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A member asked:
Is thecal sac impingement at l4-l5 the same as lumbar stenosis?
A doctor has provided 1 answer
Lumbar Stenosis refers generally to narrowing of the lumbosacral cistern at several levels. An L4-5 "thecal sac impingement" refers to a solitary level disc protrusion or herniation, large enough to contact the thecal sac and perhaps deform the contours.
Answered 8/29/2021
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