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KMID : 1001920070420050355
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Journal of Korean Neurosurgical Society
2007 Volume.42 No. 5 p.355 ~ p.362
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A Neurosurgical Perspective
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Kong Doo-Sik
Park Kwan
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Abstract
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Hemifacial spasm (HFS) is characterized by tonic clonic contractions of the muscles innervated by the ipsilateral
facial nerve. Compression of the facial nerve by an ectatic vessel is widely recognized as the most common
underlying etiology. HFS needs to be differentiated from other causes of facial spasms, such as facial tic, ocular
myokymia, and blepharospasm. To understand the overall craniofacial abnormalities and to perform the optimal
surgical procedures for HFS, we are to review the prevalence, pathophysiology, differential diagnosis, details
of each treatment modality, usefulness of brainstem auditory evoked potentials monitoring, debates on the
facial EMG, clinical course, and complications from the literature published from 1995 to the present time.
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KEYWORD
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Hemifacial spasm, Microvascular decompression, Craniofacial abnormalities
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