Lumbar intradural disc herniation

A 60 year old man presented with chronic backache of six months duration, sciatica of three months duration, weakness of both lower limbs of two months duration, urinary retention and bowel incontinence of one month duration. Neurologically, he hadparaplegia with motor and sensory level at L1 dermatome. X-ray lumbar spine showed spondylotic changes with reduction of L1/L2 disc space.Myelography revealed an intradural mass. A diagnosis of intradural disc herniation was made and confirmed by surgery.However, neurological status remained unchanged at the time of discharge.