Table 3. S1 fixation of pedicular screws.
| Technique | Total screws | Monocortical | Bicortical | Tricortical | At risk |
|---|---|---|---|---|---|
| Fluoroscopy | 78 | 38 | 24 | 16 | 4 |
| Navigation | 192 | 44 | 65 | 83 | 0 |
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