17

001-33624

8/3/17

001-33624

 
 
 
 
 
 
   
   
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

4.16

Exhibit Description

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

North Stadium Investments, LLC Warrant to Purchase
Common Stock

Form 8-K (Exhibit
4.2)

4.17

Form of Warrant Issued to Karl Kipke

4.18

Form of Series F Common Stock Purchase Warrant

4.19

Common Stock Warrant

4.20

Form of Warrant Agency Agreement between Amedica
Corporation and American Stock Transfer and Trust
Company, LLC

4.21

Form of Warrant to be Issued to the Underwriters

4.22

4.23

10.1

10.2

10.3

Westlake Securities LLC Common Stock Purchase
Warrant

Form of Common Stock Purchase Warrant Issued on
September 11, 2015

Loan and Security Agreement by and among the
Registrant, its subsidiary, Hercules Technology Growth
Capital, Inc., and Hercules Technology III, L.P., dated
as of June 30, 2014

Centrepointe Business Park Lease Agreement Net by
and between the Registrant and Centrepointe Properties,
LLC, dated as of April 21, 2009

First Addendum to Centrepointe Business Park Lease
Agreement Net by and between the Registrant and
Centrepointe Properties, LLC, dated as of January 31,
2012

10.4

Form of Change of Control Agreement*

10.5

10.6

10.7

10.8

Form of Indemnification Agreement by and between the
Registrant and its officers and directors

SINTX Technologies Amended and Restated 2012
Equity Incentive Plan*

Form of 2012 Stock Option Grant Notice and Stock
Option Agreement*

Form of 2012 Restricted Stock Award and Restricted
Stock Unit Agreement*

10.9

SINTX Technologies 2003 Stock Option Plan*

10.10

Form of 2003 Non-Qualified Stock Option Agreement
and Notice of Exercise of Non-Qualified Stock Option
thereunder*

  Filing Date  

SEC
File/Reg.
Number

8/3/17

001-33624

4/26/18

333-223032

4/26/18

333-223032

5/15/18

001-33624

4/26/18

333-223032

5/1/18

333-223032

333-223032

4/26/18

9/18/15

001-33624

Form S-1
(Exhibit 4.25)

Form S-1
(Exhibit 4.26)

Form 8-K
(Exhibit 3.2)

Form S-1
(Exhibit 4.28)

Form S-1
(Exhibit 4.29)

Form S-1
(Exhibit 4.30)

Form 8-K
(Exhibit 4.1)

Form 8-K (Exhibit
10.3)

7/1/2014

001-33624

Form S-1 (Exhibit
10.10)

Form S-1 (Exhibit
10.11)

Form 8-K (Exhibit
10.1)

Amendment No. 2
to Form S-1 (Exhibit
10.14)

Amendment No. 4
to Form S-1 (Exhibit
10.15)

Amendment No. 4
to Form S-1 (Exhibit
10.16)

Amendment No. 4
to Form S-1 (Exhibit
10.17)

Form S-1 (Exhibit
10.18)

Form S-1 (Exhibit
10.19)

11/8/13

333-192232

11/8/13

333-192232

7/22/15

001-33624

12/20/13

333-192232

2/12/14

333-192232

2/12/14

333-192232

2/12/14

333-192232

11/8/13

333-192232

11/8/13

333-192232

 
 
 
 
 
 
   
   
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
64

 
Exhibit
Number

Exhibit Description

10.11

10.12

10.13

10.14

10.15

10.16

10.17

Form of 2003 Incentive Stock Option Agreement and
Notice of Exercise of Incentive Stock Option
thereunder*

Consent and First Amendment to Loan and Security
Agreement dated September 8, 2015 by and among
Hercules Technology Growth Capital Inc., the financial
institutions signatory thereto, SINTX Corporation, and
the guarantors signatory thereto.

First Amendment to Warrant to Purchase Shares of
Common Stock of SINTX Corporation dated September
8, 2015, by and between SINTX Corporation and
Hercules Technology III, L.P.

Form of Securities Purchase Agreement between SINTX
Technologies and the Purchasers Dated September 8,
2015

Exchange Agreement dated April 4, 2016, by and
among SINTX Corporation and Riverside Merchant
Partners, LLC

Warrant Agency Agreement, dated July 8, 2016, by and
between SINTX Corporation and American Stock
Transfer & Trust Company, LLC

Warrant Agency Agreement dated January 24, 2017, by
and between SINTX Corporation and American Stock
Transfer & Trust Company, LLC

10.18

Security Agreement, dated July 28, 2017

65

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

  Filing Date  

SEC
File/Reg.
Number

Form S-1 (Exhibit
10.20)

Form 8-K (Exhibit
10.1)

11/8/13

333-192232

9/8/15

001-33624

Form 8-K (Exhibit
10.2)

9/8/15

001-33624

Form 8-K (Exhibit
10.5)

Form 8-K (Exhibit
10.2)

Form 8-K (Exhibit
10.1)

9/8/15

001-33624

5/05/16

001-33624

7/8/16

001-33624

Form 8-K (Exhibit 8-
K)

1/24/17

001-33624

Form 8-K (Exhibit
10.1)

8/3/17

001-33624

 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
Exhibit Description

Assignment Agreement, dated January 3, 2018, by and
among the Company, US Spine, Inc., MEF I, L.P.,
Anson Investments Master Fund LP, Hercules
Technology III, L.P. and Hercules Capital, Inc.

Exchange Agreement, dated January 3, 2018, by and
among SINTX Corporation and MEF I, L.P.

Exchange Agreement, dated January 3, 2018, by and
among Amedica Corporation and Anson Investments
Master Fund LP

Senior Secured Convertible Promissory Note, dated
January 3, 2018, by and among Amedica Corporation
and MEF I, L.P.

Senior Secured Convertible Promissory Note, dated
January 3, 2018, by and among Amedica Corporation
and Anson Investments

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

  Filing Date  

SEC
File/Reg.
Number

Form 8-K (Exhibit
10.1)

1/4/18

001-33624

Form 8-K (Exhibit
10.2)

Form 8-K (Exhibit
10.3)

Form 8-K (Exhibit
10.4)

Form 8-K (Exhibit
10.5)

1/4/18

001-33624

1/4/18

001-33624

1/4/18

001-33624

1/4/18

001-33624

  Securities Purchase Agreement, dated January 30, 2018,
by and among the Company and L2 Capital, LLC.

  Form 8-K (Exhibit
10.1)

2/1/18

  001-33624

Exhibit
Number

10.19

10.20

10.21

10.22

10.23

10.24

10.25

Amended and Restated Promissory Note payable to L2
Capital

10.26

Form of Warrant Amendment Agreement

66

Form S-1
(Exhibit 10.25)

Form S-1
(Exhibit 10.26)

4/26/18

333-223032

4/26/18

333-223032

 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
Exhibit
Number

Exhibit Description

16

Letter of BDO, dated September 22, 2017

21.1

List of Subsidiaries of the Registrant

Filed with
this
Report

Incorporated by
Reference herein
from
Form or Schedule

Form 8-K
(Exhibit 16.1)

Form S-1 (Exhibit
21.1)

  Filing Date  

SEC
File/Reg.
Number

9/22/17

001-33624

11/8/13

333-192232

23.1

31.1

31.2

32

Consent of Independent Registered Public Accounting
Firm, Tanner LLC

  Certification of Chief Executive Officer

  Certification of Principal Financial Officer

Certification pursuant to Section 906 of the Sarbanes
Oxley Act of 2002

101 SCH

 XBRL Taxonomy Extension Schema Document (A)

101.CAL

XBRL Taxonomy Extension Calculation Linkbase
Document (A)

101.DEF

XBRL Taxonomy Extension Definition Linkbase
Document (A)

101.LAB

XBRL Taxonomy Extension Label Linkbase Document
(A)

101.PRE

XBRL Taxonomy Extension Presentation Linkbase
Document (A)

X

X

X

X

X

X

X

X

X

*

(A)

Management contract of compensatory plan or arrangement

XBRL (EXTENSIBLE BUSINESS REPORTING LANGUAGE) information is furnished and not filed for purposes of Section
11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.

ITEM 16. 10-K Summary

None.

67

 
 
 
 
 
 
   
   
   
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 8, 2019

SINTX Technologies, Inc.

/s/ B. Sonny Bal
B. Sonny Bal
Chief Executive Officer
(Principal Executive Officer and Principal Financial Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf
of the registrant and in the capacities and on the dates indicated.

Date: March 8, 2019

Date: March 8, 2019

Date: March 8, 2019

Date: March 8, 2019

/s/ B. Sonny Bal
B. Sonny Bal, M.D., Director

/s/ David W. Truetzel
David W. Truetzel, Director

/s/ Jeffrey S. White
Jeffrey S. White, Director

/s/ Eric A. Stookey
Eric A. Stookey, Director

68

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SINTX TECHNOLOGIES, INC.
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

As of and For the Years ended December 31, 2018 and 2017
Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

F-1

F-2
F-3
F-4
F-5
F-6
F-7

 
 
 
 
Report of Independent Registered Public Accounting Firm

Board of Directors and Stockholders of
SINTX Technologies, Inc. (previously known as Amedica Corporation)
Salt Lake City, Utah

Opinion on the Consolidated Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  SINTX  Technologies,  Inc.  and  subsidiaries  (the  “Company”)  as  of
December 31, 2018 and 2017 and the related consolidated statements of operations, stockholders’ equity, and cash flows for the year then
ended,  and  the  related  notes  (collectively  referred  to  as  the  “financial  statements”).  In  our  opinion,  the  financial  statements  referred  to
above  present  fairly,  in  all  material  respects,  the  financial  position  of  the  Company  as  of  December  31,  2018,  and  the  results  of  its
operations and its cash flows for the years then ended, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an  opinion  on  the
Company’s  financial  statements  based  on  our  audits.  We  are  a  public  accounting  firm  registered  with  the  Public  Company Accounting
Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Company in accordance with the U.S.
federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to
obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The
Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our
audits  we  are  required  to  obtain  an  understanding  of  internal  control  over  financial  reporting  but  not  for  the  purpose  of  expressing  an
opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, due to error or fraud, and
performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts
and  disclosures  in  the  financial  statements.  Our  audits  also  included  evaluating  the  accounting  principles  used  and  significant  estimates
made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits
provide a reasonable basis for our opinion.

Other Matter

The financial statements have been prepared assuming that the Company will continue as a going concern. As discussed in Note 1 to the
financial statements, the Company has recurring losses from operations and negative operating cash flows and needs to obtain additional
financing to finance its operations. These issues raise substantial doubt about its ability to continue as a going concern. Management’s plans
in regard to these matters are also described in Note 1. The financial statements do not include any adjustments that might result from the
outcome of this uncertainty.

/s/ TANNER LLC

We have served as the Company’s auditors since 2017

Date: March 8, 2019
Salt Lake City, Utah

F-2

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SINTX Technologies, Inc.
(previously known as Amedica Corporation)
Consolidated Balance Sheets
(in thousands, except share and per share data)

Assets
Current assets:

Cash and cash equivalents
Trade accounts receivable, net of allowance of $56 and $63, respectively
Prepaid expenses and other current assets
Inventories
Notes receivable, current portion
Current assets held for sale

Total current assets

Inventories, net
Property and equipment, net
Intangible assets, net
Goodwill
Long-term note receivable, net of current portion
Other long-term assets
Long-term assets held for sale
Long-term intangible assets held for sale
Total assets

Liabilities and Stockholders’ Equity
Current liabilities:

Accounts payable
Accrued liabilities
Debt
Derivative liabilities, current portion
Deferred rent, current portion
Other current liabilities
Current liabilities held for sale

Total current liabilities

Deferred rent
Derivative liabilities, net of current portion
Other long-term liabilities
Total liabilities

  $

  $

  $

As of December 31,

2018

2017

5,447    $
263   
171   
52   
1,084   
-   
7,017   

624   
124   
46   
-   
3,669   
35   
-   
-   
11,515    $

301    $
838   
-   
1,062   
169   
10   
-   
2,380   

-   
504   
232   
3,116   

539 
1,240 
190 
117 
- 
1,585 
3,671 

675 
218 
- 
6,163 
- 
35 
1,228 
2,651 
14,641 

1,732 
2,682 
605 
896 
- 
- 
2,356 
8,271 

179 
461 
288 
9,199 

Commitments and contingencies
Stockholders’ equity:
Convertible preferred stock, $0.01 par value, 130,000,000 shares authorized; 4,074 and 0 shares
issued and outstanding at December 31, 2018 and 2017, respectively.
Common stock, $0.01 par value, 250,000,000 shares authorized; 21,793,641 and 3,028,065
shares issued and outstanding at December 31, 2018 and 2017, respectively.

Additional paid-in capital
Accumulated deficit
Total stockholders’ equity
Total liabilities and stockholders’ equity

-   

218   

237,462   
(229,281)  
8,399   
11,515    $

- 

30 

226,041 
(220,629)
5,442 
14,641 

  $

The accompanying notes are an integral part of these consolidated financial statements.

F-3

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SINTX Technologies, Inc.
(previously known as Amedica Corporation)
Consolidated Statements of Operations
(in thousands, except share and per share data)

Product revenue
Costs of revenue
Gross profit
Operating expenses:

Research and development
General and administrative
Sales and marketing
Goodwill impairment
Total operating expenses
Loss from operations
Other income (expenses):

Interest expense
Offering costs
Change in fair value of derivative liabilities
Loss on extinguishment of debt
Loss on extinguishment of derivative liabilities
Other income

Total other income (expense), net
Net loss before income taxes
Provision for income taxes
Loss from continuing operations
Loss from discontinued operations
Gain from disposal of discontinued operations
Net loss
Deemed dividend related to beneficial conversion feature and accretion of discount on
convertible Series A preferred stock
Net loss attributable to common stockholders

Net loss per share – basic and diluted
Basic – continuing operations
Basic – discontinued operations
Basic – gain from sale of discontinued operations
Basic – deemed dividend and accretion of a discount on conversion of Series B preferred
stock
Basic – attributable to common stockholders

Diluted – continuing operations
Diluted – discontinued operations
Diluted – gain from sale of discontinued operations
Diluted – deemed dividend and accretion of a discount on conversion of Series B preferred
stock
Diluted – attributable to common stockholders

  $

  $

  $

  $

Weighted average common shares outstanding:

Basic
Diluted

The accompanying notes are an integral part of these consolidated financial statements.

F-4

Year Ended December 31,
2017
2018

  $

95    $
56   
39   

- 
- 
- 

3,506 
3,654 
325 
- 
7,485 
(7,485)

(1,263)
(131)
3,118 
- 
- 
- 
1,724 
(5,761)
- 
(5,761)
(3,568)
- 
(9,329)

-
(9,329)

(1.93)
(1.20)
- 

-
(3.13)

- 
- 
- 

-
- 

2,991   
3,866   
135   
6,163   
13,155   
(13,116)  

(1,388)  
(682)  
7,005   
(339)  
(1,252)  
83   
3,427   
(9,689)  
-   
(9,689)  
(324)  
1,361   
(8,652)  

(13,900)
(22,552)   $

(0.88)   $
(0.03)  
0.12   

(1.27)
(2.06)   $

(1.44)  
(0.03)  
0.12   

(1.21)
(2.56)   $

10,938,047   
11,515,638   

2,978,904 
- 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
SINTX Technologies, Inc.
(previously known as Amedica Corporation)
Consolidated Statements of Stockholders’ Equity
(in thousands, except share data)

Balance at December 31, 2016
Issuance of common stock with offering,
net of issuance costs
Round-up common shares issued in
association with reverse stock split
Stock-based compensation
Warrants issued in association with debt
Net loss
Balance at December 31, 2017
Issuance of common stock upon exercise of
warrants
Issuance of common stock from the
reduction in debt
Issuance of preferred stock from offering,
net of issuance costs
Issuance of common stock due to
conversion of preferred stock
Loss on extinguishment of derivative
liability
Warrants issued in association with debt
Deemed dividend related to adjustment of
the exercise price of warrants issued with
debt
Accretion of change in warrant exercise
price
Accretion of convertible preferred stock
discount

Deemed dividend related to the issuance of
preferred stock
Extinguishment of derivative liability
Stock-based compensation
Net loss
Balance at December 31, 2018

  Preferred Stock    
  Shares     Amount    
     -   
-    $

-

-
-   
-   
-   
-   

-

-   

15,000

(10,926)

-
-   

-

-

-

-
-   
-   
-   

  4,074    $

-

-
-   
-   
-   
-   

-

-   

-

-

-
-   

-

-

-

-
-   
-   
-   
-   

Common Stock

Shares

    Amount  

  Paid-In  
  Capital  
22    $222,513    $

  Accumulated  
Deficit

  Total
  Equity  
(211,300)   $ 11,235 

  2,280,407    $

741,667

8

3,120

-

3,128

5,991

-   
-   
-   
  3,028,065   

-
-   
-   
-   
30   

-
219   
189   
-   
  226,041   

-
-   
-   
(9,329)  
(220,629)  

-
219 
189 
(9,329)
5,442 

1,652

1,453 

6,749

-

1,040
98 

(9)

9

13,900

-

-   

-

-

-
-   

-

-

-

-
-   
-   
(8,652)  

(13,900)
575 
42 
(8,652)
(229,281 )  $ 8,399 

1,086,159

11

1,641

580,444   

6   

1,447   

-

-

6,749

17,098,973

171

(171)

-
-   

-

-

-

-
-   
-   
-   

-
-   

1,040

98   

-

-

-

-
-   
-   
-   

(9)

9

13,900

(13,900)
575   
42   
-   

 21,793,641    $

218    $237,462    $

The accompanying notes are an integral part of these consolidated financial statements.

F-5

 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
 
 
   
 
   
 
   
 
 
 
   
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
 
 
   
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
 
 
 
   
 
   
 
   
 
   
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SINTX Technologies, Inc.
(previously known as Amedica Corporation)
Consolidated Statements of Cash Flow
(in thousands)

Cash flow from operating activities
Net loss from continuing operations
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation expense
Amortization of intangible assets
Amortization of lease incentive for tenant improvements
Non-cash interest income
Non-cash interest expense
Loss on extinguishment of debt
Stock based compensation
Change in fair value of derivative liabilities
Loss on extinguishment of derivative liabilities
Offering costs
Loss on impairment of goodwill

Changes in operating assets and liabilities:
Trade accounts receivable
Prepaid expenses and other current assets
Inventories
Accounts payable and accrued liabilities

Net cash used in operating activities – continuing operations
Cash loss on sale – discontinued operations
Net cash provided by operating activities – discontinued operations
Net cash used in operating activities
Cash flows from investing activities
Purchase of property and equipment
Purchase of intangible asset
Net cash used in investing activities – continuing operations
Net cash used in investing activities – discontinued operations
Net cash used in investing activities
Cash flows from financing activities
Proceeds from issuance of warrant derivative liability, net of issuance costs ($682 and $131)
Proceeds from issuance of preferred stock, net of issuance costs ($668)
Proceeds from issuance of common stock, net of issuance costs ($601)
Proceeds from exercise of warrants, net of fees
Proceeds from issuance of debt
Payments on debt
Net cash provided by (used in) financing activities – continuing operations
Net cash provided by financing activities – discontinued operations
Net cash provided by (used in) financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year

Noncash investing and financing activities
Debt exchange
Payment of debt with common stock
Extinguishment of derivative liabilities through exercise of warrants
Warrants issued in association with debt
Debt discount from warrants issued with debt
Supplemental cash flow information

Cash paid for interest

The accompanying notes are an integral part of these consolidated financial statements.

F-6

Year Ended December 31,
2017
2018

  $

(9,689)   $

105   
4   
-   
(86)  
956   
339   
42   
(7,005)  
1,252   
-   
6,163   

(139)  
19   
(8)  
(1,281)  
(9,328)  
(695)  
675   
(9,348)  

(11)  
(50)  
(61)  
(84)  
(145)  

7,577   
6,749   
-   
1,652   
705   
(2,282)  
14,401   
-   
14,401   
4,908   
539   
5,447    $

Year Ended December 31,
2017
2018

2,265    $
1,453   
565   
98   
-   

  $

  $

  $

426    $

(5,761)

105 
- 
20 
- 
726 
- 
219 
(3,118)
- 
131 
- 

- 
48 
- 
503 
(7,127)
- 
2,447 
(4,680)

(6)
- 
(6)
(1,131)
(1,137)

679 
- 
3,128 
- 
- 
(6,816)
(3,009)
2,450 
(559)
(6,376)
6,915 
539 

- 
- 
- 
- 
189 

442 

 
 
 
 
 
 
 
 
   
 
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
1. Organization and Summary of Significant Accounting Policies

SINTX  Technologies,  Inc.  (“SINTX”  or  “the  Company”)  was  incorporated  in  the  state  of  Delaware  on  December  10,  1996  (and  was
previously  known  as  Amedica  Corporation).  SINTX  is  a  commercial-stage  biomaterial  company  focused  on  using  its  silicon  nitride
technology platform to develop, manufacture, and commercialize a broad range of medical devices. The Company believes it is the first and
only manufacturer to use silicon nitride in medical applications. The Company acquired US Spine, Inc. (“US Spine”), a Delaware spinal
products corporation with operations in Florida, on September 20, 2010. The Company’s products are primarily sold in the United States.

As  further  explained  in  Note  14,  On  October  1,  2018,  the  Company  completed  the  sale  of  its  retail  spine  business  to  CTL  Medical,  a
Dallas,  Texas-based  privately  held  medical  device  manufacturer. As  a  result  of  the  sale,  CTL  Medical  is  now  the  exclusive  owner  of
Amedica’s portfolio of metal and silicon nitride spine products, which are presently sold under the brand names of Taurus, Preference, and
Valeo, with access to future silicon nitride spine technologies. Manufacturing, R&D, and all intellectual property related to the core, non-
spine, biomaterial technology of silicon nitride remains with the Company. The Company will serve as CTL’s exclusive OEM provider of
silicon nitride products.

On October 30, 2018, the Company amended its Certificate of Incorporation with the State of Delaware to change its corporate name to
SINTX Technologies, Inc. in order to better reflect its focus on silicon nitride science and technologies and pipeline of silicon nitride-based
products in various biomedical applications. The Company also changed its trading symbol on the NASDAQ Capital Market to “SINT”.

The previous name, Amedica, has transferred to CTL Medical, which is now CTL-Amedica. The Company’s new corporate brand reflects
both the Company’s core competence in the science and production of silicon nitride ceramics, as well as encouraging prospects for the
future, as an OEM supplier of spine implants to CTL-Amedica, and several opportunities outside of spine. As SINTX Technologies Inc.,
the Company will focus on developing silicon nitride in terms of product design, and future biomaterial formulations, for a variety of OEM
customers.

Basis of Presentation and Principles of Consolidation

These consolidated financial statements have been prepared by management in accordance with accounting principles generally accepted in
the  United  States  (“U.S.  GAAP”)  and  include  all  assets,  liabilities  and  operations  of  the  Company  and  its  wholly-owned  subsidiary,  US
Spine. All material intercompany transactions and balances have been eliminated in consolidation.

Liquidity and Capital Resources

The  consolidated  financial  statements  have  been  prepared  assuming  the  Company  will  continue  to  operate  as  a  going  concern,  which
contemplates the realization of assets and settlement of liabilities in the normal course of business, and does not include any adjustments to
reflect the possible future effects on the recoverability and classification of assets or the amounts and classifications of liabilities that may
result from uncertainty related to its ability to continue as a going concern within one year from the date of issuance of these consolidated
financial statements.

For the years ended December 31, 2018 and 2017, the Company incurred a net loss of $8.7 million and $9.3 million, respectively, and used
cash in operations of $9.3 million and $4.7 million, respectively. The Company had an accumulated deficit of $229.3 million and $220.6
million as of December 31, 2018 and 2017, respectively. To date, the Company’s operations have been principally financed from proceeds
from the issuance of preferred and common stock, convertible debt and bank debt and, to a lesser extent, cash generated from product sales.
It is anticipated that the Company will continue to generate operating losses and use cash in operations. The Company’s continuation as a
going  concern  is  dependent  upon  its  ability  to  increase  sales,  implement  cost  saving  measures  and/or  raise  additional  funds  through  the
capital  markets.  Whether  and  when  the  Company  can  attain  profitability  and  positive  cash  flows  from  operations  or  obtain  additional
financing is uncertain.

In  2016,  the  Company  implemented  certain  cost  saving  measures,  including  workforce  and  office  space  reductions,  and  continued  to
evaluate  additional  cost  savings  alternatives  during  2017  and  2018.  These  additional  cost  savings  measures  may  include  additional
workforce  and  research  and  development  reductions,  as  well  as  cuts  to  certain  other  operating  expenses.  The  Company  is  actively
generating additional scientific and clinical data to have it published in leading industry publications. The unique features of our silicon
nitride material are not well known, and we believe the publication of such data would help sales efforts as the Company approaches new
prospects. The Company is also making additional changes to the sales strategy, including a focus on revenue growth by expanding the use
of silicon nitride in other areas outside of spinal fusion applications.

The Company has common stock that is publicly traded and has been able to successfully raise capital when needed since the date of the
Company’s initial public offering. In March 2018, the Company closed on gross proceeds of $1.4 million, before payment of placement
agent fees and costs on a warrant reprice and exercise transaction (see Note 8). Additionally, on May 14, 2018, the Company closed on a
public  offering  of  units,  consisting  of  convertible  preferred  stock  and  warrants,  for  gross  proceeds  of  $15  million,  which  excludes
underwriting  discounts  and  commissions  and  offering  expenses  payable  by  the  Company.  The  Company  is  engaged  in  discussions  with
investment  and  banking  firms  to  examine  financing  alternatives,  including  options  for  a  public  offering  of  the  Company’s  preferred  or
common  stock.  On  October  1,  2018,  the  Company  sold  the  retail  spine  business.  This  sale  will  provide  cash  flows  totaling  $2.5  million
over  the  next  eighteen  months  (See  Notes  13  and  14)  and  $3.5  million  for  the  following  eighteen  months.  The  buyer  also  assumed  the
Company’s $2.5 million related party note payable.

Although the Company is seeking to obtain additional equity and/or debt financing, such funding is not assured and may not be available to
the Company on favorable or acceptable terms and may involve significant restrictive covenants. Any additional equity financing is also
not assured and, if available to the Company, will most likely be dilutive to its current stockholders. If the Company is not able to obtain
additional debt or equity financing on a timely basis, the impact on the Company will be material and adverse.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
F-7

These uncertainties create substantial doubt about our ability to continue as a going concern. The consolidated financial statements do not
include any adjustments that might result from the outcome of these uncertainties.

Reverse Stock Split

On  November  10,  2017,  the  Company  effected  a  1  for  12  reverse  stock  split  of  the  Company’s  common  stock.  The  par  value  and  the
authorized shares of the common and convertible preferred stock were not adjusted as a result of the reverse stock split. All common stock
share  and  per-share  amounts  for  all  periods  presented  in  these  consolidated  financial  statements  prior  to  November  10,  2017  have  been
adjusted retroactively to reflect the reverse stock split.

Use of Estimates

The  preparation  of  consolidated  financial  statements  in  conformity  with  U.S.  GAAP  requires  management  to  make  estimates  and
assumptions  that  affect  the  reported  amounts  of  assets  and  liabilities  and  disclosure  of  contingent  assets  and  liabilities  at  the  date  of  the
consolidated  financial  statements  and  the  reported  amounts  of  revenue  and  expenses  during  the  period. Actual  results  could  differ  from
those estimates. As of December 31, 2018, the most significant estimate relates to derivative liabilities.

Concentrations of Credit Risk and Significant Customers

Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents,
marketable securities and accounts receivable. Because the financial institution that the Company currently uses does not participate in the
Certificate of Deposit Account Registry Service (“CDARS”), the Company does not presently have a program to limit its exposure to credit
loss. The Company’s deposits, at times, may exceed federally insured limits.

At  December  31,  2018,  one  customer  receivable  balance  was  51%  of  the  Company’s  total  trade  accounts  receivable  from  continuing
operations. One customer accounted for 100% of the Company’s total revenues from continuing operations for the year ended December
31, 2018.

Revenue Recognition

The Company derives its product revenue primarily from the sale of spinal fusion products, used in the treatment of spine disorders to CTL
Medical,  with  whom  the  Company  has  a  10-year  exclusive  sales  agreement  in  place.  The  Company  is  currently  pursuing  other  sales
opportunities for silicon nitride outside the spinal fusion application. The Company recognizes revenue from sales at the time the product is
shipped. In general, the Company’s customers do not have any rights of return or exchange.

F-8

 
 
 
 
 
 
 
 
 
 
 
 
Costs of Revenue

The expenses that are included in costs of revenue include all in-house manufacturing costs for the products we manufacture.

Cash and Cash Equivalents

The Company considers all cash on deposit, money market accounts and highly-liquid debt instruments purchased with original maturities
of three months or less to be cash and cash equivalents.

Inventories

Inventories are stated at the lower of cost or net realizable value, with cost for manufactured inventory determined under the standard costs,
which  approximate  actual  costs,  determined  on  the  first-in  first-out  (“FIFO”)  method.  Manufactured  inventory  consists  of  raw  material,
direct labor and manufacturing overhead cost components. The Company reviews the carrying value of inventory on a periodic basis for
excess or obsolete items, and records any write-down as a cost of revenue, as necessary.

Property and Equipment

Property  and  equipment,  including  leasehold  improvements,  are  stated  at  cost,  less  accumulated  depreciation  and  amortization.  Property
and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, which range from three to five
years. Leasehold improvements are amortized over the shorter of their estimated useful lives or the related lease term, generally five years.

The Company reviews the carrying value of the Company’s property and equipment that are held and used in the Company’s operations for
impairment  whenever  events  or  changes  in  circumstances  indicate  that  the  carrying  amount  of  an  asset  may  not  be  recoverable.
Recoverability  of  these  assets  is  determined  based  upon  expected  undiscounted  future  net  cash  flows  from  the  operations  to  which  the
assets  relate,  utilizing  management’s  best  estimate,  assumptions,  and  projections  at  the  time.  If  the  carrying  value  is  determined  to  be
unrecoverable from future operating cash flows, the asset is deemed impaired and an impairment charge would be recognized to the extent
the carrying value exceeded the estimated fair value of the asset. The Company estimates the fair value of assets based on the estimated
future discounted cash flows of the asset.

F-9

 
 
 
 
 
 
 
 
 
 
 
Accounts Receivable and Allowance for Doubtful Accounts

Accounts  receivable  are  carried  at  invoiced  amount  less  an  allowance  for  doubtful  accounts.  On  a  regular  basis,  the  Company  evaluates
accounts receivable and estimates an allowance for doubtful accounts, as needed, based on various factors such as customers’ current credit
conditions, length of time past due, and the general economy as a whole. Receivables are written off against the allowance when they are
deemed uncollectible.

Long Lived Intangible Assets and Goodwill

The Company evaluates the carrying value of definite-lived intangibles when events or changes in circumstances indicate that the carrying
value  may  not  be  recoverable.  Factors  the  Company  considers  important  which  could  trigger  an  impairment  review  include,  but  are  not
limited to, significant under-performance relative to historical or projected future operating results, significant changes in the manner of its
use of acquired assets or its overall business strategy, and significant industry or economic trends. The Company amortizes definite-lived
intangible  assets  on  a  straight-line  basis  over  their  useful  lives.  The  Company  recorded  no  impairment  loss  for  definite-lived  intangible
assets during the year ended December 31, 2017. As explained above, the Company sold most intangible assets that had a carrying value to
CTL Medical, retaining the carrying value of only one trademark asset.

When the Company determines that the carrying value of  a  long-lived  asset  may  not  be  recoverable  based  upon  the  existence  of  one  or
more  of  the  above  indicators,  the  Company  determines  the  recoverability  by  comparing  the  carrying  amount  of  the  asset  to  net  future
undiscounted  cash  flows  that  the  asset  is  expected  to  generate  and  recognizes  an  impairment  charge  equal  to  the  amount  by  which  the
carrying amount exceeds the fair market value of the asset.

If  the  Company’s  revenues  or  other  estimated  operating  results  are  not  achieved  at  or  above  our  forecasted  level,  and  the  Company  is
unable to recover such costs through price increases, the carrying value of certain of the Company’s assets may prove to be unrecoverable
and we may incur impairment charges of definitive-live intangible assets.

In  accordance  with  ASC  350,  Goodwill  and  Other  Intangible  Assets,  goodwill  is  not  amortized  but  is  required  to  be  reviewed  for
impairment at least annually or when events or circumstances indicate that carrying value may exceed fair value. As part of that annual
review, the Company determined that circumstances and events indicted that goodwill needed to be completely impaired and did so during
the third quarter 2018.

Derivative Liabilities

Derivative liabilities include the fair value of instruments such as common stock warrants, preferred stock warrants and convertible features
of notes, that are initially recorded at fair value and are required to be re-measured to fair value at each reporting period under provisions of
ASC  480, Distinguishing  Liabilities  from  Equity,  or ASC  815, Derivatives and Hedging.  The  change  in  fair  value  of  the  instruments  is
recognized as a component of other income (expense) in the Company’s consolidated statements of operations until the instruments settle,
expire  or  are  no  longer  classified  as  derivative  liabilities.  The  Company  estimates  the  fair  value  of  these  instruments  using  the  Black-
Scholes-Merton or Monte-Carlo valuation models depending on the complexity of the underlying instrument. The significant assumptions
used in estimating the fair value include the exercise price, volatility of the stock underlying the instrument, risk-free interest rate, estimated
fair value of the stock underlying the instrument and the estimated life of the instrument.

F-10

 
 
 
 
 
 
 
 
 
 
 
Research and Development

All  research  and  development  costs,  including  those  funded  by  third  parties,  are  expensed  as  incurred.  Research  and  development  costs
consist  of  engineering,  product  development,  test-part  manufacturing,  testing,  developing  and  validating  the  manufacturing  process,  and
regulatory  related  costs.  Research  and  development  expenses  also  include  employee  compensation,  employee  and  nonemployee  stock-
based compensation, supplies and materials, consultant services, and travel and facilities expenses related to research activities.

We expect to incur additional research and development costs as we continue to develop new spinal fusion products, our product candidates
for  total  joint  replacements,  such  as  our  total  hip  replacement  product  candidate,  and  dental  applications,  which  may  increase  our  total
research and development expenses.

Advertising Costs

Advertising  costs  are  expensed  as  incurred.  The  primary  component  of  the  Company’s  advertising  expenses  is  advertising  in  trade
periodicals. Advertising costs were less than $0.1 million for each of the years ended December 31, 2018 and 2017.

Income Taxes

The  Company  recognizes  deferred  tax  assets  and  liabilities  for  the  future  tax  consequences  attributable  to  the  differences  between  the
financial  statement  carrying  value  of  existing  assets  and  liabilities  and  their  respective  tax  bases.  Deferred  tax  assets  and  liabilities  are
measured using enacted tax rates in effect for the fiscal year in which those temporary differences are expected to be recovered or settled.
Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized.

The  Company  operates  in  various  tax  jurisdictions  and  is  subject  to  audit  by  various  tax  authorities.  The  Company  provides  for  tax
contingencies whenever it is deemed probable that a tax asset has been impaired, or a tax liability has been incurred for events such as tax
claims  or  changes  in  tax  laws.  Tax  contingencies  are  based  upon  their  technical  merits  relative  tax  law  and  the  specific  facts  and
circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for
such tax contingencies.

The Company recognizes uncertain income tax positions taken on income tax returns at the largest amount that is more-likely than-not to
be sustained upon audit by the relevant taxing authority. An uncertain income tax position will not be recognized if it has less than a 50%
likelihood of being sustained.

The Company’s policy for recording interest and penalties associated with uncertain tax positions is to record such items as a component of
our income tax provision. For the years ended December 31, 2018 and 2017, the Company did not record any material interest income,
interest expense or penalties related to uncertain tax positions or the settlement of audits for prior periods.

Stock-Based Compensation

The Company measures stock-based compensation expense related to employee stock-based awards based on the estimated fair value of
the  awards  as  determined  on  the  date  of  grant  and  is  recognized  as  expense  over  the  remaining  requisite  service  period.  The  Company
utilizes the Black-Scholes-Merton option pricing model to estimate the fair value of employee stock options. The Black-Scholes-Merton
model requires the input of highly subjective and complex assumptions, including the estimated fair value of the Company’s common stock
on the date of grant, the expected term of the stock option, and the expected volatility of the Company’s common stock over the period
equal to the expected term of the grant. The Company estimates forfeitures at the date of grant and revises the estimates, if necessary, in
subsequent periods if actual forfeitures differ from those estimates. The Company accounts for stock options to purchase shares of stock
that  are  issued  to  non-employees  based  on  the  estimated  fair  value  of  such  instruments  using  the  Black-Scholes-Merton  option  pricing
model.

F-11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Because  the  Company  was  a  privately-held  company  with  no  trading  history  prior  to  February  2014  and  has  limited  stock  history  since
February  2014,  the  Company  utilizes  the  historical  stock  price  volatility  from  a  representative  group  of  public  companies  to  estimate
expected  stock  price  volatility  and  our  historical  stock  price.  The  Company  selected  companies  from  the  medical  device  industry,
specifically those who are focused on the design, development and commercialization of products for the treatment of spine disorders, and
who  have  similar  characteristics  to  us,  such  as  stage  of  life  cycle  and  size.  The  Company  intends  to  continue  to  utilize  the  historical
volatility  of  the  same  or  similar  public  companies  to  estimate  expected  volatility  until  a  sufficient  amount  of  historical  information
regarding  the  price  of  our  publicly  traded  stock  becomes  available.  The  Company  uses  the  simplified  method  as  prescribed  by  the
Securities  and  Exchange  Commission  Staff Accounting  Bulletin  No.  107,  Share-based  Payment,  to  calculate  the  expected  term  of  stock
option grants to employees as the Company does not have sufficient historical exercise data to provide a reasonable basis upon which to
estimate the expected term of stock options granted to employees. The Company utilizes a dividend yield of zero because the Company has
never paid cash dividends and has no current intention to pay cash dividends. The risk-free rate of return used for each grant is based on the
U.S. Treasury yield curve in effect at the time of grant for instruments with a similar expected life.

Offering Costs

Offering costs consist of legal, accounting, and other advisory costs related to the Company’s efforts to raise debt and equity capital.

Offering  costs  paid  in  cash  or  by  issuing  warrants  associated  with  the  Company’s  equity  fundraising  activities  are  either  recorded  to
additional paid in capital as a reduction of the proceeds or immediately expensed.

Offering costs paid in cash or by issuing warrants associated with the Company’s debt fundraising activities are recorded as a debt discount
and amortized as interest expense over the life of the debt or immediately expensed with the offset to additional paid in capital.

Accounting Pronouncement Adopted In 2018

In  March  2016,  the  FASB  updated  the  accounting  guidance  related  to  stock  compensation.  This  update  simplifies  the  accounting  for
employee  share-based  payment  transactions,  including  the  accounting  for  income  taxes,  forfeitures,  and  statutory  tax  withholding
requirements, as the well as classification in the statement of cash flows. The standard is effective for the Company for its annual period
beginning January 1, 2018. The adoptions of this standard did not have a material impact on the consolidated financial statements.

Accounting Pronouncement Adopted in 2017

In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330) Simplifying the Measurement of Inventory”. The amendments clarify
that an entity should measure inventory within the scope of this update at the lower of cost and net realizable value. Net realizable value is
the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation.
Substantial  and  unusual  losses  that  result  from  subsequent  measurement  of  inventory  should  be  disclosed  in  the  consolidated  financial
statements. This guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those annual
periods.  The  amendments  are  to  be  applied  prospectively  with  earlier  application  permitted  as  of  the  beginning  of  an  interim  or  annual
reporting period. The adoption of this guidance did not have a material impact on the consolidated financial statements.

New Accounting Pronouncement, Not Yet Adopted

In August 2016, the Financial Accounting Standards Board (“FASB”) updated accounting guidance on the following eight specific cash
flow classification issues: (1) debt prepayment or debt extinguishment costs; (2) settlement of zero-coupon debt instruments or other debt
instruments  with  coupon  interest  rates  that  are  insignificant  in  relation  to  the  effective  interest  rate  of  the  borrowing;  (3)  contingent
consideration  payments  made  after  a  business  combination;  (4)  proceeds  from  the  settlement  of  insurance  claims;  (5)  proceeds  from  the
settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; (6) distributions received from equity
method  investees;  (7)  beneficial  interests  in  securitization  transactions;  and  (8)  separately  identifiable  cash  flows  and  application  of  the
predominance principle. Current GAAP does not include specific guidance on these eight cash flow classification issues. These updates are
effective for the Company for its annual period beginning January 1, 2019, and interim periods therein, with early adoption permitted. The
guidance in this standard is not expected to have a material impact on the consolidated financial statements.

F-12

 
 
 
 
 
 
 
 
 
 
 
 
 
In February 2016, the FASB updated the accounting guidance related to leases as part of a joint project with the International Accounting
Standards Board (“IASB”) to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities
on  the  balance  sheet  and  disclosing  key  information  about  leasing  arrangements.  Under  the  new  guidance,  a  lessee  will  be  required  to
recognize  assets  and  liabilities  for  capital  and  operating  leases  with  lease  terms  of  more  than  12  months. Additionally,  this  update  will
require disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows
arising  from  leases,  including  qualitative  and  quantitative  requirements.  The  standard  is  effective  for  the  Company  for  its  annual  period
beginning January 1, 2020, and interim periods therein, with early adoption permitted. The Company is currently evaluating the potential
impact this new standard may have on its consolidated financial statements.

In May 2014, in addition to several amendments issued during 2016, the FASB updated the accounting guidance related to revenue from
contracts with customers, which supersedes nearly all existing revenue recognition guidance under U.S. GAAP. The core principle is that a
company  should  recognize  revenue  when  promised  goods  or  services  are  transferred  to  customers  in  an  amount  that  reflects  the
consideration to which an entity expects to be entitled for those goods or services. The standard defines a five-step process to achieve this
core  principle  and,  in  doing  so,  more  judgment  and  estimates  may  be  required  within  the  revenue  recognition  process  than  are  required
under existing U.S. GAAP. The standard is effective for the Company for its annual period beginning January 1, 2019, and interim periods
therein, and shall be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption.
The Company has performed an evaluation of the new accounting standard and has determined the impact that the new standard will have
on its consolidated financial statements is not significant.

In  January  of  2017,  the  FASB  issued ASU  2017-04— Intangibles—Goodwill  and  Other  (Topic  350) :  Simplifying  the  Test  for  Goodwill
Impairment.  The  amendments  in  this  guidance  to  eliminate  the  requirement  to  calculate  the  implied  fair  value  of  goodwill  to  measure
goodwill impairment charge (Step 2). As a result, an impairment charge will equal the amount by which a reporting unit’s carrying amount
exceeds its fair value, not to exceed the amount of goodwill allocated to the reporting unit. An entity still has the option to perform the
qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The amendment should be applied
on a prospective basis. The guidance is effective for goodwill impairment tests in fiscal years beginning after December 15, 2021. Early
adoption is permitted for goodwill impairment tests performed after January 1, 2017. The impact of this guidance for the Company will
depend on the outcomes of future goodwill impairment tests.

The Company has reviewed all other recently issued, but not yet adopted, accounting standards, in order to determine their effects, if any,
on  its  results  of  operations,  financial  position  or  cash  flows.  Based  on  that  review,  the  Company  believes  that  none  of  these
pronouncements will have a significant effect on its consolidated financial statements.

F-13

 
 
 
 
 
 
Net Loss Per Share – Basic and Diluted

Basic  net  loss  per  share  is  calculated  by  dividing  the  net  loss  by  the  weighted-average  number  of  common  shares  outstanding  for  the
period,  without  consideration  for  common  stock  equivalents.  Diluted  net  loss  per  share  is  calculated  by  dividing  the  net  loss  by  the
weighted-average  number  of  common  share  equivalents  outstanding  for  the  period  that  are  determined  to  be  dilutive.  Dilutive  common
stock equivalents are comprised of convertible preferred stock, warrants for the purchase of common stock and stock options outstanding
under the Company’s equity incentive plans.

Potentially  dilutive  securities  not  included  in  the  calculation  of  diluted  net  loss  per  share  because  to  do  so  would  be  anti-dilutive  are  as
follows (in common stock equivalent shares):

Convertible preferred stock
Common stock warrants
Common stock options

As of December 31,

2018

9,336,264   
1,454,657   
11,301   
10,802,222   

2017

- 
1,503,711 
11,302 
1,515,013 

Below are basic and diluted loss per share data for the year ended December 31, 2018, which are in thousands except for share and per
share data: 

Basic
Calculation

Effect of Dilutive
Warrant
Securities

Diluted
Calculation

Numerator:

Loss from continuing operations
Loss from discontinued operations
Gain from disposal of discontinued operations
Deemed dividend and accretion of a discount
Net loss attributable to common stockholders

  $

  $

(9,689)   $
(324)  
1,361   
(13,900)  
(22,522)   $

(6,899)  
-   
-   
-   
(6,899)  

Denominator:

Number of shares used in per common share calculations:

10,938,047   

577,591   

Net loss per common share:

Loss from continuing operations
Loss from discontinued operations
Gain from disposal of discontinued operations
Deemed dividend and accretion of a discount
Net loss attributable to common stockholders

  $

  $

(0.88)   $
(0.03)  
0.12   
(1.27)  
(2.06)   $

-   
-   
-   
-   
-   

$

$

$

$

(16,588)
(324)
1,361 
(13,900)
(29,451)

11,515,638 

(1.44)
(0.03)
0.12 
(1.21)
(2.56)

Below are basic and diluted loss per share data for the year ended December 31, 2017, which are in thousands except for share and per
share data: 

Basic

Calculation  

Effect of Dilutive
Warrant Securities  

  Diluted Calculation  

Numerator:

Loss from continuing operations
Loss from discontinued operations
Gain from disposal of discontinued operations
Deemed dividend and accretion of a discount

Net loss attributable to common stockholders

  $

  $

(5,761)   $
(3,568)  
-   
-   
(9,329)   $

Denominator:

Number of shares used in per common share calculations:

2,978,904   

Net loss per common share:

Loss from continuing operations
Loss from discontinued operations
Gain from disposal of discontinued operations
Deemed dividend and accretion of a discount
Net loss attributable to common stockholders

2. Inventories

  $

  $

(1.93)   $
(1.20)  
-   
-   
(3.13)   $

-    $
-   
-   
-   
-    $

-   

-    $
-   
-   
-   
-    $

- 
- 
- 
- 
- 

- 

- 
- 
- 
- 
- 

 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
    
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
    
 
    
 
  
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The components of inventory were as follows (in thousands):

Raw materials
WIP
Finished goods
Inventories held for sale

3. Property and Equipment

The following is a summary of the components of property and equipment (in thousands):

Manufacturing and lab equipment
Leasehold improvements
Software and computer equipment
Furniture and equipment
Long-term assets held for sale

Less: accumulated depreciation

As of December 31,

2018

2017

624    $
47   
5   
-   
676    $

740 
52 
- 
1,585 
2,377 

As of December 31,

2018

2017

234    $
863   
745   
635   
-   
2,477   
(2,353)  

124    $

223 
863 
745 
635 
1,228 
3,694 
(2,248)
1,446 

  $

  $

  $

  $

Depreciation  expense  for  2018  was  approximately  $0.5  million,  with  $0.1  million  from  continuing  operations  and  $0.4  million  from
discontinued operations. Depreciation expense for 2017 was approximately $0.6 million, with $0.1 million from continuing operations and
$0.5 million from discontinued operations.

F-14

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4. Intangible Assets

Intangible assets consisted of the following (in thousands):

Trademarks
Intangible assets held for sale

Less: accumulated amortization

Year Ended December 31,
2017
2018

50    $
-   
50   
(4)  
46    $

- 
9,587 
9,587 
(6,936)
2,651 

  $

  $

Amortization expense for 2018 was approximately $0.4 million, with $0.1 from continued operations and $0.3 million from discontinued
operations. Amortization expense for 2017 was approximately $0.5 million, with the entire amount from discontinued operations.

5. Fair Value Measurements

Financial Instruments Measured and Recorded at Fair Value on a Recurring Basis

The Company has issued certain warrants to purchase shares of common stock, which are considered mark-to-market liabilities and are re-
measured  to  fair  value  at  each  reporting  period  in  accordance  with  accounting  guidance.  Fair  value  is  based  on  the  price  that  would  be
received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date,
under a three-tier fair value hierarchy which prioritizes the inputs used in measuring fair value as follows:

Level 1

- quoted market prices for identical assets or liabilities in active markets.

Level 2

- observable prices that are based on inputs not quoted on active markets but corroborated by market data.

Level 3

- unobservable inputs reflecting management’s assumptions, consistent with reasonably available assumptions made by

other market participants. These valuations require significant judgment.

The Company classifies assets and liabilities measured at fair value in their entirety based on the lowest level of input that is significant to
their fair value measurement. No financial assets were measured on a recurring basis as of December 31, 2018 and 2017. The following
tables set forth the financial liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as of December
31, 2018 and 2017.

Description
Derivative liability

Fair Value Measurements as of December 31, 2018
(in thousands)

Level 1

Level 2

Level 3

Total

Common stock warrants

  $

-    $

-    $

1,566    $

1,566 

Description
Derivative liability

Fair Value Measurements as of December 31, 2017
(in thousands)

Level 1

Level 2

Level 3

Total

Common stock warrants

  $

-    $

-    $

1,357    $

1,357 

F-15

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
    
 
  
 
The  Company  did  not  have  any  transfers  of  assets  and  liabilities  between  Level  1  and  Level  2  of  the  fair  value  measurement  hierarchy
during the years ended December 31, 2018 and 2017. The following table presents a reconciliation of the derivative liabilities measured at
fair  value  on  a  recurring  basis  using  significant  unobservable  inputs  (Level  3)  during  the  years  ended  December  31,  2018  and  2017  (in
thousands):

Balance at December 31, 2016

Issuance of derivatives
Change in fair value

Balance at December 31, 2017

Issuance of derivatives
Change in fair value
Exercise of warrants
Other, net

Balance at December 31, 2018

Common Stock Warrants

Common Stock
Warrants

(3,665)
(810)
3,118 
(1,357)
(7,577)
7,005 
575 
(212)
(1,566)

  $

  $

The Company has issued certain warrants to purchase shares of common stock, which are considered mark-to-market liabilities and are re-
measured to fair value at each reporting period in accordance with accounting guidance. As of December 31, 2018 and 2017, approximately
$1.6 million and $0.5 million respectively, of the derivative liabilities were calculated using the Black-Scholes-Merton valuation model. As
of  December  31,  2018,  and  2017,  less  than  $0.1  million  and  approximately  $0.9  million  respectively,  were  calculated  using  the  Monte
Carlo Simulation valuation model. Issuances of common stock warrants deemed to be derivative liabilities during the year ended December
31, 2018 were valued at approximately $7.6 million on the date of issuance using the Black-Scholes-Merton valuation model. Issuance of
common stock warrants deemed to be derivative liabilities during the year ended December 31, 2017, were valued at approximately $0.8
million on the date of issuance using the Monte Carlo Simulation valuation model.

The assumptions used in estimating the common stock warrant liability using the Black-Scholes-Merton valuation model at December 31,
2018 and 2017 were as follows:

Weighted-average risk-free interest rate
Weighted-average expected life (in years)
Expected dividend yield
Weighted average expected volatility

  December 31, 2018

  December 31, 2017

2.51% 
0.9 

-% 
157% 

1.89%
1.9 

-%
107%

The assumptions used in estimating the common stock warrant liability using the Monte Carlo Simulation valuation model at December 31,
2018 and 2017 were as follows:

Weighted-average risk-free interest rate
Weighted-average expected life (in years)
Expected dividend yield
Weighted average expected volatility

  December 31, 2018

  December 31, 2017

2.46% 
3.1 

-% 
68% 

2.20%
3.6 

-%
64%

F-16

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In addition, if any time after the second anniversary of the issuance of the warrant, both: (1) the 30-day volume weighted average price of
the Company’s stock exceeds $3.00; and (2) the average daily trading volume for such 30-day period exceeds $0.4 million, the Company
may call this warrant for $0.01 per share. For those warrants that have a call provision, management believes the Monte Carlo Simulation
valuation  model  provides  a  better  estimate  of  fair  value  for  the  warrants  issued  during  2018  and  2017  than  the  Black-Scholes-Merton
valuation model.

Other Financial Instruments

The Company’s recorded values of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate
their  fair  values  based  on  their  short-term  nature.  The  recorded  value  of  notes  payable  approximates  the  fair  value  as  the  interest  rate
approximates market interest rates.

6. Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

Payroll and related expenses
Commissions
Royalties
Interest payable
Final loan payment fees
Resterilization and repackaging costs
Other

7. Debt

L2 Capital Debt

Year Ended December 31,
2017
2018

388    $
-   
-   
-   
-   
344   
106   
838    $

477 
311 
96 
6 
1,650 
- 
142 
2,682 

  $

  $

On January 31, 2018, the Company signed a promissory note in the aggregate principal amount of up to $0.84 million (the “L2 Note”) for
an aggregate purchase price of up to $0.75 million and warrants to purchase up to an aggregate of 68,257 shares of  common  stock  (the
“Warrants”) at an exercise price of $3.31 per share. The maturity date was six months from date of funding. The L2 Note’s interest rate was
8%  per  year  and  a  default  interest  rate  of  18%  per  year.  The  L2  Note  was  able  to  be  converted  by  the  holder  of  the  Note  at  any  time
following an event of default. The conversion price of the L2 Note in the event of a default was equal to the product of (i) 0.70 multiplied
by (ii) the lowest volume weighted average price, or VWAP, of the Company’s common stock during the 20-day trading period ending in
the Holder’s sole discretion on the last complete trading day prior to conversion, or, the conversion date.

On May 14, 2018, the Company closed on an underwritten public offering of units, consisting of convertible preferred stock and warrants,
for gross proceeds of $15.0 million. Part of the proceeds from this offering were used to pay off the outstanding debt with L2 Capital. The
total payoff was $1.1 million, with $0.7 million in principal and $0.4 million in interest.

F-17

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Hercules and MEF I, LP/Anson Investments Debt Exchange

On  January  3,  2018,  the  Company  entered  into  an Assignment Agreement  (the  “Assignment Agreement”)  with  MEF  I,  LP  and Anson
Investments Master Fund (collectively the “Assignees” and each an “Assignee”), Hercules Technology III, L.P. (“HT III”) and Hercules
Capital, Inc. (“HC” and, together with HT III, “Hercules”), pursuant to which Hercules assigned to the Assignees all amounts remaining
due  under  the  Loan  and  Security Agreement,  dated  June  30,  2014,  as  amended,  between  the  Company  and  Hercules  (the  “Loan  and
Security Agreement”) and (2) the note (the “Hercules Note”) between the Company and Hercules evidencing the amounts due under the
Loan and Security Agreement. The total amount assigned by Hercules to the Assignees in the aggregate was $2.3 million and was secured
by  the  same  collateral  underlying  the  Loan  and  Security Agreement.  Subsequently,  the  Company  entered  into  an  exchange  agreement
pursuant  to  which  the  Assignees  agreed  to  exchange  the  Hercules  Term  Loan  obligation  acquired  by  them  for  two  senior  secured
convertible promissory notes issued by the Company, each in the principal amount of $1.1 million for an aggregate principal amount of
$2.2  million,  (the  “Exchange  Notes”).  The  Exchange  Notes  were  scheduled  to  mature  on  February  3,  2019  (the  “Maturity  Date”).  The
Exchange Notes had interest at a rate of 15%  per  annum.  Prior  to  the  Maturity  Date,  principal  and  interest  accrued  under  the  Exchange
Notes  was  payable  in  cash  or,  if  certain  conditions  were  met,  payable  in  shares  of  our  common  stock. All  principal  accrued  under  the
Exchange  Notes  was  convertible  into  shares  of  our  common  stock  (“Conversion  Shares”)  at  the  election  of  the  holders  at  any  time  at  a
fixed conversion price of $3.87 per share. Upon the occurrence of an event of default, the Assignees were entitled to convert all or any part
of their Exchange Notes at a conversion price (the “Alternate Conversion Price”) equal to 70% of the lowest traded price of our common
stock during the ten trading days prior to the conversion date, provided that (i) in no event was the Alternate Conversion Price less than
$1.75 per share and (ii) the Assignees were not entitled to receive more than 19.99% of the outstanding Common Stock. So long as these
Exchange Notes remained outstanding or the Assignees held any Conversion Shares, the Company was prohibited from entering into any
financing transaction pursuant to which the Company sell its securities at a price lower than $1.75 per share. The Exchange Notes were
secured by a first priority security interest in substantially all of the Company assets, including intellectual property, and contains covenants
restricting payments to certain of our affiliates.

On May 14, 2018, the Company closed on an underwritten public offering of units, consisting of convertible preferred stock and warrants,
for gross proceeds of $15.0 million. Part of the proceeds from this offering were used to pay off the outstanding debt with MEF I, L.P and
Anson Investments. The total payoff was $1.6 million, with $1.4 million in principal and $0.2 million in interest.

North Stadium Term Loan – Related Party

On July 28, 2017, the Company entered into a $2.5 million term loan (the “North Stadium Loan”) with North Stadium Investments, LLC
(“North Stadium”), a company owned and controlled by the Company’s Chief Executive Officer and Chairman of the Board. The North
Stadium Loan bore interest at 10% per annum and required the Company to make monthly interest only payments from September 5, 2017
through July 5, 2018. All principal and unpaid interest (if any) under the North Stadium Loan was due and payable on July 28, 2018. The
North Stadium Loan was secured by substantially all of the Company’s assets but was junior to security interest in assets encumbered by
the  Hercules  Term  Loan  (see  below).  In  connection  with  the  North  Stadium  Loan  the  Company  also  issued  North  Stadium  a  warrant  to
purchase up to 55,000 shares of the Company’s common stock at a purchase price of $5.04 per share, subject to a 5-year term. The relative
estimated value of the warrants on the date of grant approximated $0.2 million, which was being amortized as interest expense over the life
of the term loan.

On  October  1,  2018,  CTL  Medical  assumed  the  North  Stadium  Term  Loan  debt  as  part  of  the  sale  of  the  retail  spine  business. As  of
December 31, 2018, the Company has been released by North Stadium from any and all obligations related to this debt.

Hercules Term Loan

On June 30, 2014, the Company entered into a Loan and Security Agreement with Hercules which provided the Company with a $20.0
million  term  loan.  The  Hercules  Term  Loan  matured  on  January  1,  2018.  The  Hercules  Term  Loan  included  a  $0.2  million  closing  fee,
which was paid to Hercules on the closing date of the loan. The closing fee was recorded as a debt discount and was being amortized to
interest expense over the life of the loan. The Hercules Term Loan also included a non-refundable final payment fee of $1.7 million. The
final payment fee was being accrued and recorded to interest expense over the life of the loan.

On  January  3,  2018,  the  Hercules  Term  Loan  and  all  amounts  owing  thereunder  was  assigned  to  MEF  I  and Anson  Investments.  See
discussion above for a more detailed description of that transaction.

F-18

 
 
 
 
 
 
 
 
 
 
 
Long-term debt consisted of the following (in thousands):

December 31, 2018
  Unamortized  
Discount
and Debt
Issuance
Costs

Net
Carrying
  Amount

December 31, 2017
  Unamortized  
Discount
and Debt
Issuance
Costs

Outstanding
  Principle  

Outstanding
  Principle  
  $

-    $

       -   
-   
-   
-    $

  $

-    $

        -   
-   
-   
-    $

-    $

    -   
-   
-   
-    $

605    $

  2,500   
3,105   
(3,105)  

-    $

Net
Carrying
  Amount  
605 
2,356 
2,961 
(2,961)
- 

-    $

    (144)  
(144)  
144   

-    $

Hercules Term Loan
North Stadium
Total debt

Less: Current portion
Long-term debt

8. Equity

July-December 2018 Preferred Stock Conversion

From July through December of 2018, Series B Convertible Preferred shareholders of the Company converted 10,926 shares of Series B
Convertible Preferred Stock into 17,098,973 shares of common stock.

August 2018 Warrant Exercise

During August  2018,  pursuant  to  the  cashless  exercise  provision  contained  in  their  warrant,  L2  Capital  exercised  its  warrants  and  was
issued 242,063 shares of common stock. The L2 Capital warrant is no longer outstanding.

July 2018 Warrant Exercise

During May 2018, the Company closed on a public offering, consisting of both convertible preferred stock and warrants. During July 2018,
29,927 of the warrants were exercised and converted into 29,927 shares of common stock.

May-June 2018 Preferred Stock Conversion

During both May 2018 and June 2018, Series B Convertible Preferred shareholders of the Company converted 4,072 shares of Series B
Convertible Preferred Stock into 3,086,570 shares of common stock.

May 2018 Warrant Exercise (July 2016 Warrants)

During March 2018, the Company repriced 832,000 warrants dated July 8, 2016, from $12 to $2.125 (for further description see Warrant
Reprice March 2018 below). During May 2018, an additional 145,834 of the repriced warrants were exercised resulting in gross proceeds to
the Company of $0.3 million.

May 2018 Unit Offering

On May 14, 2018, the Company closed on an underwritten public offering of units (“the Units”), consisting of convertible preferred stock
and warrants, for gross proceeds of $15.0 million, which excludes underwriting discounts and commissions and offering expenses payable
by SINTX. The offering was priced at a public offering price of $1,000 per unit. Each unit consisted of one share of Series B Convertible
Preferred Stock, with a stated value of $1,100, and warrants to purchase up to 758 shares of common stock (the “May 2018 Warrants”). The
May 2018 Warrants are initially exercisable at an exercise price of $1.60 per share and expire 5 years from the date of issuance. The Series
B Preferred Stock is convertible into shares of common stock by dividing the stated value of $1,100 by: (i) for the first 40 trading days
following  the  closing  of  this  offering,  $1.4512  (the  “Conversion  Price”),  (ii)  after  40  trading  days  but  prior  to  the  81st  trading  day,  the
lesser of  (a) the Conversion Price and (b) 87.5% of the lowest volume weighted average price for our Common Stock as reported at the
close of trading on the market reporting trade prices for the Common Stock during the five trading days prior to the 41st trading day, and
(iii)  after  80  trading  days,  the  lesser  of    (a)  the  Conversion  Price  and  (b)  87.5%  of  the  lowest  volume  weighted  average  price  for  our
Common Stock as reported at the close of trading on the market reporting trade prices for the Common Stock during the five trading days
prior to the date of the notice of conversion. In the case of (ii)(b) and (iii)(b) above, the share price shall not be less than $0.48 (the “Floor
Price”). Each of the Conversion Price and Floor Price is subject to adjustment in certain circumstances.

The  Company  raised  $15.0  million  associated  with  the  issuance  of  the  Units,  with  $6.8  million,  net  of  issuance  costs  of  $0.6  million,
allocated to the preferred stock and $6.9 million, net of issuance costs of $0.7 million, allocated to the warrants. In association with the
warrants that were recorded as a derivative liability, the Company immediately expensed approximately $0.7 million of issuance costs. The
15,000 preferred shares were initially convertible into 11,369,900 shares of common stock and had an effective conversion rate of $1.45 per
share based on the proceeds that were allocated to them. The conversion price was adjusted to $0.6543, effective July 12, 2018, and was
adjusted again on September 7, 2018 to $0.48.

Warrant Reprice March 2018

During  the  three  months  ended  March  31,  2018,  the  Company  entered  into  a  warrant  amendment  agreement  (the  “Amendment
Agreement”)  with  certain  holders  of  previously  issued  Series  E  Common  Stock  Purchase  Warrants  (collectively,  “Investors”).  In
connection  with  that  certain  Series  E  Common  Stock  Purchase  Warrant  between  the  Company  and  Investors  dated  July  8,  2016,  the

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Company issued to Investors warrants to purchase up to 832,000 shares of common stock (the “Warrant Shares”) at an exercise price of
$12.00  per  share,  (the  “Investors  Warrants”).  Under  the  terms  of  the Amendment Agreement,  in  consideration  of  Investors  exercising
668,335 of the Investors Warrants (the “Warrant Exercise”), the exercise price per share of the Investors Warrants was reduced to $2.125
per share. 668,335 of the Investors Warrants were exercised resulting in gross proceeds to the Company of $1.4 million before payment of
placement agent fees and costs. In addition, and as further consideration, the Company issued to Investors new warrants to purchase up to
the  number  of  shares  of  common  stock  equal  to  100%  of  the  number  of  Warrant  Shares  issued  pursuant  to  the  Warrant  Exercise  at  an
exercise price per share equal to $2.00 per share.

January 2017 Offering

During 2017, the Company completed a secondary offering in which the Company sold 741,667 shares of common stock and warrants to
purchase  333,750  shares  of  common  stock.  The  Company  received  approximately  $3.9  million  in  proceeds  from  the  offering,  with  $3.1
million, net of issuance costs of $0.6 million, allocated to common stock and $0.8 million allocated to the warrants. In association with the
warrants  that  were  recorded  as  a  derivative  liability,  the  Company  immediately  expensed  $0.1  million  of  issuance  costs.  The  warrants
became exercisable on the closing date, expire on the five-year anniversary of the closing date, and have an initial exercise price per share
equal  to  $6.60  subject  to  adjustments  for  events  of  recapitalization,  stock  dividends,  stock  splits,  stock  combinations,  reclassifications,
reorganizations or similar events affecting the Company’s common stock.

On February 24, 2017, the underwriter in the 2017 secondary offering exercised its option to purchase additional warrants for 30,000 shares
of the Company’s common stock.

F-19

 
 
 
 
July 2016 Offering

In July 2016, the Company completed a secondary offering in which the Company sold 5,258,000 Class A Units, including 1,650,000 units
sold pursuant to the exercise by the underwriters of their over-allotment option, priced at $1.00 per unit, and 7,392 Class B Units, priced at
$1,000 per unit. Each Class A Unit consisted of 1/12th share of common stock and one warrant to purchase 1/12th share of common stock.
Each Class B Unit consisted of one share of preferred stock convertible into 83 shares of common stock and warrants to purchase 83 shares
of common stock. The securities comprising the units were immediately separable and were issued separately. In total, the Company issued
438,167  shares  of  common  stock,  7,392  shares  of  preferred  stock  convertible  into  616,000  shares  of  common  stock  and  warrants  to
purchase  1,054,167  shares  of  common  stock  at  a  fixed  exercise  price  of  $12.00  per  share.  The  Company  received  proceeds  of
approximately $11.4 million, net of underwriting and other offering costs.

The Company raised $4.9 million associated with the Class A Units, with $2.5 million, net of issuance costs of $0.3 million, allocated to
the common stock and $2.4 million allocated to the warrants. The Company also raised $7.0 million associated with the Class B Units with
$3.6 million, net of issuance costs of $0.4 million, allocated to preferred stock and $3.4 million allocated to the warrants. The $5.8 million
allocated to warrants were recorded as a derivative liability. In association with the warrants that were recorded as a derivative liability, the
Company immediately expensed approximately $0.5 million of issuance costs. The 7,392 preferred shares were convertible into 616,000
shares of common stock and had an effective conversion rate of $6.48 per share based on the proceeds that were allocated to them. The
stock  price  on  July  8,  2016,  was  $10.56  per  share  which  resulted  in  a  fair  value  in  excess  of  carrying  value  of  $4.08  per  share  or  $2.5
million in total. The fair value in excess of carrying value, or beneficial conversion feature, was recorded as an adjustment within equity
(e.g., deemed dividend). The Company recorded a non-cash, deemed dividend of $6.3 million ($2.5 and $3.8 million—calculated as $0.4
million  in  offering  costs  plus  $3.4  million  measured  as  the  difference  between  the  stated  value  and  the  allocated  proceeds)  related  to  a
beneficial conversion feature and accretion of a discount on convertible preferred stock.

Subsequent to the secondary offering, all 7,392 shares of convertible preferred stock have been converted into 616,000 shares of common
stock. Furthermore, the Company received $0.4 million and issued 37,208 shares of common stock upon the exercise of certain warrants
issued in the secondary offering.

F-20

 
 
 
 
 
 
9. Stock-Based Compensation

A summary of the Company’s outstanding stock option activity for the years ended December 31, 2018 and 2017 is as follows:

December 31, 2018

Outstanding at December 31, 2017

Granted
Exercised
Forfeited
Expired

Outstanding at December 31, 2018
Exercisable at December 31, 2018
Vested and expected to vest at December 31, 2018  

Outstanding at December 31, 2016

Granted
Exercised
Forfeited
Expired

Outstanding at December 31, 2017

Exercisable at December 31, 2017
Vested and expected to vest at December 31, 2017  

Options

Weighted-
Average
  Exercise Price  
264.26   
-   
-   
-   
7,423.20   
263.85   
261.61   
263.85   

11,302    $

-   
-   
-   
(1)   $
11,301    $
10,636    $
11,301    $

Weighted-
Average
Remaining
Contractual Life
(Years)

7.3    $
-   
-   
-   
-   
6.3    $
7.1    $
6.3    $

December 31, 2017

Options

Weighted-
Average
  Exercise Price  
367.08   
-   
-   
-   
8,719.64   
264.26   
287.31   
264.26   

11,446    $

-   
-   
-   
(144)   $
11,302    $
9,835    $
11,302    $

F-21

Weighted-
Average
Remaining
Contractual Life
(Years)

8.2    $
-   
-   
-   
-   
7.3    $
8.3    $
7.3    $

Intrinsic Value  
   - 
- 
- 
- 
- 
- 
- 
- 

Intrinsic Value  
- 
   - 
- 
- 
- 
- 
- 
- 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total stock-based compensation expense included in the consolidated statements of operations is allocated as follows (in thousands):

Cost of revenue
Research and development
General and administrative
Selling and marketing

As of December 31,

2018

2017

-    $
1   
22   
19   
42    $

10 
64 
92 
53 
219 

  $

  $

There was no significant unrecognized stock-based compensation at December 31, 2018 and 2017.

F-22

 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
10. Income Taxes

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial
reporting purposes and the amounts used for income tax purposes.

The following is a reconciliation of the expected statutory federal income tax provision to the actual income tax expense:

Federal statutory rate
State taxes, net of federal benefit
Return to provision
Equity related expenses
Change in statutory rate
Change in valuation allowance
Goodwill impairment
Other permanent differences
Total income tax expense

December 31,

2018

2017

(21.0)% 
(2.9)% 
0.0%  
(10.7)% 
0.0%  
17.7%  
14.7%  
2.2%  
0.0%  

(35.0)%
(5.1)%
(0.2)%
(10.4)%
272.7%
(222.1)%
0.0%
0.1%
0.0%

Significant components of the Company’s deferred tax assets and liabilities were as follows (in thousands):

Deferred tax assets:

Net operating loss carryforwards
Stock-based compensation
Inventory reserve
Federal R&D credit
Accrued expenses
Depreciation
Other

Total deferred tax assets

Deferred tax liabilities:

Depreciation
Intangibles

Total deferred tax liabilities
Less valuation allowance
Net deferred tax liability

Pre-tax book income at statutory rate
State taxes, net of federal benefit
Return to provision
Equity related expenses
Changer in statutory rate
Change in valuation allowance
Other
Total income tax expense

December 31,

2018

2017

  $

46,096 
2,918 
- 
2,222 
49 
- 
98 
51,383 

(31)  
(134)  

(165)  
(51,352)  

(134)   $

41,840 
2,907 
2,340 
2,222 
492 
- 
108 
49,909 

(37)
(210)

(247)
(49,796)
(134)

December 31,

2018

2017

(1,845)   $
(252)  
4 
501 
- 
1,556 
36 
- 

  $

(3,265)
(479)
(21)
(970)
25,447 
(20,723)
11 
- 

  $

  $

  $

  $

As of  December  31,  2018  and  2017,  the  Company  had  net  operating  loss  carryforwards  for  federal  and  state  income  tax  purposes  of
approximately  $184.8  million  and  $167.7  million,  respectively.  The  federal  and  state  net  operating  loss  carryforwards  will  expire  from
2023  to  2037,  unless  previously  utilized. Additionally,  the  Company  believes  an  ownership  change  has  occurred  that  would  trigger  the
limitation on usage of net operating losses imposed by Internal Revenue Code section 382. Because of this limitation, a significant portion
of the net operating losses would more likely than not expire unused.

During  the  years  ended  December  31,  2018  and  2017,  the  Company  recognized  no  amounts  related  to  interest  or  penalties  related  to
uncertain tax positions. The Company is subject to taxation in the United States and various state jurisdictions. The Company currently has
no years under examination by any jurisdiction.

A  valuation  allowance  has  been  established  as  realization  of  such  deferred  tax  assets  has  not  met  the  more  likely-than-not  threshold
requirement. If the Company’s judgment changes and it is determined that the Company will be able to realize these deferred tax assets, the
tax benefits relating to any reversal of the valuation allowance on deferred tax assets will be accounted for as a reduction to income tax
expense.  The  tax  valuation  allowance  increased  by  approximately  $1.6  million  and  decreased  by  $20.7  million  for  the  years  ended
December 31, 2018 and 2017, respectively.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
F-23

 
Recent Tax Legislation

On December 22, 2017, the Tax Cuts and Jobs Act (“Tax Reform Act”) was signed into law by the President of the United States. The Tax
Reform Act significantly revised the U.S. corporate income tax regime by, among other things, lowering the U.S. federal corporate tax rate
from  35%  to  21%  effective  for  our  calendar  year  ending  December  31,  2018.  U.S.  GAAP  requires  that  the  impact  of  tax  legislation  be
recognized in the period in which the law was enacted.

The  Tax  Reform  Act  reduces  the  federal  corporate  tax  rate  to  21%  effective  for  our  calendar  year  ending  December  31,  2018.  We
recognized the effects of the Tax Reform Act for the re-measurement of the net deferred tax liabilities during the year ended December 31,
2017.

We recognized the income tax effects of the Tax Reform Act in our 2017 financial statements in accordance with Staff Accounting Bulletin
No. 118 (“SAB 118”), which provides SEC staff guidance for the application of ASC Topic 740, Income Taxes, in the reporting period in
which  the  2017  Tax  Reform Act  was  signed  into  law.  The  guidance  addresses  how  a  company  recognizes  provision  amounts  when  a
company  does  not  have  the  necessary  information  available,  prepared  or  analyzed  (including  computations)  in  reasonable  detail  to
complete its accounting for the effect of the changes in the Tax Reform Act. As such, the financial results reflect the income tax effects of
the  Tax  Reform Act  for  which  the  accounting  under ASC  Topic  740  is  complete  and  provisional  amounts  for  those  specific  income  tax
effects  of  the  Tax  Reform Act  for  which  the  accounting  under ASC  740  is  incomplete,  but  a  reasonable  estimate  could  be  determined.
Pursuant  to  the  SAB  118,  we  are  allowed  a  measurement  period  of  up  to  one  year  after  the  enactment  date  of  the  Tax  Reform Act  to
finalize the recording of the related tax impacts.

11. Commitment and Contingencies

The  Company  currently  leases  laboratory,  manufacturing  and  office  space  and  equipment  under  noncancelable  operating  leases  which
provide for rent holidays and escalating payments; this lease ends 2019. Lease incentives, including rent holidays, allowances for tenant
improvements  and  rent  escalation  provisions,  are  recorded  as  deferred  rent.  Rent  under  operating  leases  is  recognized  on  a  straight-line
basis beginning with lease commencement through the end of the lease term. Sublease income is recorded as a reduction of rent expense.
For each of the years ended December 31, 2018 and 2017, rental expense was $1.0 million and $1.0 million, respectively. Sublease income
was $0.1 million and $0.1 million during both of the years ended December 31, 2018 and 2017.

Future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one
year as of December 31, 2018 are $980,000, which is due during 2019.

F-24

 
 
 
 
 
 
 
 
 
The  Company  has  executed  agreements  with  certain  executive  officers  of  the  Company  which,  upon  the  occurrence  of  certain  events
related to a change in control, call for payments to the executives up to three times their annual salary and accelerated vesting of previously
granted stock options.

From time to time, the Company is subject to various claims and legal proceedings covering matters that arise in the ordinary course of its
business  activities.  Management  believes  any  liability  that  may  ultimately  result  from  the  resolution  of  these  matters  will  not  have  a
material adverse effect on the Company’s consolidated financial position, operating results or cash flows.

12. 401(k) Plan

Effective June 1, 2004, the Company adopted a defined contribution retirement plan under Section 401(k) of the Internal Revenue Code.
The plan covers substantially all employees. Eligible employees may contribute amounts to the plan, via payroll withholdings, subject to
certain limitations. The plan permits, but does not require, additional matching contributions to the plan by the Company on behalf of the
participants in the plan. The Company incurred approximately $0.1 million relating to retirement contributions for each of the years ended
December 31, 2018 and 2017.

13. Note Receivable

On  October  1,  2018,  the  Company  completed  the  sale  of  its  spine  business  to  CTL  Medical.  The  sale  included  a  $6  million  noninterest
bearing  note  receivable.  The  36-month  term  of  the  note  receivable  requires  18  payments  of  $138,889  followed  by  18  payments  of
$194,444, with maturing of the note receivable on October 1, 2021. The note receivable includes an imputed interest rate of 10%, which
totaled $915,725 as of October 31, 2018, and has a 36-month amortization. As of December 31, 2018, the net carrying value of the note
receivable was $4.8 million.

F-25

 
 
 
 
 
 
 
 
14. Discontinued Operations

As explained in Note 1, on October 1, 2018, the Company completed the sale of its retail spine business to CTL Medical The gain on the
sale of the retail spine business is estimated to approximate $1.4 million, which was recognized during the quarter ended December 31,
2018.

The  Company  and  CTL  Medical  entered  in  an  asset  purchase  agreement  whereby  CTL  Medical  agreed  to  acquire  all  of  the  Company’s
commercial spine business for total consideration of $8.5 million, which includes a $6.0 million (including interest) note receivable (See
Note 13) and CTL Medical’s assumption of the Company’s $2.5 million related party note payable (see Note 8). As a result of the closing,
CTL Medical is now the exclusive owner of Amedica’s portfolio of metal and silicon nitride spine products, which are presently sold under
the brand names of Taurus, Preference, and Valeo, with access to future silicon nitride spine technologies. The Company has agreed to pay
the cost, if any, to re-sterilize and re-package select silicon nitride spinal inventories sold to CTL Medical if the sterilization date expires
prior to CTL Medical selling the inventories to a third-party customer. The Company estimates the sterilization and repackaging cost to
approximate  $0.5  million.  Manufacturing,  R&D,  and  all  intellectual  property  related  to  the  core,  non-spine,  biomaterial  technology  of
silicon nitride remains with the Company in Salt Lake City. The Company will serve as CTL’s exclusive OEM provider of silicon nitride
products.

Assets and liabilities held for sale consisted of the following:

Assets
Current assets held for sale:
Retail spine inventory, net
Long-term assets held for sale:
Property and equipment, net
Intangible assets, net

Total assets

Liabilities
Current liabilities held for sale:

Debt – related party

Operating results related to discontinued operations consisted of the following:

Product revenue
Costs of revenue
Gross profit
Operating expenses:

Research and development
General and administrative
Sales and marketing
Total operating expenses
Loss from discontinued operations

September 30, 2018  

  December 31, 2017  

  $

  $

  $

1,708    $

959   
2,249   
4,916    $

1,602 

1,162 
2,651 
5,415 

2,500    $

2,356 

Year Ended December 31,

2018

2017

6,222    $
1,474   
4,748   

1,524   
190   
3,358   
5,072   
(324)   $

11,227 
6,351 
4,876 

1,571 
726 
6,147 
8,444 
(3,568)

  $

  $

During the nine-months ended September 30, 2018 and year ended December 31, 2017, the Company only recorded product revenues and
cost of revenues related to the spine business. Because of the sale of the retail spine business to CTL Medical, all product revenues and
costs of product revenues for these periods have been removed from the consolidated statements of operations. The only product revenues
and cost of product revenues recorded in the statement of operations for the years ended December 31, 2018 and 2017, related to the three
months ended December 31, 2018, which was subsequent to the sale of the spine business to CTL Medical.

F-26

 
 
 
 
 
 
 
 
 
 
 
   
  
 
 
    
 
  
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
 
 
    
 
  
 
 
    
 
  
 
 
    
 
  
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

SINTX Technologies, Inc. (previously known as Amedica Corporation)
Salt Lake City, Utah

We  hereby  consent  to  the  incorporation  by  reference  in  Registration  Statements  on  Form  S-3  (Nos.  333-207289,  333-205545,  and  333-
214804) and Form S-8 (No. 333-194977) of SINTX Technologies, Inc. (the Company) of our report dated March 8, 2019, relating to our
audit  of  the  financial  statements,  which  appears  in  this Annual  Report  on  Form  10-K  of  SINTX  Technologies,  Inc.  for  the  year  ended
December 31, 2018. Our report contains an explanatory paragraph regarding the Company’s ability to continue as a going concern.

/s/ Tanner LLC

Tanner LLC
March 8, 2019

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.1

I, B. Sonny Bal, certify that:

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

1. I have reviewed this annual report on Form 10-K of SINTX Technologies, Inc. (previously known as Amedica Corporation);

2.  Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact
necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect
to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this
report;

4.  The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and
procedures  (as  defined  in  Exchange  Act  Rules  13a-15(e)  and  15d-15(e))  and  internal  control  over  financial  reporting  (as  defined  in
Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under  our  supervision,  to  provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial
statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions
about  the  effectiveness  of  the  disclosure  controls  and  procedures,  as  of  the  end  of  the  period  covered  by  this  report  based  on  such
evaluation; and

(d)  Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the
registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.  The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over
financial  reporting,  to  the  registrant’s  auditors  and  the  audit  committee  of  the  registrant’s  board  of  directors  (or  persons  performing  the
equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which

are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)  Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the

registrant’s internal control over financial reporting.

Date: March 8, 2019

By: /s/ B. Sonny Bal
B. Sonny Bal
Chief Executive Officer

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2

I, B. Sonny Bal, certify that:

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

1. I have reviewed this annual report on Form 10-K of SINTX Technologies, Inc. (previously known as Amedica Corporation);

2.  Based  on  my  knowledge,  this  report  does  not  contain  any  untrue  statement  of  a  material  fact  or  omit  to  state  a  material  fact
necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect
to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all
material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this
report;

4.  The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and
procedures  (as  defined  in  Exchange  Act  Rules  13a-15(e)  and  15d-15(e))  and  internal  control  over  financial  reporting  (as  defined  in
Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed
under  our  supervision,  to  provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial
statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions
about  the  effectiveness  of  the  disclosure  controls  and  procedures,  as  of  the  end  of  the  period  covered  by  this  report  based  on  such
evaluation; and

(d)  Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that  occurred  during  the
registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.  The  registrant’s  other  certifying  officer  and  I  have  disclosed,  based  on  our  most  recent  evaluation  of  internal  control  over
financial  reporting,  to  the  registrant’s  auditors  and  the  audit  committee  of  the  registrant’s  board  of  directors  (or  persons  performing  the
equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which

are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)  Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the

registrant’s internal control over financial reporting.

Date: March 8, 2019

By: /s/ B. Sonny Bal
B. Sonny Bal
Principal Financial Officer

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATIONS UNDER SECTION 906

Exhibit 32

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United
States  Code),  each  of  the  undersigned  officers  of  SINTX  Technologies,  Inc.  (previously  known  as Amedica  Corporation),  a  Delaware
corporation (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Annual Report on Form 10-K for the year ended December 31, 2018 (the “Form 10-K”) of the Company fully complies with
the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Form 10-K fairly
presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 8, 2019

By: /s/ B. Sonny Bal
B. Sonny Bal
Chief Executive Officer and Principal Financial Officer