Yanjun Chen1, Kun He1, Zhifeng Xiao2, Dingkun Lin3. 1. The Second Clinical College of Guangzhou University of Chinese Medicine, Jichang Road No. 12, Guangzhou, 510405, People's Republic of China. 2. Department of Orthopaedics, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Dade Road No. 111, Guangzhou, 510120, People's Republic of China. 3. Department of Orthopaedics, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Dade Road No. 111, Guangzhou, 510120, People's Republic of China. lindingkuntcm@126.com.