Table 3.
Comparison of complications
| Variables | S group | L group | p value |
|---|---|---|---|
| Perioperative complications (%) | 16.1 | 15.2 | 1 |
| Neurological deterioration (%) | 0 | 0 | |
| Dural tear (%) | 1.1 | 2.2 | 1 |
| Hematoma (%) | 0 | 2.2 | 0.35 |
| Delirium (%) | 8.0 | 0 | 0.095 |
| Pneumonia (%) | 1.1 | 0 | 1 |
| Cardiac disease (%) | 0 | 2.2 | 0.35 |
| SSI (%) | 2.3 | 4.3 | 0.61 |
| Gastrointestinal disease (%) | 1.1 | 4.3 | 0.28 |
| Venous thrombosis (%) | 1.1 | 0 | 1 |
| Electrolyte abnormality (%) | 1.1 | 0 | 1 |
| Fracture of UIV or LIV (%) | 20.7 | 15.2 | 0.49 |
| VF adjacent to UIV or LIV (%) | 16.3 | 19.6 | 0.64 |
| Screw cut out (%) | 6.9 | 10.9 | 0.51 |
| Reoperation (%) | 11.5 | 10.9 | 1 |
| Implant removal due to screw cut out (%) | 1.1 | 4.3 | |
| Extension of PSF (%) | 6.9 | 4.3 | |
| Anterior reconstruction and extension of PSF (%) | 3.4 | 2.2 |
Abbreviations: SSI surgical site infection, UIV uppermost instrumented vertebra, LIV lowermost instrumented vertebra, VF vertebral fracture, PSF posterior spinal fusion