Dr William Garrett is Professor of Surgery (Orthopaedics) and Team Physician for Duke University. He is widely involved in the medical aspects of top level sports, and his clinical activities focus on arthroscopic and reconstructive surgery on the knee and shoulder. Dr Garrett has specific training in cartilage and meniscal repair surgeries including cartilage restoration and meniscal allograft transplantation and reconstruction. Dr. Garrett is the author of over 100 manuscripts in referred journals, editor of 10 books, and over 50 book chapters and is the recipient of numerous medical awards. He serves on numerous academic and sports medicine organisations: Current President - American Orthopaedic Society for Sports Medicine Director - American Board of Orthopaedic Surgery Committee member - Research Committee of the American Board of Orthopaedic Surgery Committee member - American Academy of Orthopaedic Surgeons Committee member - American Orthopaedic Society for Sports Medicine Committee member - the International Olympic Committee Committee member - the American College of Sports Medicine For the past 14 years he has served as the Medical Director of the United States Soccer Federation, Chairman of the Physical Fitness, Sports Medicine and Research Committee and Team Physician for the Men's and Women's National Teams. Special knee interests include knee instability or ligament tears (especially ACL, PCL and multiligament injuries). Dr Garrett is currently conducting basic and clinical studies on anterior cruciate ligament (ACL) injuries in athletes, particularly in better understanding the differences between ACL injuries in men and women.