1. Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890‑8520, Japan
2. Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890‑8520, Japan
3. Department of Clinical Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima 890‑8544, Japan