Affiliation: | 1. Department of Orthopaedics, Division of Sports Medicine, Virginia Commonwealth University, Henrico, Virginia, U.S.A.;2. Department of Orthopedic Surgery, Division of Sports Medicine, Gundersen Health System, La Crosse, Wisconsin, U.S.A.;3. Steadman Philippon Research Institute, Vail, Colorado, U.S.A. |