[Non discal surgical sciatic neuralgia (author's transl)].

Non discal sciatic neuralgia accounts for 5 per cent of all cases of surgical sciatica. They are divided into four groups: central sciatica very seldom, cordal and root sciatica more common and truncal sciatica. These sciatica are dominated by atypical clinical features: atypical provoking factor, atypical character, atypical topography and therapy.

[Radio-anatomical study of the main trunk of the middle cerebral artery (author's transl)].

This work corroborates anatomical data well known since G. Lazorthes about the main trunk of the middle cerebral artery. The data are interesting in various fields: Sylvian aneurysms, big sphenoïd ridge meningiomas, extra-intra cranial micro neurosurgical anastomoses.