[Modern technics for studying injuries of the lumbo-ischiatic plexus. Apropos of a new case]

A 22 year old patient was admitted with multiple lumbosacral root meningoceles following a motorbike accident. Because of the marked neurologic deficit in left lower limb a radiculographic exploration was completed by a CT scan, with improvement in analysis of images, post-traumatic pseudo-meningoceles being neither an absolute proof nor the unique lesion responsible for the clinical picture. They may be missing whereas the root is absent. Combining these two examinations provides for total screening of lesions and more selective choice of therapy.