When is arthritis likely to occur in adults with Crohn disease?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Answer

In adults, the arthritis occurs when the disease is active and can affect large and small joints. Type 1 peripheral arthritis is pauciarticular (< 5 joints), and is strongly associated with IBD activity and other EIMs. The joint most commonly involved is the knee. Type 2 peripheral arthritis is polyarticular and independent of disease activity. The metacarpophalangeal (MCP) joint is the most commonly involved site; less frequently, the knees, ankles, shoulders, proximal interphalangeal (PIP) joint, and metatarsophalangeal (MTP) joint may be involved.


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