1. Department of Orthopaedic Surgery, Ogikubo Hospital, Suginami-ku, Tokyo, Japan
2. Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
3. Department of Orthopaedic Surgery, Tokyo Saiseikai Central Hospital, Tokyo, Japan
4. Department of Orthopaedic Surgery, National Hospital Organization Saitama Hospital, Wako, Saitama, Japan
5. Department of Orthopaedic Surgery, Kawasaki Municipal Hospital, Kawasaki, Japan
6. Department of Orthopaedic Surgery, School of Medicine, International University of Health and Welfare, Tokyo, Japan
7. Institute for Integrated Sports Medicine, Keio University School of Medicine, Tokyo, Japan