Fig. 3From: Differences in topographical location of sacroiliac joint MRI lesions in patients with early axial spondyloarthritis and mechanical back painA, B Prevalence of sclerosis in the six cartilaginous joint portions in axSpA (A) and MBP (B) patients divided in the iliac (left) and sacral (right) sides. C, D Prevalence of erosions in the same locations and patient groups as in A and B. Boxes represent the prevalence in each locationBack to article page