1. Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, 050051, Hebei, P. R. China
2. Orthopaedic Institution of Hebei Province, Shijiazhuang 050051, Hebei, China
3. School of Medicine, Nankai University, Tianjin, 300071, China
4. Trauma Medical Center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
5. The People's Hospital, Shijiazhuang, 050051, Hebei, P. R. China
6. Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China