1Department of Orthopaedics and Traumatology, Yangjiang People's Hospital, Yangjiang, China
2Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Guangzhou, China
3Department of Orthopaedics and Traumatology, Queen Mary Hospital, The University of Hong Kong, Pok Fu Lam, Hong Kong