Table 1.
Patients description.
| OA | CPPA | RA | P value | |
|---|---|---|---|---|
| n | 9 | 7 | 8 | |
| Age [median (interval)] | 55 (36–89) | 65 (50–74) | 57 (29–78) | 0.3 |
| % of woman | 88% (8/9) | 71% (5/7) | 62% (5/8) | 0.44 |
| BMI [median (interval)] | 32.2 (17.6–41.9) | 24.2 (22–33) | 24.4 (16.4–33.9) | 0.4 |
| K&L score [median (interval)] | 3 (0–4) | 2 (0–4) | – | 0.6 |
| Histological inflammatory score | 4 (3–8) | 5 (5–13) | 14 (12–17) | 0.0003 |
| Anti-CCP (positive %) | 0% | 0% | 60% | 0.002 |
| Rheumatoid factor (positive %) | 0% | 0% | 40% | 0.032 |
| CRP (positive %) | 20% | 40% | 90% | 0.020 |
| ESR (positive %) | 10% | 0% | 60% | 0.01 |
Clinical and pathological characteristics of patients with osteoarthritis (OA), chronic pyrophosphate arthropathy (CPPA) or rheumatoid arthritis (RA).
OA osteoarthritis, CPPA chronic pyrophosphate arthropathy, RA rheumatoid arthritis, BMI body mass index, K&L Kellgren and Lauwrence score, anti-CCP anti-cyclic citrullinated peptide, CRP C reactive protein, ESR erythrocyte sedimentation rate