1. School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, P. R. China
2. Department of Orthopedics, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang 330006, P. R. China
3. Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, 330008, P. R. China