The reported prevalence figures on shoulder complaints diverged strongly. Health professionals and policymakers who estimate the amount of medical care needed and related costs should be aware of the variations in prevalence rate and the underlying reasons for these differences.

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Spondyloarthritis occurs in up to 13% of patients with IBD. Ankylosing spondylitis is the least common [3%] followed by sacroiliitis [10%] and peripheral arthritis [13%].

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