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Radiologic outcome and complication
| Group 1 screws (n=136) | Group 2 screws (n=216) | Group 3 screws (n=104) | Group 4 screws (n=224) | p-value | Total (n=680) | |
|---|---|---|---|---|---|---|
| Pedicle breach | ||||||
| Grade 0 | 135 | 214 | 103 | 223 | 0.757 | 675 |
| Grade 1 | 1 | 2 | 1 | 1 | 0.901 | 5 |
| Grade 2 | 0 | 0 | 0 | 0 | - | 0 |
| Deviation of breach | ||||||
| Medial | ||||||
| Grade 0 | 2 | 1 | 1 | 2 | 0.834 | 5 |
| Grade 1 | 0 | 0 | 0 | 0 | - | 0 |
| Lateral | ||||||
| Grade 0 | 2 | 3 | 2 | 1 | 0.703 | 8 |
| Grade 1 | 1 | 2 | 1 | 1 | 0.901 | 5 |
| Complication | 0 | 0 | 0 | 0 | - | 0 |
