What is Type 1 vs Type 2 IBD arthropathy?

Type 1 (peripheral pauciarticular): 1 year.

What proportion of IBD patients develop arthritis?

10-20% of IBD patients develop peripheral arthropathy; 5-10% develop axial disease (sacroiliitis, AS). HLA-B27 increases axial SpA risk. IBD is one of the most common extra-articular manifestations of axial SpA.

How is axial IBD-SpA treated?

NSAIDs with caution (may worsen IBD). IL-17 inhibitors are contraindicated in IBD. TNFi (infliximab, adalimumab) effective for both gut and axial disease. JAKi effective for both but use with care in IBD.

IBD-Related Arthropathy Classification Tool

Classify IBD-related arthropathy: Type 1 (pauciarticular, correlates with gut activity), Type 2 (polyarticular, independent of gut), and axial disease (sacroiliitis/SpA). Guides rheumatology-gastroenterology co-management.

Use the full interactive calculator below, or

Related Calculators

ASDAS axSpA

Hyper-niche Medical

BASDAI AS