Table 1.
Comparative presentation of radiological changes observed in Group A and Group B preoperatively till the last follow-up.
| Parameters | PREOP | GrA/GrB | Postop | GrA/GrB | 3 months | GrA/GrB | 6 months | GrA/GrB | Last follow-up | GrA/GrB | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GrA | GrB | P value | GrA | GrB | P value | GrA | GrB | P value | GrA | GrB | P value | GrA | GrB | P value | |
| AVBHr | 0.59 ± 0.11 | 0.63 ± 0.14 | 0.48 | 0.79 ± 0.12 | 0.87 ± 0.15 | 0.22 | 0.75 ± 0.12 | 0.86 ± 0.17 | 0.1 | 0.7 ± 0.15 | 0.9 ± 0.20 | 0.089 | 0.71 ± 0.16 | 0.91 ± 0.19 | 0.09 |
| MVBHr | 0.53 ± 0.12 | 0.68 ± 0.16 | 0.054 | 0.66 ± 0.08 | 0.86 ± 0.13 | 0.06 | 0.73 ± 0.15 | 0.8 ± 0.20 | 0.24 | 0.63 ± 0.2 | 0.8 ± 0.12 | 0.21 | 0.6 ± 0.18 | 0.82 ± 0.13 | 0.23 |
| PVBHr | 0.95 ± 0.15 | 0.97 ± 0.18 | 0.77 | 0.97 ± 0.07 | 1 ± 0.09 | 0.069 | 1 ± 0.12 | 1 ± 0.11 | 0.13 | 0.98 ± 0.13 | 1 ± 0.18 | 0.4 | 1 ± 12 | 1.1 ± 0.17 | 0.45 |
| +SKA | 14.7 ± 8.7 | 13.9 ± 8 | 0.81 | 8.6 ± 7 | 9 ± 4 | 0.88 | 13 ± 8 | 10 ± 6 | 0.40 | 10 ± 6 | 12 ± 8 | 0.65 | 12 ± 5 | 14 ± 9.8 | 0.66 |
| SCE (%) | 22 ± 17 | 26 ± 19 | 0.46 | 15 ± 13∗ | 10 ± 15∗ | 0.49 | |||||||||
∗SCE values on CT scan 12 months following surgery. GrA: Group A; GrB: Group B; AVBHr: anterior vertebral body height ratio; MVBHr: middle vertebral body height ratio; PVBHr: posterior vertebral body height ratio; SCE: spinal canal encroachment. +SKA in Cobb degrees.