Table 3.
Correlation between ventral and dorsal synovial fold volume (mm3) at the right and left lateral atlanto-axial joints with cervical range of motion (degrees)
| Spearman’s rsP value | Right ventral synovial fold | Right dorsal synovial fold | Left ventral synovial fold | Left dorsal synovial fold |
|---|---|---|---|---|
| Flexion (°) | 0.13 P = 0.74 |
0.39 P = 0.27 |
0.56 P = 0.09 |
0.41 P = 0.24 |
| Extension (°) | 0.25 P = 0.49 |
0.59 P = 0.07 |
0.38 P = 0.28 |
0.79 P = 0.01 |
| Right lateral flexion (°) | 0.13 P = 0.74 |
0.13 P = 0.73 |
−0.20 P = 0.58 |
0.32 P = 0.37 |
| Left lateral flexion (°) | 0.06 P = 0.87 |
0.21 P = 0.55 |
−0.03 P = 0.93 |
0.23 P = 0.53 |
| Right rotation (°) | 0.15 P = 0.68 |
0.18 P = 0.63 |
0.35 P = 0.33 |
0.29 P = 0.43 |
| Left rotation (°) | 0.44 P = 0.20 |
0.58 P = 0.08 |
0.69 P = 0.03 |
0.43 P = 0.22 |