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Fig. 4 | BMC Musculoskeletal Disorders

Fig. 4

From: Mild (not severe) disc degeneration is implicated in the progression of bilateral L5 spondylolysis to spondylolisthesis

Fig. 4

Colour coded compressive (−) and tensile (+) stress distribution in the annulus fibrosus of the L5-S1 disc in the mid discal plane at peak flexion (Fx) and extension (Ex) bending loads of 10 Nm. In both Fx and Ex bending, models with a 50% loss in disc height (Mild degen L5 lytic collapsed and Severe degen L5 lytic collapsed) recorded the greatest increase in compressive and tensile stresses from the baseline Intact state

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