1. Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo 650‑0017, Japan
2. Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo 650-0017, Japan
3. Department of Orthopaedic Surgery, Hyogo Cancer Center, Akashi, Hyogo 673‑0021, Japan
4. Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Hyogo 650‑0017, Japan