1995年 1月～ 1 997年 1 2月 ,我科对因三叉神经痛或半面痉挛行脑神经根减压术后复发的 7例患者 ,行第 2次乙状窦后进路手术治疗 ,现报告如下 ,并对复发原因进行分析。1　资料与方法7例中 ,男 2例 ,女 5例 ;年龄 35～ 65岁 ,平均52 .7岁。三叉神经痛 6例 ,半面痉挛 1例。首次手 January 1995 ~ January 1997 1 2 months, our department for trigeminal neuralgia or hemifacial spasm after craniofacial decompression surgery recurrence of 7 patients underwent the second sigmoid sinus approach surgery, the report is now As follows, and analyze the causes of recurrence. 1 Materials and Methods 7 cases, 2 males and 5 females; aged 35 to 65 years, mean 52.7 years. Trigeminal neuralgia in 6 cases, hemifacial spasm in 1 case. First hand