Table 2.
Comparison of the radiological data and postoperative complications between the three fracture types
| Superior-type (n = 16) | Inferior-type (n = 11) | Complete-type (n = 11) | P-value | ||
|---|---|---|---|---|---|
| Segmental instability | 12 | 7 | 3 | ||
| Stenosis types | CS | 13 | 3 | 8 | |
| FS | 1 | 5 | 2 | ||
| CS + FS | 2 | 3 | 1 | ||
| VCFs | Fresh | 2 | 1 | 5 | 0.11 |
| Old | 3 | 4 | 2 | 0.62 | |
| LL (°) | Pre-op | 26.7 ± 14.7 | 28.0 ± 9.8 | 16.4 ± 16.9 | 0.12 |
| Post-op | 35.9 ± 9.7 | 35.6 ± 10.1 | 25.0 ± 14.3 | 0.04 | |
| Follow-up | 31.0 ± 11.2 | 30.2 ± 13.0 | 16.1 ± 18.5 | 0.02 | |
| Loss of correction | 4.9 ± 7.4 | 5.4 ± 11.7 | 9.0 ± 13.8 | 0.61 | |
| SL (°) | Pre-op | 7.3 ± 13.2 | 4.8 ± 9.3 | 6.2 ± 15.2 | 0.89 |
| Post-op | 15.8 ± 9.3 | 13.8 ± 6.6 | 15.9 ± 13.5 | 0.85 | |
| Follow-up | 12.5 ± 11.3 | 12.0 ± 8.9 | 8.4 ± 17.1 | 0.68 | |
| Loss of correction | 3.2 ± 4.6 | 1.7 ± 4.6 | 7.5 ± 7.2 | 0.045 | |
| Fusion status | Union in situ | 14 | 8 | 5 | |
| Collapsed union | 2 | 2 | 6 | 0.058 | |
| Nonunion | 0 | 1 | 0 | ||
| Complications | PVC | 6 | 3 | 2 | 0.66 |
| PS loosening | 5 | 1 | 8 | 0.009 | |
| PS back-out | 0 | 1 | 3 | 0.06 | |
Values are expressed as mean ± SD. CS: canal stenosis, FS: foraminal stenosis, LL: lumbar lordosis, PS: pedicle screw, PVC: postoperative vertebral collapse, SL: segmental lordosis at the fused level, VCF: vertebral compression fracture.