1. Department of Orthopedics, Chengdu Second People's Hospital, Chengdu, Sichuan 610017, P.R. China
2. Department of Human Anatomy and Histoembryology, Zhuhai Campus of Zunyi Medical University, Zhuhai, Guangdong 519041, P.R. China
3. Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China