1. Section of Knee Surgery and Sports Medicine, Department of Orthopaedic Surgery, Hokkaido University School of Medicine
2. Section of Rehabilitation, Shin-Sapporo Orthopaedic Hospital, Sapporo, Japan
3. Section of Knee Surgery and Sports Medicine, Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Section of Knee Surgery and Sports Medicine, Department of Orthopaedic Surgery, Hokkaido University School of Medicine