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Anatomical explanation | Why are upper lumbar nerve roots less frequently affected by disc problems, while lower lumbar segments are more frequently involved?

The majority of symptomatic disc herniations are found at the lower two lumbar interspaces, that is, about 50% at L4–5 and 47% at L5-S1 (1). The remaining 3% are found at higher lumbar levels (1). A r...

Abd El-Rahman Taha

January 7, 2023

Browsing Tag: Neurology

Anatomical explanation | Why are upper lumbar nerve roots less frequently affected by disc problems, while lower lumbar segments are more frequently involved?