Table 2 Comparison of imaging data between the two groups
Group | n | Opening angle (°) | Opening width (mm) | Spinal cord drift distance (mm) | Hinge fracture | CCI (%) | ||
|---|---|---|---|---|---|---|---|---|
Yes | No | Preop | Final follow-up | |||||
Later mass group | 55 | 39.6 ± 5.1 | 21.7 ± 2.3 | 2.7 ± 0.5 | 5 (9.1%) | 50(90.9%) | 19.6 ± 4.5 | 18.7 ± 4.1 |
Lamina group | 43 | 42.3 ± 5.7 | 17.3 ± 2.1 | 2.2 ± 0.4 | 11(25.6%) | 32(74.4%) | 19.2 ± 4.7 | 18.5 ± 3.9 |
t value | 2.469 | 9.759 | 5.352 | 4.804 | 0.428 | 0.245 | ||
P value | 0.015 | < 0.001 | < 0.001 | 0.028 | 0.669 | 0.807 | ||