Alignment values measured preoperatively vs 1 y postoperatively for spinopelvic and cervical alignment parameters within the entire cervical deformity cohort.
| Radiographic Measure | Preoperative | 1 y | P |
| Pelvic tilt (°) | 16 | 16.8 | 0.323 |
| Pelvic incidence and lumbar lordosis (°) | −3.1 | −1.1 | 0.034 |
| T4-T12 (°) | −43.1 | −42 | 0.367 |
| T1SS (°) | 29 | 31.5 | 0.062 |
| T1 slope minus cervical lordosis (°) | 25.9 | 23.9 | 0.335 |
| C2-C7 (°) | 3 | 7.7 | 0.024* |
| Cervical sagittal vertical angle (mm) | 26.3 | 27.7 | 0.290 |
| C2-T3 (°) | 0.74 | 3.1 | 0.357 |
| SVA C2-T3 (°) | 51.4 | 55.9 | 0.026* |
| C2SS (°) | 22.7 | 20 | 0.245 |
| SVA (mm) | 2.5 | 8.8 | 0.142 |
Note: Boldface indicates statistical significance.
C2SS, C2 sacral slope; SVA, sagittal vertical axis; T1SS, T1 sacral slope.