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Intracranial Longitudinal Splitting of Facial Nerve: A New Approach for Hemifacial Spasm

A new surgical technique for the treatment of hemifacial spasm consisting of longitudinal splitting of the facial nerve in the cerebellopontine angle is described. Thirty-three cases have been treated with good results. Follow-up of 20 cases for 1 year or more showed no recurrence or facial paresis. One case required a second operation. The novelty of this approach lies in its effectiveness in relieving the symptoms without running the risk of overmanipulating the aberrant artery.