1. Department of Orthopedics
2. General Hospital of PLA
3. Beijing 100853
4. China
5. Department of Rehabilitation
6. Beijing Rehabilitation Hospital
7. Capital Medical University
8. Beijing
9. State Key Laboratory of Materials
10. Department of Materials Science and Engineering
11. Zhejiang University
12. Hangzhou 310027
13. ZhongAoHuiCheng Technology Co.
14. Beijing 100176