1. Objective To investigate the mechanism, diagnosis and treatment of the combination compression of dorsal scapular nerve and long thoracic nerve.

2. The Brachial plexus is a network of nerves (formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1).This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit.It supplies afferent and efferent nerve fibers to the chest, shoulder, arm, forearm, and hand.