1. Human Health Sciences, Graduate School of Medicine; Kyoto University; 53 Kawara-cho Shogoin, Sakyo-ku Kyoto 606-8507 Japan
2. Department of Rehabilitation Science; Hyogo University of Health Sciences; Kobe Japan
3. Department of Orthopaedic Surgery, School of Medicine; Gifu University; Gifu Japan
4. Department of Orthopaedic Surgery, Graduate School of Medicine; Kyoto University; Kyoto Japan