Table 2.
Association of MRI-detected inflammation with physical joint examination per type of MRI-detected inflammation (synovitis, tenosynovitis, osteitis) and intermetatarsal bursitis for MTP joints in early arthritis
| Swollen joints | Non-swollen joints | Univariable | Multivariable1 | Multivariable2 | |
|---|---|---|---|---|---|
| n (%) | n (%) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Any MRI-detected inflammation* | 74 (48) | 281 (17) | 4.42 (2.9–6.8) | ||
| Synovitis | 52 (34) | 200 (12) | 3.62 (2.3–5.8) | 1.68 (0.8–3.5) | 1.30 (0.6–2.6) |
| Tenosynovitis | 49 (32) | 140 (9) | 4.94 (3.0–8.0) | 3.19 (1.6–6.3)** | 2.21 (1.1–4.3)** |
| Osteitis | 31 (20) | 117 (7) | 3.20 (1.9–5.5) | 1.55 (0.8–3.0) | 1.5 (0.8–2.7) |
| Intermetatarsal bursitis | 94 (61) | 423 (26) | 4.48 (2.8–7.1) | 2.91 (1.8–4.8)** |
MRI magnetic resonance imaging, MTP metatarsophalangeal joints, n number, OR odds ratio, CI confidence interval
*Defined by the presence of synovitis, tenosynovitis, and/or osteitis. **Data in italics are statistically significant in multivariable analyses, defined as P<0.05
1Multivariable model including local synovitis, tenosynovitis, and osteitis
2Multivariable model including local synovitis, tenosynovitis, osteitis, and intermetatarsal bursitis