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半面痉挛（HFS）病因机理不清，有神经冲动短路、局部癫痛、微血管压迫学说，尚无特效药物治疗。本文报告经鼓室探查术进路行面神经水平段减压术治疗HFS6例，平均随访1.2年，显效4例，复发2例，但程度减轻。5例术中未分离砧镫关节，听力不变。HFS行水平段神经梳理术不复杂，安全有效，是多种手术疗法中可取的一种。作者介绍提高手术效果的几点经验：①鼓室探查术外耳道鼓膜皮瓣比常现大一点，有利于暴露面神经水平段；②镫骨上层结构及砧镫关节是定位面神经骨管的重要标志；③为保持听力，一般不要分离砧镫关节；④面神经水平段骨管近卵圆窗缘较薄，可用细钩针挑开；⑤根据面痉挛病程和痉挛程度的不同，进行不同强度的梳理；⑥对病情顽固者，可行第二次梳理术。
Hemifacial spasm (HFS) unclear etiology, nerve impulse short circuit, local epilepsy, microvascular pressure doctrine, there is no specific drug treatment. This article reports tympanometry into the line of facial nerve decompression surgery for HFS6 cases, average follow-up 1.2 years, 4 cases markedly, 2 cases of recurrence, but to a lesser extent. Five cases were not separated anvils and ankle joints, hearing the same. HFS horizontal line of nerve carding is not complicated, safe and effective, is a desirable variety of surgical treatment. The authors introduce some experience to improve the surgical results: ① tympanic exploration of the external auditory canal tympanic membrane flap larger than usual, which is conducive to expose the level of facial nerve; ② tarsal superstructure and anvil tarsal joint is an important sign of positioning the facial nerve tube; ③ In order to maintain the hearing, generally do not separate the anvil joint; ④ Facial nerve level segment near the edge of the oval window margin is thin, can be used to open a fine crochet; ⑤ according to the degree of spasm and spasticity of different degrees, different intensity carding; Persistent condition, feasible second carding surgery.