Abstract
Trapezius muscle palsy after accessory nerve injury leads to periscapular pain and shoulder motion deficit. The results of accessory nerve repair generally are good, but surgery is difficult. The difficulty consists of finding the nerve stumps that are embedded in fat and scar tissue from previous surgeries or injuries. Five patients with accessory nerve lesions had surgery and grafting of the accessory nerve. We dissected the proximal stump of the accessory nerve within the fibers of the sternocleidomastoid muscle and in the vicinity of the greater auricular nerve. To achieve dissection of the distal nerve stump, the deep cervical fascia was detached from the trapezius muscle 3 cm cephalad to the clavicle. The detached fascia and the trapezius muscle were flipped similar to book pages. The motor branches entering the trapezius muscle were visualized and followed toward the accessory nerve. A sural nerve graft with a mean length of 6.6 cm was used for grafting. Uncomplicated identification of the nerve stumps was possible in all patients. After accessory nerve grafting, pain and motion consistently improved in all patients. The technique proposed here ensures reliable and rapid identification of the divided stumps of the accessory nerve.
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