Comparison of pre- to postoperative changes in lower limb alignment, as well as rates of residual postoperative lower extremity compensation, between PNR and PR.
| Radiographic Parameter | Patient Group | P Value | |
| PNR (N = 29) | PR (N = 29) | ||
| Pre- to postoperative change in lower limb alignment | |||
| Sacrofemoral angle (°) | 2.1 ± 5.8 | −5.3 ± 7.0 | <0.001 |
| Pelvic shift (mm) | −24.1 ± 37.3 | −63.7 ± 42.5 | 0.001 |
| Pelvic femoral angle (°) | −1.4 ± 2.2 | −3.8 ± 3.0 | 0.002 |
| Global sagittal angle (°) | −3.5 ± 4.8 | −8.8 ± 4.4 | <0.001 |
| Rates of persistent postoperative lower extremity compensation | |||
| Sacrofemoral angle | 68% | 25% | 0.003 |
| Ankle flexion | 64% | 33% | 0.032 |
| Pelvic shift | 28% | 4% | 0.049 |
Note: Data presented as mean ± SD or %. Bolded values indicate statistical significance at P < 0.05.
PNR, pelvic nonresponders; PR, pelvic responders.