Radiographic information for the full sample.
| Characteristics | Preoperative | Postoperative | Pre- to Postoperative Change | Significance (P < 0.05) |
| Lumbar lordosis, degrees, mean (SD; range) | 50.9 (12.4; 21–77) | 54.2 (13.5; 17–85) | 3.3 (8.2; –25–32) | <0.001 |
| Pelvic incidence, degrees, mean (SD; range) | 57.5 (13.0; 33–88) | 58.4 (12.5; 37–88) | 0.9 (3.3; –10–11) | 0.002 |
| Spinopelvic alignment (PI–LL mismatch), degrees, mean (SD; range) | 6.6 (11.5; –18–32) | 4.2 (12.0; –29–42) | –2.5 (8.6; –30–29) | 0.001 |
| Patients with spinopelvic malalignment (PI–LL mismatch ≥ 10°), n (%) | 52 (38.5) | 36 (26.7) | 0.006 |
Abbreviations: LL, lumbar lordosis; PI, pelvic incidence.