1. Department of Orthopaedic Surgery Osaka University Graduate School of Medicine Suita Japan
2. Department of Orthopaedic Surgery Kawachi General Hospital Higashiosaka Japan
3. Department of Orthopaedic Surgery Yao Municipal Hospital Japan
4. Musculoskeletal Oncology Service Osaka International Cancer Institute Japan
5. Department of Orthopaedic Surgery Toyonaka Municipal Hospital Japan