Surgical Treatment of Hemifacial Spasm Caused by the Compression of Internal Auditory Canal of Facial Nerve

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To make out the way to distinguish the offending vessels compressed the internal auditory canal part of the facial nerve.


The hemifacial spasm patients were treated of microvascular decompression surgery with neurophysiologic monitoring. The patients were found that the internal auditory canal of the facial nerves was fully compressed, and the records of surgery monitoring were analyzed.


All the patients were recorded the delay incubation period in electromyography monitoring, and all patients were hemifacial spasm free finally.


Some hemifacial spasms were caused by internal auditory canal compression, so during the operation, the authors should explore the whole course of the facial nerve and compress the internal auditory canal part with the aid of neurophysiologic monitoring.

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