早在1934年Dandy首先注意到,小脑桥脑角解剖和病理组织结构压迫三叉神经可引起疼痛.本文作者从临床角度探讨了52例原发性三叉神经痛时小脑桥脑角的手术所见.手术取侧卧位,经乳突后颅骨小范围切除行小脑桥脑角探查.均在手术显微镜下操作.手术所见:动脉袢压迫三叉神经并使之移位者37例占71%.有2例动脉袢与神经接近但未接触.压迫神经最常见的动脉是小脑上动脉,本组有 As early as 1934, Dandy first noticed that trigeminal nerve compression caused by the anatomy and pathological structure of the cerebellopontine angle can cause pain. The authors from the clinical point of view explored 52 cases of primary trigeminal neuralgia when the cerebellar pontine angle surgery. Surgery was performed in the lateral position, and the cerebellar pontine angle exploration was performed on a small scope of the skull after the mastoidectomy. All operations were performed under a surgical microscope. Seen from the operation: Arterial spasm compresses the trigeminal nerve and displaces it. 37 patients accounted for 71%. Two cases of arterial spasm were close to the nerves but not in contact. The most common arteries that compressed nerves were the superior cerebellar arteries.