Table 2.
Results of the comparison of MRI characteristics in patients with and without ALVAL
| MRI characteristics investigated | Moderate-severe ALVAL (ALVAL ≥ 5) (N = 32 hips) | NonALVAL (ALVAL < 5) (N = 34 hips) | p value |
|---|---|---|---|
| Presence of synovitis (% yes) | 100% | 75% | 0.002 |
| Synovitis type (% mixed) | 97% | 25% | < 0.001 |
| Median maximal synovial thickness (mm) | 13.6 | 3.2 | < 0.001 |
| Median synovial volume (mm3) | 62,778 | 4540 | < 0.001 |
| Decompression of synovitis (% yes) | 85% | 41% | 0.002 |
| Low-signal intensity deposits (% yes) | 59% | 16% | 0.003 |
| Soft tissue edema (% yes) | 62% | 12% | < 0.001 |
| Pseudocapsular dehiscence (% yes) | 85% | 44% | 0.004 |
| Presence of osteolysis (% yes) | 29.1% | 6.3 % | 0.006 |
| Neurovascular compression (% yes) | 35% | 6% | 0.002 |
| Abductor disruption (% yes) | 62% | 6% | 0.004 |
| Presence of nodes (% yes) | 25% | 8.8% | 0.0276 |