Lumbar Disc Degeneration

TLDR

The study correlated macroscopic disc degeneration grades with age, sex, and spinal level across 600 lumbar discs from 273 cadavers, using data from 16 published reports. Male discs were more degenerated than female discs—especially in the second, fifth, sixth, and seventh decades—and L4‑L5 and L3‑L4 levels showed greater degeneration than other lumbar levels, findings that align with radiographic data and suggest that higher mechanical stress and longer nutritional pathways may drive earlier degeneration in males.

Abstract

Using data from 16 published reports, the authors correlated macroscopic disc degeneration grades with age, sex, and spine level In 600 lumbar Intervertebral discs from 273 cadavers (ages: 0–96 years). Male discs were more degenerated than female discs at most ages; significantly so In the second, fifth, sixth, and seventh decades. On average, L4-L5 and L3-L4 level discs showed more degeneration than discs at other lumbar levels. These macroscopic findings corroborate radio-graphic data from epldemlologlc studies. The calculations suggest that higher mechanical stress, perhaps combined with longer nutritional pathways, may be responsible for the earlier degeneration of male discs.