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Screw fixation
| Mean value | Median | Range values | SD | |
|---|---|---|---|---|
| Superior screw angle (°) | 14.1 | 12.5 | 0–42.4 | 9.0 |
| Inferior screw angle (°) | 14.2 | 12.6 | 0–40 | 9.1 |
| Superior screw-equator angle (°) | 17.6 | 16.7 | 0–41 | 7.8 |
| Inferior screw-equator angle (°) | 17.5 | 16.7 | 0–41 | 8.0 |
| Superior screw protrusion (mm) | 6.2 | 6 | 0-17.5 | 4.6 |
| Inferior screw protrusion (mm) | 4.7 | 5 | 0–14 | 3.7 |
In brackets % values
SD standard deviation
