1. Department of Orthopaedic Surgery, Dokkyo Medical University Saitama Medical Center, Koshigaya, Saitama, Japan
2. Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
3. Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital, Tokyo, Japan
4. Kawaguchikogyo General Hospital, Kawaguchi, Saitama, Japan
5. Doai Memorial Hospital, Tokyo, Japan