Xifeng Zhang1, Shanrun Zhao2, Hui Zhang3. 1. Department of Rheumatology, Jiujiang No. 1 People's Hospital, Jiujiang, China. 2. Department of Bone and Joint Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Binhzou, China. 3. Department of Orthopedics, Jiangsu Province Hospital, Nanjing, China - qqq1242749942@163.com.