title: Microvascular decompression for hemifacial spasm: a long-term follow-up of 1,169 consecutive cases.
abstract: We analyzed the records of 1,169 patients with hemifacial spasm (HFS) who underwent microvascular decompression (MVD) and were followed up for more than 6 months from January 1987. The mean follow-up duration was 23.8 months (6-145 months). Excellent surgical outcome was obtained in 90.5% and good in 4.5%, giving an overall success rate of 95.0%. There was statistically significant relationship between vertebral artery (VA) shift and side of symptom. Permanent facial weakness and hearing impairment were 1.4% and 2.3%, respectively. There were no anatomical differences at the root entry zone (REZ) and significant differences of surgical outcome in young HFS (34 patients). Factors such as type of offender, severity of compression on the facial nerve root, and the degree of decompression of the REZ on postoperative MRI did not correlate with surgical outcome.
authors.affiliation: Department of Neurosurgery, Brain Research Institute, Yonsei University College of Medicine, Seoul, Korea. sschung@yumc.yonsei.ac.kr
authors.forename: S S
authors.initials: SS
authors.lastname: Chung
authors.forename: J H
authors.initials: JH
authors.lastname: Chang
authors.forename: J Y
authors.initials: JY
authors.lastname: Choi
authors.forename: J W
authors.initials: JW
authors.lastname: Chang
authors.forename: Y G
authors.initials: YG
authors.lastname: Park
mesh_terms: D000328:Adult; D019299:Decompression, Surgical / Q000379:methods*; D005154:Facial Nerve / Q000503:physiopathology*; D005260:Female; D005500:Follow-Up Studies; D006319:Hearing Loss, Sensorineural / Q000209:etiology; D019569:Hemifacial Spasm / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008866:Microsurgery / Q000379:methods*; D009408:Nerve Compression Syndromes / Q000503:physiopathology / Q000601:surgery*; D017060:Patient Satisfaction; D011183:Postoperative Complications / Q000209:etiology; D012008:Recurrence; D012189:Retrospective Studies; D016896:Treatment Outcome; D014711:Vertebral Artery / Q000601:surgery*