Affiliation: | 1. Department of Orthopaedic Surgery, Hoshigaoka Medical Center, 4-8-1, Hoshigaoka, Hirakata, Osaka, 573-8511, Japan;2. Department of Orthopaedic Surgery, Moriguchi Keijinkai Hospital, 2-47-12, Yagumohigashimachi, Moriguchi, Osaka, 570-0021, Japan;3. Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, 565-0871, Osaka, Japan |