How often does Axial Spondyloarthritis occur in patients with IBD?
Prevalence of Arthritis in IBD
Arthritis Pattern | Crohn’s Disease (%) | Ulcerative Colitis (%) | All IBD (%) |
---|---|---|---|
Peripheral | 15 | 12 | 13 |
Sacroiliitis a | 13 | 7 | 10 |
Spondylitis b | 4 | 2 | 3 |
a Many of these patients have asymptomatic radiographic sacroiliitis and is not associated with HLA-B27 positivity.
b About 80% of these individuals are HLA-B27-positive.