Perioperative data, postoperative complications, fusion rate, and PEEK subsidence rate.
| Characteristics | LLIF (n = 30) | PLIF (n = 50) | P |
| Estimate blood loss, mL, median (IQR) | 200 (100, 250) | 350 (200, 500) | <0.001a |
| Operative time, min, median (IQR) | 215 (170, 291) | 180 (150, 211) | 0.007a |
| Length of hospital stay, d, median (IQR) | 6 (5, 9) | 7 (6, 8) | 0.437 |
| Postoperative complications, n (%) | 7 (23) | 14 (28) | 0.794 |
| Hematoma | 1 | 2 | |
| Electrolyte imbalance | 3 | 2 | |
| Anemia | 3 | 4 | |
| Dural tear | 0 | 6 | |
| Proximal limb neuropathy, n (%) | 8 (27) | 0 (0) | <0.001a |
| Fusion rate, n (%) | 25 (83.3) | 42 (84) | 0.937 |
| PEEK subsidence rate, n (%) | 14 (46.7) | 10 (20) | 0.022a |
Abbreviations: IQR, interquartile range; LLIF, lateral lumbar interbody fusion; PEEK, polyetheretherketone; PLIF, posterior lumbar interbody fusion.
↵a Significant at a P value of less than 0.05. Statistical analysis using the Mann-Whitney U test and Fisher’s exact test.