Table 4.
The radiographic outcomes in the MI-PLIF and open PLIF groups
| PE-PLIF | Open PLIF | P | ||
|---|---|---|---|---|
| LLA (°) | Preoperation | 33.30 ± 11.45 | 36.73 ± 6.29 | 0.156 |
| Postoperation | 37.93 ± 7.13* | 39.90 ± 5.11* | 0.225 | |
| SLA (°) | Preoperation | 14.17 ± 5.60 | 15.70 ± 3.83 | 0.228 |
| Postoperation | 17.10 ± 4.55* | 17.90 ± 3.33* | 0.445 | |
| DH (mm) | Preoperation | 9.21 ± 2.15 | 9.07 ± 1.72 | 0.771 |
| Postoperation | 11.73 ± 1.27* | 11.76 ± 1.33* | 0.149 | |
| Last follow-up | 10.75 ± 1.18* | 10.82 ± 0.98* | 0.813 | |
| CSAC | Preoperation | 0.92 ± 0.23 | 0.95 ± 0.23 | 0.638 |
| Last follow-up | 1.70 ± 0.28* | 1.66 ± 0.26* | 0.556 | |
| Fusion rate (%) | 93.3 | 96.7 | 1.000** | |
| Definite fusion | 28 | 29 | ||
| Probable fusion | 2 | 1 | ||
| Nonunion | 0 | 0 | ||
| Cage subsidence | 2 | 5 | 0.228** |
*, P < 0.05 compared to the preoperative data. **, results from fisher’s exact test. LLA Lumbar lordotic angle. SLA Segmental lordotic angle. DH, Disc height. CSAC Cross-sectional area of the spinal canal