1 Department of Orthopaedic Surgery, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China; Department of Orthopaedics, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, People's Republic of China.
2 Department of Orthopaedic Surgery, Shaoxing Hospital of Traditional Chinese Medicine, Shaoxing, China.
3 Department of Orthopaedic Surgery, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, People's Republic of China; Department of Orthopaedics, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, People's Republic of China. Electronic address: draifeng@163.com.