Affiliation: | 1. Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, Gyeonggi-do, South Korea;2. Department of Orthopaedic Surgery, Gachon University, Gil Hospital, Incheon, South Korea;3. Department of Orthopaedic Surgery, Barunsesang Hospital, Seongnam, South Korea;4. Department of Orthopaedic Surgery, Ilsan Paik Hospital, Inje University, Ilsan, South Korea |