[Myelography in midline hernias of lumbar intervertebral disks].

The results of Dimerix myelography in 42 patients with median Schmorl's bodies in the lumbar segment were studied. Total or partial obstruction of the vertebral canal on one or two levels was a distinguishing X-ray sign in this group of patients. The clinical picture and the myelographic signs of Schmorl's bodies were compared with the operative findings. Depending on the size of the herniation, the patients were subjected to wide laminectomy, hemilaminectomy, but mainly to bilateral fenestration on one or two levels. The results of myelography were confirmed during operation.