The median status scores and change scores for the OMERACT hand OA MRI score.
| Median (IQR) at Baseline* | Median (IQR) at Followup* | Median (IQR) Change* | |
|---|---|---|---|
| Joint level (0–3 scale) | |||
| Synovitis | 0.7 (0.3, 1.0) | 1.0 (0.7, 1.3) | 0.3 (0.0, 0.7) |
| Erosive damage | 0.7 (0.0, 1.3) | 1.0 (0.3, 2.0) | 0.2 (0.0, 0.7) |
| Cysts | 0.3 (0.0, 0.7) | 0.7 (0.3, 1.3) | 0.3 (0.0, 0.7) |
| Osteophytes | 1.0 (0.7, 1.7) | 1.3 (0.7, 2.0) | 0.1 (0.0, 0.3) |
| Cartilage space loss | 1.0 (0.3, 2.0) | 1.3 (0.7, 2.3) | 0.3 (0.0, 0.6) |
| Malalignment | 0.3 (0.0, 0.7) | 0.2 (0.0, 0.9) | 0.0 (0.0, 0.3) |
| Bone marrow lesions | 0.3 (0.0, 0.7) | 0.3 (0.0, 1.0) | 0.0 (0.0, 0.3) |
| Patient level (sum scores for 8 DIP and PIP joints, 0–24 scales) | |||
| Synovitis | 5.3 (4.1, 7.1) | 7.0 (6.0, 10.0) | 2.3 (1.1, 3.3) |
| Erosive damage | 6.5 (2.1, 9.9) | 9.2 (3.7, 14.4) | 2.5 (0.8, 4.8) |
| Cysts | 4.2 (2.2, 6.7) | 6.3 (3.2, 9.0) | 2.0 (0.0, 4.6) |
| Osteophytes | 11.0 (4.8, 13.7) | 13.0 (7.6, 16.7) | 3.0 (1.0, 3.8) |
| Cartilage space loss | 10.0 (3.8, 13.9) | 11.3 (5.3, 17.5) | 2.0 (1.3, 3.7) |
| Malalignment | 2.8 (1.1, 4.7) | 4.2 (2.1, 5.9) | 0.8 (0.4, 1.3) |
| Bone marrow lesions | 3.0 (1.2, 4.7) | 4.5 (2.0, 6.3) | 0.6 (−0.3, 2.0) |
↵* Median and interquartile range (IQR) for each of the MRI features are based on average score for the 3 readers. OA: osteoarthritis; MRI: magnetic resonance imaging; DIP: distal interphalangeal; PIP: proximal interphalangeal.