Xtant Medical (XTNT) 8-K Changes in Registrant's Certifying Accountant

                EXHIBIT 16.1     June 3, 2011     Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549
Ladies and Gentlemen:
We have read Item 4.01 of Form 8-K dated June 3, 2011, of Bacterin International Holdings, Inc. and we are in agreement with the statements contained in the second and third paragraphs therein. We have no basis to agree or disagree with other statements of the registrant contained therein.
  Child, Van Wagoner & Bradshaw, PLLC Salt Lake City, Utah