CCJR® LEADERSHIP
EXECUTIVE COMMITTEE
Adolph V. Lombardi, Jr., MD - Senior Director
Robert L. Barrack, MD - Deputy Director
William G. Hamilton, MD - Deputy Director
Steven J. MacDonald, MD - Deputy Director
ADVISORY COMMITTEE
James A. Browne, MD
Craig J. Della Valle, MD
C. Anderson Engh, MD
Fares S. Haddad, MD
Jay R. Lieberman, MD
Michael A. Mont, MD
Charles L. Nelson, MD
Ran Schwarzkopf, MD
Rafael J. Sierra, MD
Giles R. Scuderi, MD
STANDING COMMITTEES
As of March 2026. All committee positions, except the Membership Committee, begin and end their terms at the Open/Winter Meeting (Specialty Day). Membership Committee change-over occurs at the closed Summer Meeting.
MEMBERSHIP COMMITTEE
Ran Schwarzkopf, MD - Chair
James A. Browne, MD
William J. Long, MD
Paul E. Beaulé, MD
Michael J. Archibeck, MD
Samuel S. Wellman, MD - Past Chair
Rafael J. Sierra, MD - REAL Committee Liaison
REAL MENTORSHIP COMMITTEE (jointly with THE KNEE SOCIETY)
Rafael J. Sierra, MD - HS Co-Chair
Claudette M. Lajam, MD - KS Co-Chair
Alejandro Gonzalez Della Valle, MD
James A. Browne, MD
Ronald E. Delanois, MD
Jess H. Lonner, MD
Eric M. Smith, MD
Linda I. Suleiman, MD - Ad-Hoc Member
Charles L. Nelson, MD - Past Co-Chair
Antonia F. Chen, MD - Past Co-Chair
PROGRAM COMMITTEE
Jonathan M. Vigdorchik, MD - Chair
Mathias P.G. Bostrom, MD
Ryan M. Nunley, MD
Scott M. Sporer, MD
Edward Ebramzadeh, PhD
Christopher L. Peters, MD - Past Chair
TRAVELING FELLOWSHIP COMMITTEE
Amar S. Ranawat, MD - Chair
Christopher E. Pelt, MD
William J. Long, MD
Ran Schwarzkopf, MD
Rafael J. Sierra, MD - Past Chair
FINANCE COMMITTEE
James I. Huddleston, III, MD - Chair
Mathias P.G. Bostrom, MD
Steven J. MacDonald, MD
RESEARCH COMMITTEE
William Mihalko, MD, PhD - Chair
Jeremy M. Gililland, MD
Jonathan M. Vigdorchik, MD
Carlos A. Higuera-Rueda, MD, PhD
Michael A. Mont, MD - Past Chair
NOMINATING COMMITTEE
Steven J. MacDonald, MD - Chair
Stephen B. Murphy, MD
Jay R. Lieberman, MD
OPERATIONS COMMITTEE (jointly THE KNEE SOCIETY)
James I. Huddleston, III, MD - Co-Chair
Christopher L. Peters, MD
DIGITAL CONTENT COMMITTEE (jointly with THE KNEE SOCIETY)
William G. Hamilton, MD - Chair
Alejandro Gonzalez Della Valle, MD
James D. Slover, MD
Brett R. Levine, MD
Paul Khanuja, MD
Christopher E. Pelt, MD
Chad A. Krueger, MD
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