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Minim Invas Neurosur · Sep 1995
Case ReportsIntradural lumbar disc herniations: report of three cases.
- F J Prestar and H H Schattke.
- Neurosurgical Clinic, Bundesknappschaft, Knappschaftskrankenhaus Bergmannsheil, Gelsenkirchen-Buer, Germany.
- Minim Invas Neurosur. 1995 Sep 1; 38 (3): 125-8.
AbstractIntradural lumbar disc herniation is a rare pathological entity. Three new cases among a series of 5000 lumbar spine operations are added to the about 60 previous case reports in the literature. None of our patients had undergone lumbar spine surgery before. In one patient the location of the free disc fragment was medial within the dural sac; in two patients the free disc fragment had penetrated the dural sac from the axilla of the nerve root. Pathogenesis is discussed (congenital adhesions of the dura mater to the posterior longitudinal ligament at the lower lumbar spine; weakness of the dura mater ventrally and at the axilla of the nerve root). By multiplanar MRI, the free disc hernia within the dural sac may be shown preoperatively.
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