1. Department of Orthopaedic Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan;
2. Department of Orthopaedic Surgery, Takayama Red Cross Hospital, Gifu, Japan;
3. Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan;
4. Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Gifu, Japan