1. Department of Orthopaedic Surgery, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
2. Gachon Medical Research Institute, Gil Medical Center, Gachon University, Incheon, Korea.
3. Department of Orthopaedic Surgery, The Second Hospital of Jilin University, Changchun, China.
4. Department of Radiology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.