1 Department of Orthopaedic Surgery, Yonsei University College of Medicine, Severance Hospital, Seoul, Republic of Korea.
2 Department of Orthopaedic Surgery, Ace Hospital, Ansan, Republic of Korea.
3 Department of Orthopaedic Surgery, Arthroscopy and Joint Research Institute, Yonsei University College of Medicine, Severance Hospital, Seoul, Republic of Korea.