Affiliation: | 1. Department of Orthopaedic Surgery, Henry Ford Hospital, Detroit, Michigan, U.S.A.;2. Wayne State University School of Medicine, Detroit, Michigan, U.S.A.;3. Dayton University, Dayton, Ohio, U.S.A.;4. Department of Orthopaedic Surgery, Kerlan Jobe Clinic, Los Angeles, California, U.S.A. |