1. Department of Orthopedic Surgery, the First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong, China
2. Department of Geriatrics, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
3. Department of Orthopedic Surgery, Shandong First Medical University, Jinan, Shandong, China
4. Department of Orthopedic Surgery, Shangdong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China