Affiliation: | 1. Department of Orthopedic Surgery, Kashiwa City Kashiwa Hospital, 1-3 Fuse, Kashiwa, Chiba 277-0825, Japan;2. Department of Orthopedic Surgery, Tsukuba University, Tsukuba, Ibaraki, Japan;3. Department of Orthopedic Surgery, Chiba University Graduate School of Medicine, Chiba, Chiba, Japan |