| Mean angle of limitation of lateral bending | Mean angle of limitation of rotation | Mean angle of head tilt (ACM angle) | ||||||
Preop. | Postop. | Differences | Preop. | Postop. | Differences | Preop. | Postop. | Differences | |
Variant 1 | 14.6 | 0.7 | 13.9 | 7.2 | 2.6 | 4.6 | 14.2 | 1.9 | 12.3 |
Variant 2 | 21.2 | 7.8 | 13.4 | 7.4 | 3.5 | 3.9 | 24.9 | 8.4 | 16.5 |
P value |
|
| 0.042455 |
|
| 0.0858130 |
|
| 0.175734 |