11/29/2023 0 Comments Viera diagnostics mriThe accessory sacroiliac joint: a common anatomic variant. Morphometric anatomical and CT study of the human adult sacroiliac region. Postacchini R, Trasimeni G, Ripani F, Sessa P, Perotti S, Postacchini F. The aging process in the sacroiliac joint: helical computed tomography analysis. The normal sacroiliac joint: a CT study of asymptomatic patients. Vogler JB, Brown WH, Helms CA, Genant HK. Anatomy of the sacroiliac joints in children and adolescents by computed tomography. Anatomy and histology of the sacroiliac joints. Most of the variations were detectable by MRI and three variations warrant further exploration as they often were accompanied by symptoms and/or BME.Įgund N, Jurik AG. ConclusionĪtypical SIJ morphology is frequent in young adults, especially females, demanding further research into the anatomical natural variation. Dysmorphic cartilaginous joint facets, accessory SIJ, and iliosacral complex were frequently observed in individuals reporting symptoms and were accompanied by BME, often located anteriorly in sacrum/inferiorly in ilium. The ability of MRI to detect the frequent variations was satisfying. Mean age of the 155 individuals was 28 years, 99 (64%) were males 88 (57%) had at least one SIJ variation, and most frequent were dysmorphic cartilaginous joint facets ( n = 33, 21%), bipartite iliac bony plate ( n = 27, 17%), accessory SIJ ( n = 24, 16%), and iliosacral complex ( n = 18, 12%), with a female predominance of all variations. ResultsĬT and MRI interobserver agreements were good or very good for most variations. The CT and MRIs were analyzed by two musculoskeletal radiologists regarding seven SIJ variations and additional subchondral bone marrow edema (BME) by MRI. The study sample constituted CT examinations of 155 individuals aged 18–40 years and prospectively collected comparative SIJ MRI examinations of 49, who also filled out a questionnaire on back and buttock pain. To estimate the prevalence of atypical anatomical morphologies at the sacroiliac joints (SIJ) in young adults by CT and analyze the diagnostic ability of MRI to detect the variations in addition to concomitant MRI findings that could be misdiagnosed as inflammatory changes.
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