1. Nara Medical University Graduate School, Kashihara Nara, Japan.
2. Department of Orthopaedic Surgery, Nara Medical University, Kashihara Nara, Japan.
3. Department of Sports Medicine, Nara Medical University, Kashihara Nara, Japan.
4. Osaka Sangyo University, Osaka, Japan.
5. Department of Orthopaedic Surgery, Kishima Hon-in Hospital, Osaka, Japan.