1. Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
2. Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
3. Department of Orthopaedic Surgery, Tianjin Hospital, Tianjin 300211, China
4. Department of Orthopaedic Surgery, Peking University Third Hospital, Haidian District, Beijing 100191, China
5. Department of Orthopaedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongqing 400016, China