1. Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
2. Department of Orthopaedic Surgery, Tohoku Central Hospital
3. Sendai Orthopaedic Hospital
4. Department of Orthopaedic Surgery, Sendai Nishitaga Hospital
5. Department of Orthopaedic Surgery, Ishinomaki Red Cross Hospital
6. Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University
7. Department of Orthopaedic Surgery, Takeda General Hospital
8. Department of Orthopaedic Surgery, Tohoku Rosai Hospital
9. Department of Radiology, Tohoku Central Hospital