1. Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
2. Department of Orthopedic Surgery, Meijo Hospital, Nagoya, Japan
3. Department of Orthopedic Surgery, Konan Kosei Hospital, Konan, Japan
4. Department of Orthopaedic Surgery, Anjo Kosei Hospital, Anjo, Japan