Exhibit 99.2

Execution Version

AMENDMENT NO. 1

TO THE

ROLLOVER AND VOTING AGREEMENT

This AMENDMENT NO. 1 (this “Amendment”) is made and entered into as of December 3, 2017, by and among OSTEON HOLDINGS, L.P., a Delaware limited partnership (“Parent”), on the one hand, and each of William Petty, M.D., Betty Petty, David W. Petty, Prima Investments, Limited Partnership, Miller Family Holdings, LLC, Bruce Thompson, Joel Phillips, Donna Edwards, Chris Roche and Steve Szabo (the “Shareholders”) on the other hand, to amend that certain ROLLOVER AND VOTING AGREEMENT, dated as of October 22, 2017, by and among Parent and each of William Petty, M.D., Betty Petty, David W. Petty, Prima Investments, Limited Partnership (as amended hereby, and as it may have been and may be further amended from time to time, the “Rollover and Voting Agreement”).

WHEREAS, Section 15(e) of the Rollover and Voting Agreement provides for the amendment of the Rollover and Voting Agreement in accordance with the terms set forth therein; and

WHEREAS, the parties hereto desire to amend the Rollover and Voting Agreement as set forth below and to add Miller Family Holdings, LLC, Bruce Thompson, Joel Phillips, Donna Edwards, Chris Roche and Steve Szabo as parties thereto.

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and agreements set forth herein and for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, and intending to be legally bound hereby, the parties hereto do hereby agree as follows:

1.    Shareholders / Rollover Investors. Each of Miller Family Holdings, LLC, Bruce Thompson, Joel Phillips, Donna Edwards, Chris Roche and Steve Szabo hereby joins in and agrees to be a party to and bound by the Rollover and Voting Agreement as a “Shareholder” and as a “Rollover Investor” as of the date hereof, and the terms “Shareholder” and “Rollover Investor” in the Rollover and Voting Agreement shall be deemed to include each such person.

2.    Amendment to Section 4(a). Section 4(a) of the Rollover and Voting Agreement is hereby amended by adding, immediately following the phrase “section 351 of the Code”, the phrase “in which the parties do not recognize any gain or income for U.S. Federal income tax purposes”.

3.    Amendment to Section 4(b). Section 4(b) of the Rollover and Voting Agreement is hereby amended by deleting the following sentence: “The Parent Interests shall be the only class and series of securities authorized or issuable by Parent in connection with the Merger and the transactions related thereto, other than securities which are junior in all respects to the Parent Interests, and the rights of the Rollover Investors in and with respect to Parent will be pari passu with all other owners of Parent, including the Fund (as defined in the Merger Agreement), except as expressly set forth in the Shareholders’ Agreement.”

4.    Amendment to Section 4(c). Section 4(c) of the Rollover and Voting Agreement is hereby amended to delete the existing text in its entirety and replace it with the following text:

“Parent Shareholders’ Agreement. The parties shall use their respective reasonable best efforts to negotiate and agreed on the form of a shareholders’ agreement of Parent to which each Rollover Investor will become a party (the “Parent Shareholders’ Agreement”) as promptly as reasonably practicable following December 1, 2017, with the intent that the Parent Shareholders’ Agreement shall be entered into and effective upon the Contribution Closing. If the parties have not entered into the Parent Shareholders’ Agreement by 30 calendar days following the Contribution Closing, then the parties shall submit (and, if Parent, on the one hand, or any Rollover Investor on the other hand, fails to join such submission, the other party may independently submit) any remaining unresolved or otherwise undecided terms of the proposed Parent Shareholders’ Agreement for decision and final resolution to binding arbitration to the exclusion of any courts of law, with such arbitration conducted by the American Arbitration Association in accordance with the then most current version of its commercial arbitration rules. The arbitrator(s) shall review the unresolved and undecided terms submitted for resolution and establish such terms based on Schedule A-3 and, to the extent not specified on Schedule A-3, what is customary in agreements and transactions of the type at issue and reasonable under the circumstances. The foregoing shall not prejudice any right of a party to seek an order compelling arbitration. Each Rollover Investor acknowledges and agrees that Parent shall not be required to pay the Merger Consideration to the Paying Agent in respect of such Rollover Investor’s Rollover Shares, but, for the avoidance of doubt, Parent shall be required at the Contribution Closing to issue to such Rollover Investor the Parent Interests set forth with respect to such Rollover Investor in Exhibit A-2.”

5.    Amendment to Section 8. Section 8(f) of the Rollover and Voting Agreement is hereby amended to delete the existing text in its entirety and replace it with the following text: “The Fund is acquiring Class A common equity interests of Parent in connection with the Merger, and other than such equity interests, the Fund and its Affiliates will not directly or indirectly own any equity or debt securities (or rights, options or warrants to purchase any such equity or debt securities) of Parent or its Affiliates, including the Company, at Closing or otherwise in connection with the Merger.”

6.    Amendment to Schedule A-1. Schedule A-1 of the Rollover and Voting Agreement is hereby replaced in its entirety by the following text:

Schedule A-1

Shareholders

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7.    Amendment to Schedule A-2. Schedule A-2 of the Rollover and Voting Agreement is hereby replaced in its entirety by the following text:

Schedule A-2

Rollover Investors

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8.    Amendment to Schedule A-3. Schedule A-3 of the Rollover and Voting Agreement is hereby replaced in its entirety by the following text:

Schedule A-3

Terms of Parent Shareholders’ Agreement

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9.    Section 16. The Rollover and Voting Agreement is hereby amended to include the following text following Section 15 thereof as a new Section 16:

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“The parties agree that any conversion of the Class B Common shares into Class A Common shares and warrants to purchase Class A Common shares in connection with an initial public offering is intended to be treated as a tax-free reorganization under section 368(a) of the Code in which the parties do not recognize any gain or income for U.S. Federal income tax purposes. None of the Parent or the Shareholders, or any of their respective Affiliates, will take any Tax reporting position or any position in any Tax audit that is inconsistent with such intended tax treatment of the conversion transaction except upon a contrary final determination by an applicable Taxing authority.”

10.    Miscellaneous Provisions.

(a)    Definitions. Unless otherwise specifically defined in this Amendment, each capitalized or other defined term used herein without definition shall have the meaning assigned to such term in the Rollover and Voting Agreement.

(b)    No Further Amendment. Except as expressly amended hereby, the Rollover and Voting Agreement is in all respects ratified and confirmed and all the terms, conditions, representations, warranties, covenants and provisions thereof shall remain in full force and effect in accordance with their respective terms. This Amendment is limited precisely as written and shall not be deemed to be an amendment to any other term or condition of the Rollover and Voting Agreement or any of the documents referred to therein or otherwise affect or operate as a waiver or relinquishment of any of the rights of any party under any of them. Except as expressly amended hereby, this Amendment does not constitute a waiver of any condition or other provision of the Rollover and Voting Agreement.

(c)    Effect of Amendment. This Amendment shall form a part of the Rollover and Voting Agreement for all purposes, and each party thereto and hereto shall be bound hereby. From and after the execution of this Amendment by the parties hereto, any reference to the Rollover and Voting Agreement shall be deemed a reference to the Rollover and Voting Agreement as amended hereby.

(d)    Representations and Warranties of Parent. Parent represents and warrants that (i) Parent has the organizational power and authority to execute and deliver this Amendment; (ii) the execution, delivery and performance by Parent of this Amendment have been duly and validly authorized by all necessary organizational action on the part of Parent, and (iii) no other organizational proceedings other than those previously taken or conducted on the part of Parent are necessary to approve and authorize this Amendment.

(e)    Representations and Warranties of the Shareholders. Each Shareholder represents and warrants that it has full power and authority to make, enter into and carry out the terms of this Amendment.

(f)    Governing Law. This Amendment, including all matters of construction, validity and performance and any action or proceeding (whether in contract, tort, equity or otherwise) arising out of this Amendment or any of the transactions contemplated by this Amendment shall be governed by, and construed in accordance with, the laws of the State of Florida, without giving effect to the rules of conflict of laws of such State or other jurisdiction that would cause the application of the laws of any jurisdiction other than Florida.

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(g)    Severability. If any term or other provision of this Amendment is invalid, illegal or incapable of being enforced by virtue of any Law, or due to any public policy, all other conditions and provisions of this Amendment shall nevertheless remain in full force and effect.

(h)    Counterparts. This Amendment may be executed by facsimile signatures and in any number of counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument.

(i)    Headings. The descriptive headings in this Amendment were formulated, used and inserted in this Amendment for convenience only and shall not be deemed to affect the meaning or construction of any of the provisions hereof.

(j)    Other Miscellaneous Terms. The provisions of Section 15 (Miscellaneous) of the Rollover and Voting Agreement shall apply mutatis mutandis to this Amendment, and to the Rollover and Voting Agreement as modified by this Amendment, taken together as a single agreement, reflecting the terms therein as modified hereby.

[Signature Page Follows]

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IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the date first written above.

[Signature Page to Amendment No. 1 to Voting and Rollover Agreement]

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IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the date first written above.

[Signature Page to Amendment No. 1 to Voting and Rollover Agreement]

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