The peripheral nervous system connects the superior nerve centers to muscles and sensory receptors. Most of the nerves that control the movement and sensitivity of the upper limb originate in the brachial plexus which is formed by the ventral roots of the cervical spinal nerves C5 to T1. Injuries in varying degrees cause loss of these functions. They are common in young adult population. The etiology that affects the peripheral nerves may be: acute injury (trauma), chronic injury (compression) and neoplasms. In 2010 and until April 2011, 10 patients were treated: 4 with mononeuropathy, 4 with plexopathy of traumatic etiology, and 2 brachial plexus tumor pathology. Current surgical repair include: neurorraphia, neurolysis, nerve grafts, neurotizations and free muscle transfers, whose main purpose is to restore sensory and motor function in essential areas of the upper limb. In relation to the characteristics of the injury, sets the ideal time and technique to per form surgical repair of the affected nerves. [ABSTRACT FROM AUTHOR]