Affiliation: | 1. Department of Orthopaedic Surgery, Iwate Prefectural Central Hospital, Morioka, Iwate, Japan;2. Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Miyagi, Japan;3. Shoulder & Elbow Center, Funabashi Orthopaedic Hospital, Funabashi, Chiba, Japan;4. Department of Orthopaedic Surgery, Matsuda Hospital, Sendai, Miyagi, Japan |