Table 4.
Mean cartilage T2 relaxation time values (ms) for subjects with trochlear dysplasia.
| T2 | Trochlear depth | Facetal ratio | Sulcus angle | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Compartment | Shallow n=85 | Normal n=50 | P | Difference (lower 95% CI; upper 95% CI) | Abnormal n=30 | Normal n=105 | P | Difference (lower 95% CI; upper 95% CI) | Abnormal n=22 | Normal n=113 | P | Difference (lower 95% CI; upper 95% CI) |
| Global | 44.4 ×0.3 | 44.9 ×0.4 | 0.442 | 0.5 (−0.6; 1.4) | 44.7 ×0.6 | 44.6 ×0.3 | 0.903 | 0.1 (−1.1; 1.4) | 44.5 ×0.7 | 44.6 ×0.3 | 0.541 | 0.4 (−1.0; 1.8) |
| Patella | 40.9 ×0.5 | 42.6 ×0.6 | 0.037* | 1.7 (0.2; 3.1) | 40.8 ×0.9 | 41.8 ×0.4 | 0.306 | 1.1 (−0.8; 2.9) | 41.5×1.0 | 41.7 ×0.5 | 0.464 | 0.8 (−1.3; 2.8) |
| Trochlea | 45.7 ×0.5 | 45.7 ×0.6 | 0.973 | 0.1 (−1.3; 1.5) | 45.9 ×0.4 | 44.9 ×0.8 | 0.251 | 1.0 (−0.7; 2.7) | 46.2 ×1.0 | 45.6 ×0.5 | 0.873 | 0.2 (−1.8; 2.1) |
| Medial femorotibial | 45.7 ×0.6 | 46.0 ×0.6 | 0.667 | 0.2 (−0.9; 1.4) | 46.2 ×0.8 | 45.8 ×0.5 | 0.430 | 0.4 (−0.9; 1.8) | 45.6 ×0.8 | 45.9 ×0.4 | 0.489 | 0.6 (−1.0; 2.2) |
| Lateral femorotibial | 44.4 ×0.6 | 44.4 ×0.7 | 0.901 | 0.0 (−1.2; 1.3) | 44.8 ×0.8 | 44.3 ×0.6 | 0.280 | 0.7 (−0.8; 2.1) | 44.1 ×0.8 | 44.4 ×0.4 | 0.604 | 0.5 (−1.3; 2.2) |
Subjects with an abnormal trochlear depth (shallow), medial-to-lateral trochlea facetal ratio or sulcus angle were compared to those subject with normal values.
*
P<0.05