1. Department of Orthopaedic Surgery, Fukuoka University Chikushi Hospital, Chikushino-shi, Fukuoka, Japan
2. Fukuoka University Faculty of Sports and Health Science, Jonan-ku, Fukuoka, Japan
3. Department of Orthopaedic Surgery, Fukuoka Seisyukai Hospital, Kasuya-gun, Fukuoka, Japan
4. Department of Orthopaedic Surgery, Fukuoka University Faculty of Medicine, Fukuoka, Japan.