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Results of independent review of 3D scans for assessment of position of 602 pedicle screws
| Grade | No. of screws (%) | Intraoperative action performed |
|---|---|---|
| Optimal (no breach) | 559 (92.9) | None revised |
| Acceptable (breach ≤2 mm) | 32 (5.3) | 6 of 32 (19%) revised to optimal position |
| Unacceptable (breach >2 mm) | 11 (1.8) | All revised to optimal/acceptable position |
| Total | 602 (100) |
