1. Department of Osteonecrosis of the Femeral Head Luoyang Orthopedics Hospital of Henan Province Luoyang P.R. China
2. Department of Hip Injury Luoyang Orthopedics Hospital of Henan Province Luoyang P.R. China
3. TianXinFu Medical Appliance Co., Ltd Beijing P.R. China
4. Department of Osteoarthritis Luoyang Orthopedics Hospital of Henan Province Luoyang P.R. China