Overview of MRI, US, and radiographic features in DIP and PIP joints (total 128 joints, but 1 missing) of the right hand of 16 patients with HOA. Values are n (%).
| Feature | MRI | US | Radiographs |
|---|---|---|---|
| Synovial thickening | 117 (98) | 49 (38) | NA |
| Synovial thickening* | 51 (43) | 48 (38) | NA |
| Osteophytes | 98 (77) | 127 (99) | 53 (41) |
| JSN | 116 (91) | NA | 97 (76) |
| Erosions | 76 (61) | NA | 23 (18) |
| Cysts | 16 (12) | NA | 25 (20) |
↵* Synovial thickening in MRI defined as ≥ grade 2. MRI: magnetic resonance imaging; US: ultrasound; DIP: distal interphalangeal; PIP: proximal interphalangeal; HOA: hand osteoarthritis; JSN: joint space narrowing; NA: not applicable.