Fig. 2From: Evaluation of active inflammation, chronic structural damage, and response to treatment of sacroiliitis in axial spondyloarthritis using the Spondyloarthritis research consortium of Canada scoring systemMRI findings of active inflammation and chronic structural damage in axSpA. AÂ Bone marrow edema on the left side of sacroiliac joints. BÂ Erosion of the left iliac bone and sacral bone. CÂ Fat metaplasia in the bilateral sacroiliac joints. DÂ Backfill in the right sacroiliac joints. MRI: magnetic resonance imaging; axSpA: axial spondyloarthritisBack to article page