1. Department of Radiology, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-Do 13620, South Korea.
2. Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-Do, South Korea.