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Table 2 Distribution of the Lordosis of each intervertebral disc space in the four Roussouly subtypes

From: Correlation between lumbar intervertebral disc height and lumbar spine sagittal alignment among asymptomatic Asian young adults

IDH L1/2 L2/3 L3/4 L4/5 L5/S1
Type I 3.758 ± 2.606 6.455 ± 2.548 8.212 ± 3.072 13.273 ± 3.824 10.424 ± 4.221
Type II 3.354 ± 2.586 6.562 ± 2.915 8.875 ± 3.509 13.229 ± 4.283 11.083 ± 4.877
Type III 3.955 ± 2.567 7.015 ± 2.602 9.939 ± 2.763 14.167 ± 3.595 11.560 ± 4.412
Type IV 4.727 ± 2.926 8.045 ± 3.022 12.045 ± 1.551 16.091 ± 3.218 15.136 ± 3.442