American Association of Hip and Knee Surgeons

Advocacy, Education, Research

Operation Walk

Operation Walk GroupThe AAHKS supports the efforts of Operation Walk, a private, not-for-profit, volunteer medical services organization, founded by AAHKS Past President Lawrence D. Dorr, MD.

Since 1995, seven Operation Walk teams with participation by AAHKS members have been formed across the US and Canada to provide free surgical treatment for patients in developing countries that have no access to life-improving care for arthritis or other debilitating bone and joint conditions.

AAHKS Members Who Have Participated in Operation Walk

Lawrence D. Dorr, MD, Founder
C. Lowry Barnes, MD
Keith R. Berend, MD
Michael E. Berend, MD
David F. Bindelglass, MD
William D. Bugbee, MD
Miguel E. Cabanela, MD
Ronald M. Carn, MD
Jondy Cohen, MD
Christopher V. Cox, MD
John M. Cuckler, MD
Craig J. Della Valle, MD
Douglas A. Dennis, MD
Harold K. Dunn, MD
Charles A. Engh, MD
Gerard A. Engh, MD
Philip M. Faris, MD
Kevin B. Fricka, MD
William J. Gilligan, MD
Kenneth A. Gustke, MD
William G. Hamilton, MD
Aaron A. Hofmann, MD
Ginger E. Holt, MD
Michael A. Jacobs, MD
Christopher H. Kavolus, MD
Harpal S. Khanuja, MD
Carlos J. Lavernia, MD
David G. Lewallen, MD
Adolph V. Lombardi, Jr., MD, FACS
William T. Long, MD
Donald B. Longjohn, MD
Steven T. Lyons, MD
David A. Mattingly, MD
James P McAuley, MD, FRCSC
Richard W. McCalden, MD
Todd M. Miner, MD
H. Michael Mynatt, MD
Rima Nasser, MDBrian S. Parsley, MD
Christopher L. Peters, MD
Jeffery L. Pierson, MD
Lalit Puri, MD
Nasim A. Rana, MD
Merrill A. Ritter, MD (Emeritus)
Richard D. Scott, MD
John M. Siliski, MD
Bernard N. Stulberg, MD
S. David Stulberg, MD
Audrey K. Tsao, MD
O. David Taunton, Jr., M.D
Robert T. Trousdale, MD
Mark W. Woolf, MD
Robert B. Zann, MD

We are grateful for and proud of the contributions of these AAHKS Members. If you are an AAHKS Member who has participated, and your name is not listed, please email