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. AAHKS has a membership of over 4,000 surgeons and other hip and knee health care professionals.

Board of Directors

Michael P. Bolognesi, MD

First Vice President
C. Lowry Barnes, MD

Second Vice President
Richard Iorio, MD

Third Vice President
Bryan D. Springer, MD

Immediate Past President
Craig J. Della Valle, MD

Past President
Mark I. Froimson, MD, MBA

Gregory G. Polkowski II, MD, MSc

Ryan M. Nunley, MD

James A. Browne, MD
Antonia F. Chen, MD, MBA
Robert M. Molloy, MD
Mark J. Spangehl, MD

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

Health Policy Council: James I. Huddleston, MD
Education and Communications Council: Bryan D. Springer, MD
Membership Council: Mark J. Spangehl, MD

Committee Chairs (Staff liaisons in parentheses)

Advocacy: James I. Huddleston, MD (Joshua Kerr)
Committee on Committees: C. Lowry Barnes, MD (Renalin Malvar-Ledda)
Digital Health and Social Media: Stefano A. Bini, MD (Denise Smith Rodd)
Education: Joseph T. Moskal, MD, FACS (Sigita Wolfe)
Evidence-Based Medicine: Matthew S. Austin, MD (Sigita Wolfe)
Fellowship Match Oversight: Michael J. Taunton, MD (Sigita Wolfe)
Finance: Ryan M. Nunley, MD (Sharon Creed)
Humanitarian: Harpal S. Khanuja, MD (Chiara Rodgers)
Industry Relations: Lucian C. Warth, MD (Jeff Mitchell)
International: Rafael J. Sierra, MD (Joshua Kerr)
Leadership Development: Jay R. Lieberman, MD (Eileen Lusk)
Member Outreach: Thomas L. Bradbury, MD (Eileen Lusk)
Nominating: Craig J. Della Valle, MD (Renalin Malvar-Ledda)
Patient and Public Relations: Brett R. Levine, MD, MS (Denise Smith Rodd)
Practice Management: Louis S. Stryker, MD (Joshua Kerr)
Program: James A. Browne, MD (Sigita Wolfe)
Publications: Samuel S. Wellman, MD (Denise Smith Rodd)
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: Jeffrey K. Lange, 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.