Table 2 Segmental lumbar spine lordosis for the pelvic incidence groups. G1: pelvic incidence < 45°; G2: pelvic incidence between 45° and 55°; G3: pelvic incidence > 55°.
Segment | Difference pelvic incidence groups | Total | ||||||
|---|---|---|---|---|---|---|---|---|
G1 (n = 105) 38.3 ± 4.8 | Ratio | G2 (n = 111) 49.6 ± 2.8 | Ratio | G3 (n = 108) 63.3 ± 7.1 | Ratio | n = 324 50.5 ± 11.4 | Ratio | |
L1–L2 | 0.0 ± 3.6 | 0.1% | 0.9 ± 3.5 | 1.8% | 2.5 ± 3.4 | 4.3% | 1.2 ± 3.6 | 2.3% |
L2–L3 | 3.9 ± 3.5 | 9.3% | 6.2 ± 4.2 | 12.1% | 7.5 ± 3.8 | 13.0% | 5.9 ± 4.1 | 11.7% |
L3–L4 | 7.7 ± 4.0 | 18.2% | 8.9 ± 3.7 | 17.5% | 10.7 ± 4.2 | 18.5% | 9.1 ± 4.2 | 18.1% |
L4–L5 | 10.5 ± 4.7 | 24.8% | 13.1 ± 4.5 | 25.8% | 14.4 ± 5.3 | 25.0% | 12.7 ± 5.1 | 25.2% |
L5–S1 | 20.2 ± 6.6 | 47.7% | 21.8 ± 7.0 | 42.7% | 22.6 ± 9.1 | 39.2% | 21.6 ± 7.7 | 42.7% |
