颅后窝神经血管减压术治疗半侧面肌痉挛

机械性压迫是半侧面肌痉挛的主要原因,本组4例的症状是典型的,我们应用血管减压术治疗这些病人。其中3例是内听动脉袢压迫,另1例是异常静脉。将动脉袢悬吊在颅后窝的硬脑膜上的2例,把明胶海绵置于面神经和动脉或静脉之间的2例。术后症状均消失,其中1例发生一过性面瘫。3例随访2个月—5年,无症状复发。

POSTERIOR FOSSA MICROVASCULAR DECOMPRESSION IN THE TREATMENT OF HEMIFACIAL SPASM

Mechanical compression is an important cause of hemifacial spasm. The 4 patient included in this series had typical symptoms and were treated with microvascular decompression. In 3 of them, the vascular compression was attributed to internal auditory artery loop, and in the other one to venous abnormality. Two patients were treated by hanging the artery loop on the dura matter in posterior fossa, and in the other 2 by means of placing gelatin sponge between facial nerve and the related blood vessel ( artery and vein respectively). Symptoms disappeared after operation, temporary facial paralysis occurred in 1 case. Three patients were followed-up two months to 5 year, with no recurrence of symptoms reported.