Tehran University of Medical Sciences Frontiers in Emergency Medicine 2717-3593 6 2 2021 08 01 e26 e26 Hosseinali Abdolrazaghi Department of Hand and Reconstructive Surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran Maryam Haghshomar Students’ Scientific Research Center, Tehran University ofMedical Sciences, Tehran, Iran Mohaddeseh Azadvari Department of Physical Medicine and Rehabilitation, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran 2021 05 27 2021 06 20 Damage to the brachial plexus branches is one of themost important events during traumatic events, whichmay cause various disabilities. Electrodiagnostic testing is the preferred method to evaluate the extent of damage to the brachial plexus following trauma. The case presented in this paper, is a 26-year-old man who had near normal function of pronator teres and flexor carpi radialis muscles on electrodiagnostic testing following a right upper limb severe blunt injury at the level of his arm. After surgical investigation, we found a rare variation in the proximal part of the median nerve. In this case, branches to the pronator teres muscle and flexor carpi radialis had emerged from the proximal section of themedian nerve in the armregion. This new variation holds important clinical implications especially in trauma patients presenting with weakness in forearmflexion. https://fem.tums.ac.ir/index.php/fem/article/view/764 https://fem.tums.ac.ir/index.php/fem/article/download/764/365