Table 4.
PROs at Preoperative, 1-Year Postoperative, and 2-Years Postoperative by Alignment Group.
| Neutral alignment | Coronal malalignment | Sagittal malalignment | Combined coronal/sagittal malalignment | P-value | |
|---|---|---|---|---|---|
| Preoperative | N = 77 | N = 26 | N = 26 | N = 28 | |
| ODI, mean ± SD | 31.2 ± 19.6 | 31.2 ± 20.1 | 43.4 ± 18.0 | 48.0 ± 14.1 | .007* |
| Postoperative | N = 108 | N = 18 | N = 24 | N = 7 | |
| ODI 1y, mean ± SD | 16.5 ± 16.9 | 17.2 ± 16.8 | 22.4 ± 20.0 | 23.7 ± 17.4 | .329 |
| ODI 2y, mean ± SD | 15.9 ± 18.5 | 11.8 ± 13.2 | 16.5 ± 18.1 | 21.0 ± 19.6 | .738 |
Abbreviation: ODI, Oswestry Disability Index.
* Denotes statistically significant.