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2591 pages added, reviewed or updated during the last month (last updated: 16/4/2021)


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About 70% of lumbar disc protrusions occur at the L5/S1 level, thus compressing the first sacral root, and about 25% at the L4/5 level, compressing the fifth lumbar root.

Presentation differs according to whether the protrusion is lateral or central - cauda equina syndrome.

Last reviewed 10/2020

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