Figure 5
From: Lumbar lordosis morphology correlates to pelvic incidence and erector spinae muscularity
The graphs show the correlation between pelvic incidence and lumbar lordosis morphology. Across the stratification by PI value, from very low PI to high PI group, lumbar lordosis increases, and lumbar lordosis apex migrates higher. A with very low PI, PI = 21°, LL apex = L5/S1, LL = −30°, PLL = −1°; B with low PI, PI = 39°, LL apex = L4/5, LL = −38°, PLL = −7°. C with moderate PI, PI = 53.0°, LL apex = L4, LL = −60°, PLL = −20°. D with high PI, PI = 64°, LL apex = L3/4, LL = −70°, PLL = −28°. PI pelvic incidence, LL apex, lumbar lordosis apex, LL lumbar lordosis, PLL proximal lumbar lordosis.
