Table 3.
Subgroup analysis of the L5–S1 Level
| Variable | Degree of correction | p-value |
|---|---|---|
| Segmental lordosis (°) | ||
| TLIF | -2.28 | 0.299 |
| MIS TLIF | 3.73 | 0.095 |
| OLIF | 2.44 | 0.328 |
| All | 0.72 | 0.644 |
| Disk height (mm) | ||
| TLIF | 0.4 | 0.538 |
| MIS TLIF | 1.34 | 0.029 |
| OLIF | 2.7 | <0.001 |
| All | 1.33 | 0.024 |
| Lumbar lordosis (°) | ||
| TLIF | -7.9 | 0.247 |
| MIS TLIF | -6.5 | 0.066 |
| OLIF | 15.6 | 0.481 |
| All | -4.1 | 0.229 |
| Pelvic tilt (°) | ||
| TLIF | 6.6 | 0.027 |
| MIS TLIF | 6 | 0.012 |
| OLIF | -2 | 0.5 |
| All | 5.38 | 0.001 |
| Pelvic incidence (°) | ||
| TLIF | -0.41 | 0.935 |
| MIS TLIF | 2.74 | 0.566 |
| OLIF | 11.4 | 0.105 |
| All | 2.7 | 0.509 |
TLIF, transforaminal lumbar interbody fusion; MIS TLIF, minimally invasive transforaminal lumbar interbody fusion; OLIF, oblique lumbar interbody fusion.