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Knowing the anatomic variations of foramen ovale is important because surgical treatment of trigeminal neuralgia is most commonly accomplished by microvascular decompression by percutaneous trigeminal rhizotomy.
Percutaneous controlled radiofrequency trigeminal rhizotomy for the treatment of idiopathic trigeminal neuralgia: 25 year experience with 1600 patients.
14,28,29] The risk of full or partial sensory deficit as a result of trigeminal rhizotomy must be weighed against the intolerance to the medical management of TN pain.