1. Department of Orthopedic Surgery; Kitasato University School of Medicine; 1-15-1 Kitasato, Minami-ku, Sagamihara Kanagawa 252-0570 Japan
2. Department of Bioimaging Center; Kitasato University School of Medicine; Sagamihara Japan
3. Department of Orthopedic Surgery; Tokyo Women's Medical University School of Medicine; Shinjuku Japan
4. Department of Orthopedic Surgery; Chiba University Graduate School of Medicine; Chiba Japan
5. Department of Orthopedic Surgery; Chiba Children's Hospital; Chiba Japan
6. Department of Orthopedic Surgery; Toho University Sakura Medical Center; Sakura Japan