[Vascular relationships of the trigeminal root with trigeminal neuralgia].

The vascular relationships of 79 trigeminal nerves exposed surgically for treatment of trigeminal neuralgia were studied. 87 etiologic vessels (vein in 28, artery in 59) were found and the most common arterial and venous etiologic vessel was the superior cerebellar artery (33/59) and petrous vein (16/28) respectively. The result provided some clinic data for microvascular decompression in treatment of idiopathic trigeminal neuralgia.