1. Chinese PLA Medical School No. 28 Fuxing Road, Haidian District Beijing 100853 P. R. China
2. Institute of Orthopedics Chinese PLA General Hospital Beijing Key Lab of Regenerative Medicine in Orthopedics Key Laboratory of Musculoskeletal Trauma and War Injuries PLA No. 28 Fuxing Road, Haidian District Beijing 100853 P. R. China
3. Department of Bone and Joint Surgery Renji Hospital School of Medicine Shanghai Jiaotong University Shanghai 200030 P. R. China
4. Department of Orthopaedic Surgery Guangdong Provincial Key Laboratory of Orthopedics and Traumatology First Affiliated Hospital Sun Yat‐sen University No. 58 Zhongshan Second Road, Yuexiu District Guangzhou Guangdong 510080 P. R. China