[Transdural rupture of lumbar intervertebral disk prolapse].

Prolapses of intervertebral disks with intradural localisation are extremely rare. Up to 1981, a total of 41 cases have been published in the world literature. A report is given on two further patients in whom intradural sequesters of intervertebral disks were found during the operation. In one patiente there were at the same time two total intrathecal sequesters from the intervertebral spaces L 3/4 and L 4/5. Until now, no reports have been published on such cases in the world literature.