Table 5.
Comparison in the Change in Global LL and SL by Diagnosis (Spondylosis Alone vs Spondylosis With Spondylolisthesis) and TLIF Levels (Single- vs 2-Level).
| Parameter | Open TLIF | MIS TLIF | Significance |
|---|---|---|---|
| Spondylosis | n = 16 | n = 16 | |
| Change in LL | 2.0 ± 6.3 | 1.9 ± 5.3 | P = .98 |
| Change in SL | 1.0 ± 6.1 | 2.8 ± 3.7 | P = .32 |
| Spondylolisthesis | n = 22 | n = 22 | |
| Change in LL | 4.4 ± 5.9 | 6.1 ± 5.7 | P = .32 |
| Change in SL | 4.5 ± 6.1 | 4.7 ± 4.0 | P = .89 |
| Single level | n = 25 | n = 25 | |
| Change in LL | 3.1 ± 6.0 | 3.7 ± 6.0 | P = .73 |
| Change in SL | 2.2 ± 6.5 | 3.2 ± 3.5 | P = .50 |
| Two level | n = 13 | n = 13 | |
| Change in LL | 3.9 ± 6.4 | 5.7 ± 5.5 | P = .46 |
| Change in SL | 4.5 ± 5.7 | 5.2 ± 4.6 | P = .74 |
Abbreviations: LL, lumbar lordosis; MIS, minimally invasive surgery; SL, segmental lordosis; TLIF, transforaminal lumbar interbody fusion.