1. College of Materials Science and Engineering Key Laboratory of Advanced Materials of Yunnan Province Kunming University of Science and Technology Kunming Yunnan 650093 P. R. China
2. Department of Orthopedics The First People's Hospital of Yunnan Province Kunming Yunnan 650093 P. R. China
3. National Assets Management Department The First People's Hospital of Yunnan Province Kunming Yunnan 650093 P. R. China
4. School of Mechanical Engineering Institute for Advanced Materials Chengdu University Chengdu Sichuan 610000 P. R. China