Operative data of patients undergoing pedicle screw insertion.
| Variable | O-Arm Group | Surgivisio Group | P |
| No. of instrumented vertebrae | 120 | 145 | <0.01 |
| Thoracic vertebrae, n (%) | 17 (14) | 46 (32) | |
| Lumbar vertebrae, n (%) | 103 (86) | 68 (78) | |
| No. of operated vertebrae per patient, mean ± SD (range) | 2.4 ± 1.14 (1–6) | 2.9 ± 1.11 (2–6) | 0.03 |
| Operative time, min, mean ± SD (range) | 145 ± 61 (60–410) | 139 ± 73 (39–374) | 0.68 |
| Operative time per level, min, mean ± SD (range) | 71 ± 45 (25–250) | 53 ± 27 (15–125) | 0.02 |
| Operative time per screw, min, mean ± SD (range) | 39 ± 23 (13–125) | 27 ± 16 (8–94) | <0.01 |
| Percutaneous procedures, n (%) | 5 (10) | 39 (78) | <0.01 |
| Open procedures, n (%) | 45 (90) | 11 (22) | |
| Revisions, n (%) | 23 (46) | 7 (14) | <0.01 |
Note: Boldface indicates statistically significant findings.