Date: Monday, November 9, 2015
Session Type: ACR Poster Session B
Session Time: 9:00AM-11:00AM
To evaluate the clinical courses and associated factors of hip arthritis in patients with ankylosing spondylitis (AS).
In this retrospective analysis, we evaluated 488 AS patients at a single tertiary hospital. Among the patients with hip arthritis in AS, radiographic hip arthritis was assessed using the Bath Ankylosing Spondylitis Radiology Hip Index (BASRI-h), and the average of the hip joint space width (interbone distance) at three distinct sites between the acetabulum and femoral head was recorded at baseline and the last visit at the outpatient clinic.
Among 488 patients with AS, 60 (12.3%) patients had hip arthritis. Body mass index (BMI) and erythrocyte sedimentation rate (ESR) were associated with hip involvement (OR 1.11, 95% CI 1.03 to 1.20, p = 0.005 and OR 1.01, 95% CI 1.00 to 1.02, p = 0.004, respectively). Long disease duration and advanced axial disease were associated with severe hip involvement (3≥BASRI-h) at baseline. BASRI-h and interbone distance did not change significantly in patients with hip involvement during the follow-up period of 81.4 ± 35.7 months. Five patients had hip joint replacement surgery during follow-up period. The BMI and initial BASRI-h were associated with joint replacement surgery (OR 1.29, 95% CI 1.01 to 1.65, p = 0.044 and OR 4.90, 95% CI 1.05 to 22.78, p = 0.043, respectively).
Most of the patients with hip arthritis in AS showed no significant radiographic progression during the follow-up period. BMI was associated with hip arthritis in patients with AS.
To cite this abstract in AMA style:Jeong H, Hwang J, Eun YH, Park EJ, Oh JM, Kim H, Ahn JK, Lee J, Jeon CH, Koh EM, Cha HS. Body Mass Index Is Associated with Hip Arthritis in Patients with Ankylosing Spondylitis [abstract]. Arthritis Rheumatol. 2015; 67 (suppl 10). https://acrabstracts.org/abstract/body-mass-index-is-associated-with-hip-arthritis-in-patients-with-ankylosing-spondylitis/. Accessed December 13, 2019.
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