Table 2.
Comparison of OPLL total measurements between the myelopathy group and the without myelopathy group
| Variable | M group (n = 118) | WM group (n = 45) | p-value |
|---|---|---|---|
| Minimal SAC (mm) | 5.3 ± 1.7 | 6.5 ± 1.9 | < 0.001* |
| Maximum diameter of OPLL, mm | 6.0 ± 1.8 | 5.5 ± 1.7 | 0.085 |
| Maximum occupation ratio (%) | 51.3 ± 14.0 | 44.2 ± 13.6 | 0.005* |
| Minimum axial bone space (mm2) | 155.3 ± 34.7 | 183.7 ± 47.6 | < 0.001* |
| Minimal sagittal angle (°) | 131.5 ± 20.7 | 131.4 ± 19.4 | 0.979 |
| (C2–7) Cobb angle (°) | 10.3 ± 8.4 | 16.8 ± 11.5 | < 0.001* |
| Total ROM (°) | 27.0 ± 13.4 | 35.7 ± 14.6 | < 0.001* |
| Local ROM (°) | 5.8 ± 4.1 | 7.3 ± 4.8 | 0.034* |
Values are presented as mean±standard deviation.
OPLL, ossification of the posterior longitudinal ligament; M Group, myelopathy group; WM Group, without myelopathy group; SAC, space available for the spinal cord; ROM, range of motion.
*
p < 0.05, statistically significant differences.