Computed tomography fusion outcomes at 6- and 12-month follow-up.
| Cohort | Fusion at 6 mo | Fusion at 12 mo | ||||
| sa-ALIF | ALIF-PSF | P | sa-ALIF | ALIF-PSF | P | |
| Mean ± SD | 2.5 ± 0.6 | 2.6 ± 0.6 | 0.76 | 2.1 ± 0.5 | 2.0 ± 0.6 | 0.75 |
| Bridwell grade, n (%) | n = 22 | n = 26 | n = 22 | n = 26 | ||
| I | 1 (4.5) | 0 | 2 (9.1) | 3 (11.5) | ||
| II | 7 (31.8) | 13 (50.0) | 16 (72.7) | 20 (76.9) | ||
| III | 14 (63.6) | 12 (46.2) | 4 (18.2) | 2 (7.7) | ||
| IV | 0 | 1 (3.8) | 0 | 1 (3.8) | ||
| Fused (Bridwell I/II) | 8 (36.4) | 13 (50.0) | 0.34 | 18 (81.8) | 23 (88.5) | 0.52 |
Abbreviations: ALIF, anterior lumbar interbody fusion; PSF, pedicle-screw fixation; sa-ALIF, standalone anterior lumbar interbody fusion.