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2499 pages added, reviewed or updated during the last month (last updated: 18/4/2021)

2499 pages added, reviewed or updated during the last month (last updated: 18/4/2021)


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disc prolapse (intervertebral)

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Prolapsed intervertebral disc is a condition where the gelatinous nucleus pulposus squeezes through the annulus fibrosus and bulges in a posterior or posterolateral direction, beneath the posterior longitudinal ligament. This causes pressure symptoms on the root below the level of herniation - most commonly S1, then L5, then L4. Other defects are rarer, and higher defects ought to be investigated for other causes.

Last reviewed 01/2018

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