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Thecal sac indentation due to disc herniation. What does it mean?

what does mean thecal sac indentation with right lateral recess and neural foraminal narrowing at L4-5 level due to disc herniation,osteophytosis,flaval and facet hypertrophy at the same level.Mild posterolateral osteophytosiswith abutting disc are causing mild bilateral neural foraminal narrowing at L3-4 level.This Impression shows Degenerative Disc Disease by MRI.
Asked On : Sun, 3 Mar 2013
Answers:  1 Views:  614
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Spine Surgeon 's  Response
Welcome to HCM.
Thecal sac is the outer covering of the spinal cord and indentation means the disc has displaced posteriorly and touching the covering. It may indicate spinal canal stenosis. foraminal and lateral recess stenosis may compromise the nerve space and causing the leg pain, tingling and numbness. Thanks.
Answered: Mon, 4 Mar 2013
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