Established in 1991, the mission of the American Association of Hip and Knee Surgeons (AAHKS) is to advance hip and knee patient care through education, advocacy and research. We are committed to our core values of inclusivity, volunteerism, life-long learning, integrity, proactivity, professionalism and humanitarianism. AAHKS has a membership of over 4,000 surgeons and other hip and knee health care professionals.

Board of Directors

C. Lowry Barnes, MD

First Vice President
Richard Iorio, MD

Second Vice President
Bryan D. Springer, MD

Immediate Past President
Michael P. Bolognesi, MD

Past President
Craig J. Della Valle, MD

Gregory G. Polkowski II, MD, MSc

Ryan M. Nunley, MD

Antonia F. Chen, MD, MBA
Robert M. Molloy, MD
Denis Nam, MD
Ran Schwarzkopf, MD, MSc

Executive Director
Michael J. Zarski, JD

Councils and Committees

Committee members typically serve two-year terms from March to March. A call for Committee applications goes out at the end of each year, and members can apply online.

Council Chairs and Vice Chairs

Health Policy Council: James I. Huddleston III, MD
Education and Communications Council: Gregory G. Polkowski II, MD, MSc
Membership Council:

Committee Chairs  (Staff Liaison)

Advocacy: James I. Huddleston III, MD (Joshua Kerr)
Committee on Committees: C. Lowry Barnes, MD (Renalin Malvar-Ledda)
Digital Health and Social Media: Stefano A. Bini, MD
Diversity Advisory Board: Muyibat A. Adelani, MD and Adam A. Sassoon, MD, MS (Chiara Rodgers)
Education: Joseph T. Moskal, MD, FACS (Sigita Wolfe)
Evidence-Based Medicine: Matthew S. Austin, MD (Sigita Wolfe)
Fellowship Match Oversight: Michael J. Taunton, MD (Natalie Loper)
Finance: Ryan M. Nunley, MD (Sharon Creed)
FOCAL: William G. Hamilton, MD (Natalie Loper)
Humanitarian: Harpal S. Khanuja, MD (Chiara Rodgers)
Industry Relations: Lucian C. Warth, MD (Jeff Mitchell)
International: Rafael J. Sierra, MD (Joshua Kerr)
Member Outreach: H. Del Schutte, Jr., MD (Eileen Lusk)
Nominating: Michael P. Bolognesi, MD (Renalin Malvar-Ledda)
Patient and Public Relations: Brett R. Levine, MD, MS
Practice Management: Louis S. Stryker, MD (Joshua Kerr)
Program: R. Michael Meneghini, MD (Sigita Wolfe)
Publications: Samuel S. Wellman, MD
Quality Measures: William G. Hamilton, MD (Sigita Wolfe)
Research: Javad Parvizi, MD, FRCS (Chiara Rodgers)
Women in Arthroplasty: Audrey K. Tsao, MD (Eileen Lusk)
Young Arthroplasty Group: Brian M. Culp, MD (Joshua Kerr)


AAHKS Staff members serve as the administrative core of the association located in the Orthopaedic Headquarters in Rosemont, Illinois, USA. View list.


News releases, weekly news blog, online press kit, media request instructions and the advertising rate card are in the AAHKS Newsroom.

Strategic Plan

The Strategic Plan is updated every three years by the Board of Directors to guide the association and the profession.


The AAHKS Bylaws detail the association’s purpose, membership descriptions, board structure and duties, committee and meeting structure and rules. Download the Bylaws.
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