The increase in the frequency of car accidents in the previous century was associated with significant increase in injuries to shoulder interference. Currently, new visualization research is available to evaluate nerve shoulders injuries. Myelography, CT myelography, and magnetic resonance imaging (MRI) are indicated in the evaluation of the brachial plexus. Furthermore, a number of specialized electrodiagnostic and neuroconduction studies, in combination with clinical findings during the neurologic examination, can provide information about the location of the lesion, the severity of the injury, and the expected clinical outcome. Improvements in diagnostic approaches and microsurgical techniques have radically changed the prognosis and functional outcomes of these injuries.