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Microvascular decompression for hemifacial spasm

F G Barker1, P J Jannetta, D J Bissonette

  • 1Department of Neurological Surgery, Presbyterian-University Hospital, University of Pittsburgh School of Medicine, Pennsylvania.

Journal of Neurosurgery
|February 1, 1995
PubMed
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Microvascular decompression offers a safe and effective long-term treatment for hemifacial spasm. This procedure provides excellent results for most patients, with a low complication rate, establishing its definitive role in managing this condition.

Area of Science:

  • Neurosurgery
  • Neurology

Background:

  • Hemifacial spasm is a neurological disorder characterized by involuntary facial muscle contractions.
  • Microvascular decompression (MVD) is a surgical treatment aimed at relieving the compression of cranial nerves.

Purpose of the Study:

  • To evaluate the long-term efficacy and safety of microvascular decompression for hemifacial spasm.
  • To identify factors influencing surgical outcomes and complications.

Main Methods:

  • Retrospective analysis of 782 MVD procedures in 703 patients with hemifacial spasm.
  • Prospective follow-up using annual questionnaires for up to 20 years.
  • Kaplan-Meier survival analysis and Cox proportional hazards modeling for outcome assessment.

Main Results:

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  • 84% excellent and 7% partial success rates at 10 years post-MVD in patients without prior surgery.
  • Men and patients with typical symptom onset showed better outcomes.
  • Low complication rates: 2.6% ipsilateral deafness, 0.9% severe facial weakness; 0.1% operative mortality.

Conclusions:

  • Microvascular decompression is a safe and definitive treatment for hemifacial spasm with durable long-term efficacy.
  • Surgical outcomes are influenced by patient sex and symptom presentation.
  • Reoperation success is limited, underscoring the importance of primary MVD success.