Intradural rupture of lumbar intervertebral disc: report of three cases with review of the literature.

The intradural herniated disc is a rare complication of disc herniation. A study of the literature shows that this location is often responsible for severe neurological deficit with loss of sphincter control and a complete block shown on the myelogram. We report three cases to demonstrate the radioclinical interpretation of intradural herniated disc and the possibility of definite and misleading symptoms.