1. Department of Orthopaedic Surgery; The Fourth Affiliated Hospital of Harbin Medical University; Harbin 150001 People's Republic of China
2. Department of Outpatient; The Fourth Affiliated Hospital of Harbin Medical University; Harbin 150001 People's Republic of China
3. Department of Orthopaedic Surgery; The Second Affiliated Hospital of Harbin Medical University; Harbin 150001 People's Republic of China