1. Department of Joint Surgery and Sport Medicine Tokyo Medical and Dental University Tokyo Japan
2. Department of Orthopaedic Surgery Kawaguchikogyo General Hospital Saitama Japan
3. Department of Orthopaedic Surgery Doai Memorial Hospital Tokyo Japan
4. Department of Orthopaedic Surgery Tama‐Hokubu Medical Center Tokyo Japan
5. Department of Orthopaedic Surgery Nerima General Hospital Tokyo Japan
6. Department of Orthopaedic Surgery Hokusuikai Kinen Hospital Ibaraki Japan