1. Department of Orthopedics
2. Shanghai Jiao Tong University Affiliated Sixth People's Hospital
3. Shanghai 200233
4. China
5. State Key Laboratory of High Performance Ceramics and Superfine Microstructure
6. Shanghai Institute of Ceramics
7. Chinese Academy of Sciences
8. Shanghai 200050
9. Department of Orthopaedics and Traumatology
10. The University of Hong Kong
11. P. R. China