Anatomic and topographic features of middle cranial fossa which should be taken into account during paracentetic access to sensory root of trigeminus are examined in the article. It is substantiated that treatment of trigeminus neuralgia needs bounded influence on sensory root of trigeminus. The authors based the idea of paracentetic access to sensory root of trigeminus through for. ovale. Such possible complexities and specific features as: probable confluence of for. ovale with other holes, calcification of ligamentous apparatus, and presence of holes due to this process should be considered during surgery.