In this retrospective investigation 7 patients operated on for recurrent tr
igeminal neuralgia via a suboccipital enlarged burr hole trepanation were e
valuated. The intraoperative findings indicate that neo-compressive effects
due to foreign material used during prior surgery are more important than
adhesions around the nerve. Furthermore, the results of recurrent operation
s are encouraging as 6 of the 7 patients were painfree without additional n
eurological deficits.