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Spondyloarthritis: 3 New Things

Similarities between ankylosing spondylitis and non-radiographic axial SpA, a caveat about positive MRI scans, and the impact of obesity on disease outcomes.

References1. Mease PJ, van der Heijde D, Karki C, et al. Characterization of patients with ankylosing spondylitis and non-radiographic axial spondyloarthritis in the US-based Corrona Registry. Arthritis Care Res. 2018 Feb 6. doi: 10.1002/acr.23534.2. de Winter J, de Hooge M, van de Sande M, et al. Magnetic resonance imaging of the sacroiliac joints indicating sacroiliitis according to the assessment of SpondyloArthritis International Society definition in healthy individuals, runners, and women with postpartum back pain. Arthritis Rheumatol. 2018;70:1042-1048. doi: 10.1002/art.40475.3. Fitzgerald G, Gallagher P, Sullivan C, et al. Obese axial spondyloarthropathy patients have worse disease outcomes [abstract 2508]. Arthritis Rheumatol. 2017;69(suppl 10). https://acrabstracts.org/abstract/obese-axial-spondyloarthropathy-patients-have-worse-disease-outcomes/.