Table 6 Correlation between disc morphology and joint morphology in different age groups
Age group | Type | Biconcave | Contracture | Llengthened | Iirregular | χ2, P | r, P |
|---|---|---|---|---|---|---|---|
≤ 18Y, (n = 390) | Normal | 87 (82.9%) | 65 (44.8%) | 34 (60.7%) | 13 (15.5%) | 89.387, 0.000 | 0.415, 0.000 |
Abnormal | 18 (17.1%) | 80 (55.2%) | 22 (39.3%) | 71 (84.5%) | |||
19-30Y, (n = 950) | Normal | 258 (80.6%) | 127 (44.6%) | 76 (53.1%) | 38 (18.8%) | 200.669, 0.000 | 0.427, 0.000 |
Abnormal | 62 (19.4%) | 158 (55.4%) | 67 (46.9%) | 164 (81.2%) | |||
> 30Y, (n = 420) | Normal | 124 (81.0%) | 33 (33.7%) | 37 (67.3%) | 15 (13.2%) | 137.888, 0.000 | 0.492, 0.000 |
Abnormal | 29 (19.0%) | 65 (66.3%) | 18 (32.7%) | 99 (86.8%) | |||
Total, (n = 1760) | Normal | 469 (81.1%) | 225 (42.6%) | 147 (57.9%) | 66 (16.5%) | 420.342, 0.000 | 0.440, 0.000 |
Abnormal | 109 (18.9%) | 303 (54.7%) | 107 (42.1%) | 334 (83.5%) |