1. Department of Orthopedic Surgery, Xijing Hospital, the Air Force Military Medical University, Xi’an 710032, China
2. State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3. Rapid Manufacturing Research Center of Shaanxi Province, Xi’an Jiaotong University, Xi’an 710049, China
4. Shaanxi Province Hospital of Traditional Chinese Medicine, Xi’an 710018, China