Microvascular decompression for atypical hemifacial spasm: lessons learned from a retrospective study of 12 cases

摘要

OBJECTIVE Typical hemifacial spasm (HFS) commonly initiates from the orbicularis oculi muscle to the orbicularis oris muscle. Atypical HFS (AHFS) is different from typical HFS, in which the spasm of muscular orbicularis oris is the primary presenting symptom. The objective of this study was to analyze the sites of compression and the effectiveness of micro vascular decompression (MVD) for AHFS.