1. Department of Orthopaedics, The Second Affiliated Hospital of Kunming Medical University, China
2. Department of Orthopaedics, The People’s Hospital of XiShuangBanBa State, China
3. Department of Orthopaedics, The People’s Hospital of Dehong State, China
4. Department of Orthopaedics, The People’s Hospital of Longchuan County, China.