• Jacob L Jaremko, Lambert Robert G W RGW 0000-0003-0305-3290 From the Department of Radiology and Diagnostic Imaging, University of Alberta; Department of Medicine, Uni, Susanne J Pedersen, Ulrich Weber, Duncan Lindsay, Zeid Al-Ani, Kieran Steer, Marcus Pianta, Stephanie Wichuk, and Walter P Maksymowych.
• From the Department of Radiology and Diagnostic Imaging, University of Alberta; Department of Medicine, University of Alberta, Edmonton, Alberta, Canada; Rigshospitalet-Glostrup, Copenhagen Center for Arthritis Research, Center for Rheumatology and Spine Diseases, Copenhagen; King Christian 10th Hospital for Rheumatic Diseases, Gråsten; Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark; St. Vincent's Hospital, Melbourne, Australia. jjaremko@ualberta.ca.
• J Rheumatol. 2019 Sep 1; 46 (9): 1239-1242.

ObjectiveTo assess reliability, feasibility, and responsiveness of Hip Inflammation Magnetic resonance imaging Scoring System (HIMRISS) for bone marrow lesions (BML) in hip osteoarthritis (OA).MethodsHIMRISS was scored by 8 readers in 360 hips of 90 patients imaged pre/post-hip steroid injection. Pre-scoring, new readers trained online to achieve intraclass correlation coefficient (ICC) > 0.80 versus experts.ResultsHIMRISS reliability was excellent for BML status (ICC 0.83-0.92). Despite small changes post-injection, reliability of BML change scores was high in femur (0.76-0.81) and moderate in acetabulum (0.42-0.56).ConclusionHIMRISS should be a priority for further assessment of hip BML in OA, and evaluated for use in other arthropathies.

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