Comparison of postoperative sagittal alignment and lower limb alignment between PNR and PR.
| Radiographic Parameter | Patient Group | P Value | |
| PNR (N = 29) | PR (N = 29) | ||
| Postoperative sagittal alignment | |||
| Pelvic tilt (°) | 30.2 ± 6.7 | 17.4 ± 8.4 | <0.001 |
| Mismatch between pelvic incidence and lumbar lordosis (°) | 17.0 ± 12.0 | 2.9 ± 10.9 | <0.001 |
| Sagittal vertical axis (mm) | 51.6 ± 42.3 | 37.0 ± 45.6 | 0.209 |
| T4 T12 thoracic kyphosis (°) | −46.6 ± 13.1 | −40.7 ± 18.3 | 0.163 |
| T1 spinopelvic inclination (°) | −3.0 ± 5.3 | −1.8 ± 5.6 | 0.427 |
| Postoperative lower limb alignment | |||
| Sacrofemoral angle (°) | 203.14 ± 38.7 | 198.6 ± 7.9 | 0.535 |
| Knee angle (°) | 2.2 ± 29.7 | 12.9 ± 34.6 | 0.227 |
| Ankle angle (°) | 8.5 ± 4.6 | 0.3 ± 36.1 | 0.240 |
| Pelvic shift (mm) | 52.6 ± 30.8 | 31.2 ± 35.6 | 0.021 |
| Global sagittal angle (°) | 9.4 ± 16.2 | 3.8 ± 4.3 | 0.096 |
Note: Data presented as mean ± SD. Bolded values indicate statistical significance at P < 0.05.
PNR, pelvic nonresponders; PR, pelvic responders.