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Inflammatory bowel disease (IBD) is commonly associated with arthritic
manifestations. They are divided into three clinical categories; peripheral
arthritis, spondylitis, and sacroiliitis. To evaluate the incidence of arthritis
associated with IBD in Korea, we retrospectively reviewed one hundred and
twenty-nine patients with IBD, 77 with ulcerative colitis (UC) and 52 with
Crohn's disease (CD). Arthritis occurred in twenty-two patients (17.1%); 15 with
UC(19.6%), 7 with CD (13.5%). Patients with arthritis had more active
inflammations and all were seronegative except one patient. Peripheral arthritis
was found in twenty patients (15.5%) and more common in UC (19.6%) than in CD
(9.6%). Joint involvements tended to be monoarticular or pauciarticular, and
most frequently developed in the knee and ankle. Spondylitis was diagnosed in
one patient (1.6%) who showed HLA B27 positivity. Radiographic sacroiliitis was
observed in eight patients (6.2%) who revealed HLA B27 negativity. Both
peripheral arthritis and sacroiliitis were found in six patients (4.6%). In CD,
arthritis occurred in 20% of the patients with colonic involvement but in none
of the patients without colonic involvement. In conclusion, arthritis was
frequent in patients with IBD. Peripheral arthritis was more common in patients
with UC than CD. All the patients with CD and arthritis had colonic involvement.