Estimation of Median Nerve Axonal Degeneration without Needle Electromyography

Background and Aim: The present study aimed to use the median nerve Compound Muscle Action Potential (CMAP) amplitude by stimulation at palm instead of Abductor Pollicis Brevis (APB) needle Electromyography (EMG) for determining axonal loss in patients with Carpal Tunnel Syndrome (CTS). Methods Materials/Patients: This was performed on 180 CTS referred Electrodiagnostic (EDX) Center, Poursina Hospital, Guilan Province, Iran, 2018-19. In this study, APB EMG diagnostic test used as gold standard, CMAP wrist were compare two tests. Results: All cases abnormal detected also had an APB. So could be a good indicator if there is abnormality (sensitivity: 73%, specificity: 100%). results not accurate stimulation, some decreased normal muscle 86.6%, 94.9%). Conclusion: CTS, abnormally loss.