1. Department of Rehabilitation Medicine, Third Hospital of Hebei Medical University, China
2. Hebei Provincial Orthopedic Biomechanics Key Laboratory, China
3. Depatrtment of Orthopedics, Cangzhou Central Hospital, China
4. Department of Joint Surgery, Third Hospital of Hebei Medical University: No. 139 Ziqiang Road, 050051 Shijiazhuang, Hebei, China