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Table 1 Distribution of IDH in each vertebral segment (through L1–L2 to L5–S1) for 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 8.276 ± 0.8697 9.063 ± 0.8253 9.814 ± 0.9908 10.56 ± 1.164 9.696 ± 1.138
Type II 8.094 ± 1.123 8.904 ± 1.139 9.688 ± 1.215 10.42 ± 1.446 9.556 ± 1.313
Type III 8.864 ± 1.257 9.848 ± 1.361 10.80 ± 1.607 11.63 ± 1.903 10.55 ± 1.558
Type IV 9.584 ± 0.9308 10.55 ± 1.128 11.34 ± 1.423 12.31 ± 1.511 10.96 ± 1.875