Table 4 Radiologic evaluation
SA-OLIF (21 levels) | OLIF + LP (26 levels) | p value | |
|---|---|---|---|
Fusion levels, n | |||
L3/4 | 3 | 7 | 0.475 |
L4/5 | 18 | 19 | |
Cage size | |||
Cage lordosis | 6.6 ± 0.9 | 8.9 ± 3.0 | 0.001 |
Cage height | 13.6 ± 1.0 | 13.6 ± 1.6 | 0.815 |
Cage length | 53.3 ± 2.4 | 54.0 ± 3.7 | 0.328 |
Cage width | 19.2 ± 1.9 | 20.5 ± 1.5 | 0.010 |
Disc height | |||
Preop | 9.4 ± 2.1 | 9.4 ± 2.4 | 0.992 |
Postop | 12.8 ± 2.2* | 12.6 ± 2.3* | 0.775 |
Last follow-up | 10.4 ± 2.8 | 11.0 ± 3.4* | 0.537 |
Segmental lordosis | |||
Preop | 7.3 ± 2.9 | 6.7 ± 3.6 | 0.563 |
Postop | 9.4 ± 2.3* | 9.5 ± 3.4* | 0.900 |
Last follow-up | 8.8 ± 3.4 | 8.6 ± 3.8 | 0.951 |
Cage subsidence, n (%) | |||
Grade 0 (0–24%) | 17 (81.0) | 21 (80.8) | 0.984 |
Grade I (25–49%) | 3 (14.3) | 4 (15.4) | |
Grade II (50–74%) | 1 (4.8) | 1 (3.8) | |
Grade III (75–100%) | 0 (0) | 0 (0) |