Postoperative increase in lordotic angle on a per level basis.
| Level | # of Operated Levels | Pre-Operative Lordotic Angle (de-grees) (mean +/-SD) | Post-Operative Lordotic Angle (degrees) (mean +/-SD) | Average Increase Per Level (degrees) |
|---|---|---|---|---|
| C3-4 | 10 | 3.6 ± 3.0 | 8.2 ± 2.5 | 4.6 |
| C4-5 | 13 | 1.7 ± 1.9 | 6.0 ± 2.0 | 4.3 |
| C5-6 | 22 | 0.9 ± 0.8 | 5.8 ± 1.4 | 4.9 |
| C6-7 | 26 | 1.0 ± 1.0 | 5.2 ± 1.4 | 4.2 |
| C7-T1 | 2 | 0.3 ± 0.4 | 4.8 ± 1.6 | 4.5 |
| All Levels | 73 | 1.5 ± 1.8 | 6.0 ± 1.9 | 4.5 |