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Average screw length and angle in FV and non-FV groups
| Non-FV group | FV group | P value | |
|---|---|---|---|
| 444 screws | 13 screws | ||
| Screw length (mm) | 16.3 ± 1.6 | 15.7 ± 1.1 | 0.1810 |
| Axial angle (°) | 26.0 ± 6.4 | 24.2 ± 6.4 | 0.3190 |
| Sagittal angle (°) | 29.5 ± 12.3 | 12.3 ± 8.0 | <0.0001 |
