Tung Wah Hospital 1 article published in JoVE Neuroscience Screening of Axonal Degeneration in Carpal Tunnel Syndrome Using Ultrasonography and Nerve Conduction Studies Xue Deng1, Lai-Heung Phoebe Chau2, Suk-Yee Chiu2, Kwok-Pui Leung3, Yong Hu1, Wing-Yuk Ip1 1Department of Orthopedics & Traumatology, The University of Hong Kong, 2Clinical Electro-diagnostic Unit, Tung Wah Hospital, 3Department of Medicine, The University of Hong Kong Here we present a protocol using nerve conduction studies and ultrasound to screen potential axonal degeneration associated with carpal tunnel syndrome. The criteria for differentiation are established. Compared to conventional approaches, this method is noninvasive, convenient, and efficient, with an overall satisfactory accuracy, sensitivity, and specificity.