Table 2 Correlation between the results of MRI in left and right sides
Type | Parameter | Left (n = 880) | Right (n = 880) | χ2, P |
|---|---|---|---|---|
Disk shape | Biconcave | 284 (32.3%) | 294 (33.4%) | 2.461, 0.482 |
Contracture | 277 (31.5%) | 251 (28.5%) | ||
Lengthened | 119 (13.5%) | 135 (15.3%) | ||
Irregular | 200 (22.7%) | 200 (22.7%) | ||
Disk position | NA | 236 (26.8%) | 230 (26.1%) | 1.330, 0.722 |
s-ADD | 70 (8.0%) | 83 (9.4%) | ||
m-ADD | 548 (62.3%) | 1087 (61.8%) | ||
PDD | 26 (3.0%) | 54 (3.1%) | ||
Joint effusion | NA | 740 (84.1%) | 726 (82.5%) | 5.687, 0.060 |
Slight | 133 (15.1%) | 135 (15.3%) | ||
Massive | 7 (0.8%) | 26 (1.5%) | ||
Condyle | Normal | 449 (51.0%) | 458 (52.0%) | 0.184, 0.703 |
Abnormal | 431 (49.0%) | 422 (48.0%) |