Table 1 Distribution of IDH in each vertebral segment (through L1–L2 to L5–S1) for the four Roussouly subtypes

8.276 ± 0.8697

9.063 ± 0.8253

9.814 ± 0.9908

10.56 ± 1.164

9.696 ± 1.138

8.094 ± 1.123

8.904 ± 1.139

9.688 ± 1.215

10.42 ± 1.446

9.556 ± 1.313

8.864 ± 1.257

9.848 ± 1.361

10.80 ± 1.607

11.63 ± 1.903

10.55 ± 1.558

9.584 ± 0.9308

10.55 ± 1.128

11.34 ± 1.423

12.31 ± 1.511

10.96 ± 1.875