Electrodiagnostic studies in the evaluation of peripheral nerve and brachial plexus injuries.

Electrodiagnostic studies constitute the most objective and quantitative means of evaluating and sequentially following patients with traumatic peripheral nerve injuries. They can be used to localize the lesions, determine the predominant underlying pathology, estimate the extent and severity of the axonal degeneration, and follow recovery. In addition, intraoperative studies may prevent unnecessary surgery and prevent unnecessary delays if surgery is indicated. Peripheral nerve trauma should not be managed at any center where high quality electrodiagnosis is unavailable.