[1] Nara Med Univ, Dept Orthopaed Surg, 840 Shijo Cho, Kashihara, Nara 6348521, Japan
[2] Nara Med Univ, Dept Rehabil Med, 840 Shijo Cho, Kashihara, Nara 6348521, Japan
[3] IRCCS Ist Ortoped Rizzoli, Dept Radiol & Intervent Radiol, Via Pupilli 1, I-40136 Bologna, Italy
[4] Natl & Kapodistrian Univ Athens, Sch Med, Dept Orthopaed 1, 41 Ventouri St, Athens 15562, Greece