The fate of the facial nerve and its function in 46 cases of acoustic neuroma is described along with the techniques for preserving the nerve or its reconstruction by extrapetrous graft or direct anastomoses in the posterior fossa. Radical intracapsular removal of the tumor was done in eight cases with preservation of facial action. There were only four small tumors but the nerve and its function could be saved in all but one where the tumor was en plaque. In a series of 34 complete removals of large tumors, the facial nerve was deliberately sacrificed in only six cases. The nerve was saved in continuity in 17 cases. In seven cases direct anastomosis of the divided ends was carried out in the posterior fossa; satisfactory facial action returned in four.
Drake CG. Facial Function After Intracranial Repair of Facial Nerve. Arch Otolaryngol. 1972;95(5):420–425. doi:10.1001/archotol.1972.00770080656005
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