Table 3 Relationship between radiographic parameters and pelvic incidence
From: Patterns of coronal and sagittal deformities in adolescent idiopathic scoliosis
|  | PI < 35 mean ± SD (range) n = 135 | PI 35–50 mean ± SD (range) n = 522 | PI > 50 mean ± SD (range) n = 397 | p-value^ | Post-hoc pairwise comparisonwith significance adjusted byBonferroni correction |
|---|---|---|---|---|---|
| Â | Group1 Low PI | Group 2 Average PI | Group 3 High PI | Â | Â |
PI | 29.8 ± 5.2 (3.6–34.9) | 43.2 ± 4.2 (35.0–50.0) | 59.2 ± 8.2 (50.1–97.2) | < 0.001* | Group 1 vs 2: < 0.001* Group 1 vs 3: < 0.001* Group 2 vs 3: < 0.001* |
PT | −0.3 ± 8.1 (− 30.8–21.3) | 7.2 ± 6.5 (− 10.8–26.2) | 14.4 ± 7.5 (− 4.2–44.4) | < 0.001* | Group 1 vs 2: < 0.001* Group 1 vs 3: < 0.001* Group 2 vs 3: < 0.001* |
SS | 30.1 ± 8.3 (9.4–50.9) | 36.1 ± 7.0 (14.6–57.0) | 44.8 ± 7.7 (23.3–69.3) | < 0.001* | Group 1 vs 2: < 0.001* Group 1 vs 3: < 0.001* Group 2 vs 3: < 0.001* |
PI-LL | − 12.1 ± 13.1 (− 53.0–16.3) | −3.9 ± 10.9 (− 53.2–29.2) | 4.1 ± 10.5 (− 23.1–36.3) | < 0.001* | Group 1 vs 2: < 0.001* Group 1 vs 3: < 0.001* Group 2 vs 3: < 0.001* |
LL | 42.0 ± 13.2 (9.1–75.1) | 47.1 ± 10.9 (14.2–90.0) | 55.1 ± 10.6 (21.5–87.1) | < 0.001* | Group 1 vs 2: < 0.001* Group 1 vs 3: < 0.001* Group 2 vs 3: < 0.001* |
TK | 18.5 ± 10.3 (− 4.1–51.3) | 18.2 ± 10.7 (− 24.7–69.3) | 18.1 ± 10.3 (− 3.8–71.1) | 0.905 |  |
Major curve | 27.0 ± 10.4 (10.2–67.6) | 26.6 ± 10.5 (10.3–85.8) | 27.5 ± 10.4 (10.1–69.8) | 0.431 |  |