MRI findings among the study patients. Data are mean ± SD or no. (%).
| MRI Sign | Right Knee | Left Knee |
|---|---|---|
| Synovial thickness, mm | 1.45 ± 0.43 | 1.49 ± 0.38 |
| Villous projections | 8 (16.7) | 6 (12.5) |
| Minimal knee effusion | 47 (97.9) | 47 (97.9) |
| Moderate knee effusion | 1 (2.1) | 1 (2.1) |
| Soft tissue edema | 29 (60.4) | 23 (47.9) |
| Bone marrow edema (BME) | 9 (18.8) | 11 (22.9) |
| Perientheseal BME | 1 (2.1) | 2 (4.2) |
| Cartilaginous erosions | 23 (47.9) | 19 (39.6) |
| Bone erosions | 12 (25) | 15 (31.3) |
| Medial collateral ligament | 4 (8.3) | 9 (18.8) |
| Lateral collateral ligament | 5 (10.4) | 8 (16.7) |
| Anterior cruciate ligament | 3 (6.3) | 2 (4.2) |
| Posterior cruciate ligament | 2 (4.2) | 3 (6.25) |
| Biceps femoris insertion | 0 (0) | 1 (2.1) |
| Patellar tendon insertion | 21 (43.8) | 12 (25) |
| Medial patellofemoral ligament | 5 (10.4) | 9 (18.8) |
| Lateral patellofemoral ligament | 3 (6.3) | 3 (6.3) |
| Extracapsular enthesitis | 38 (79.2) | 41 (85.4) |
| Intracapsular enthesitis | 5 (10.4) | 6 (12.5) |
MRI: magnetic resonance imaging.