1. Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
2. Department of Anatomy College of Basic Medicine, Second Military Medical University, Shanghai, 200433, China
3. Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Material Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
4. Department of Orthopaedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China