Table 2.
Sagittal balance parameters change (postoperatively minus preoperatively) for each surgical approach
| Variable | Degree of correction | p-value |
|---|---|---|
| Segmental lordosis (°) | ||
| TLIF | 0.1 | 0.8 |
| MIS TLIF | 1.3 | 0.1 |
| OLIF | 4.4 | <0.001 |
| All | 1.8 | 0.003 |
| Disk height (mm) | ||
| TLIF | 0.9 | 0.009 |
| MIS TLIF | 1.7 | <0.001 |
| OLIF | 3.7 | <0.001 |
| All | 2.1 | <0.001 |
| Lumbar lordosis (°) | ||
| TLIF | -5.2 | 0.011 |
| MIS TLIF | 0.9 | 0.654 |
| OLIF | 4.8 | 0.049 |
| ALL | 0.02 | 0.99 |
| Pelvic tilt (°) | ||
| TLIF | 3.1 | 0.03 |
| MIS TLIF | -0.6 | 0.7 |
| OLIF | -2.5 | 0.06 |
| All | 0.02 | 0.9 |
| Pelvic incidence (°) | ||
| TLIF | -0.05 | 0.9 |
| MIS TLIF | 0.5 | 0.7 |
| OLIF | 0.3 | 0.8 |
| All | 0.4 | 0.7 |
TLIF, transforaminal lumbar interbody fusion; MIS TLIF, minimally invasive transforaminal lumbar interbody fusion; OLIF, oblique lumbar interbody fusion.