1 Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, People's Republic of China; Hebei Provincial Orthopedic Biomechanics Key Laboratory, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, People's Republic of China.
2 Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, People's Republic of China; Hebei Provincial Orthopedic Biomechanics Key Laboratory, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, People's Republic of China. Electronic address: zjk20019@126.com.