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Arq Neuropsiquiatr. 2003 Jun;61(2B):434-40. Epub 2003 Jul 28.

[Trigeminal radiofrequency rhizotomy for the treatment of trigeminal neuralgia: results and technical modification].

[Article in Portuguese]

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Serviço de Neurocirugia do Hospital Luxemburgo - Belo Horizonte MG, Brasil.


The purpose of this study was to evaluate the efficacy of radiofrequency trigeminal rhizotomy in treating 135 patients harboring trigeminal neuralgia, and to introduce a technical modification to guide the puncture of the foramen ovale. A hundred and one (74.8%) patients were treated with a single surgical procedure whereas the 34 (25.2%) remaining patients required two procedures. Follow-up ranges from 6 months to 15 years. Pain relief in the immediate postoperative was achieved in 131 (97.0%) patients. After the initial procedure, recurrence happened in 33 (24.5%) patients. The complications included decrease corneal reflex (4.4%), masseter paresis (2.2%), painful dysesthesia (1.5%) and anesthesia dolorosa (0.7%). The radiofrequency trigeminal rizhotomy is a low risk, highly effective and minimally invasive procedure. The use of the computerized tomography guided fluoroscopy turns foramen ovale's puncture easier, fast and precise.

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