Abstract
We report two cases of trigeminal neuralgia generated by torsion or kinking of the nerve, demonstrated on CISS images. Both of them were treated by straightening of the nerve via key-hole surgery successfully. Common intraoperative findings were deformity of the neural axis due to tethering by thickened arachnoid around the trigeminal nerve. As the operative effect was developed soon after the surgery, ephatic conduction made by transform was corrected by surgery.
