{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T22:15:14Z","timestamp":1787004914088,"version":"build-2736575974"},"reference-count":14,"publisher":"Georg Thieme Verlag KG","issue":"02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Semin Musculoskelet Radiol"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Anatomical variants are frequently encountered when assessing the sacroiliac joints (SIJ) using magnetic resonance imaging. When not located in the weight-bearing part of the SIJ, variants associated with structural and edematous changes can be misinterpreted as sacroiliitis. Their correct identification is necessary to avoid radiologic pitfalls. This article reviews five SIJ variants involved in the dorsal ligamentous space (accessory SIJ, iliosacral complex, semicircular defect, bipartite iliac bony plate, and crescent iliac bony plate) and three SIJ variants involved in the cartilaginous part of the SIJ (posterior dysmorphic SIJ, isolated synostosis, and unfused ossification centers).<\/jats:p>","DOI":"10.1055\/s-0043-1761954","type":"journal-article","created":{"date-parts":[[2023,4,3]],"date-time":"2023-04-03T18:32:15Z","timestamp":1680546735000},"page":"221-225","source":"Crossref","is-referenced-by-count":10,"title":["Anatomical Variants of the Sacroiliac Joint"],"prefix":"10.1055","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3485-6531","authenticated-orcid":false,"given":"Sammy","family":"Badr","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"},{"name":"CHU Lille, University Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huda","family":"Khizindar","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youssef","family":"Boulil","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ralph","family":"Abou Diwan","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Demondion","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5732-0783","authenticated-orcid":false,"given":"Anne","family":"Cotten","sequence":"additional","affiliation":[{"name":"Department of Musculoskeletal Imaging, University of Lille, CHU Lille, Lille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2023,4,3]]},"reference":[{"issue":"12","key":"ref1","doi-asserted-by":"crossref","first-page":"5328","DOI":"10.1007\/s00330-018-5540-x","article-title":"Sacroiliac joints: anatomical variations on MR images","volume":"28","author":"M El Rafei","year":"2018","journal-title":"Eur Radiol"},{"issue":"01","key":"ref2","doi-asserted-by":"crossref","first-page":"388","DOI":"10.1093\/rheumatology\/keab318","article-title":"Joint anatomy in axial spondyloarthritis: strong associations between sacroiliac joint form variation and symptomatic disease","volume":"61","author":"K Ziegeler","year":"2021","journal-title":"Rheumatology (Oxford)"},{"issue":"02","key":"ref3","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1097\/00004728-199903000-00029","article-title":"Sacroiliac joints: anatomical variants on CT","volume":"23","author":"P K Prassopoulos","year":"1999","journal-title":"J Comput Assist Tomogr"},{"issue":"03","key":"ref4","doi-asserted-by":"crossref","first-page":"595","DOI":"10.1007\/s00256-021-03843-3","article-title":"Anatomical variation at the sacroiliac joints in young adults: estimated prevalence by CT and concomitant diagnostics by MRI","volume":"51","author":"R M Kiil","year":"2022","journal-title":"Skeletal Radiol"},{"issue":"03","key":"ref5","doi-asserted-by":"crossref","first-page":"403","DOI":"10.1148\/55.3.403","article-title":"Accessory sacroiliac articulations with arthritic changes","volume":"55","author":"L A Hadley","year":"1950","journal-title":"Radiology"},{"issue":"06","key":"ref6","doi-asserted-by":"crossref","first-page":"819","DOI":"10.1007\/s00276-021-02714-9","article-title":"Anatomical variations of the sacro-iliac joint: a computed tomography study","volume":"43","author":"R Teran-Garza","year":"2021","journal-title":"Surg Radiol Anat"},{"issue":"04","key":"ref7","doi-asserted-by":"crossref","first-page":"857","DOI":"10.2214\/ajr.150.4.857","article-title":"The accessory sacroiliac joint: a common anatomic variant","volume":"150","author":"S Ehara","year":"1988","journal-title":"AJR Am J Roentgenol"},{"issue":"05","key":"ref8","first-page":"209","article-title":"Anatomical variations with joint space measurements on CT","volume":"53","author":"M Demir","year":"2007","journal-title":"Kobe J Med Sci"},{"issue":"06","key":"ref9","doi-asserted-by":"crossref","first-page":"496","DOI":"10.3109\/03009740903036008","article-title":"An accessory sacroiliac joint","volume":"38","author":"N S Rosa Neto","year":"2009","journal-title":"Scand J Rheumatol"},{"issue":"04","key":"ref10","doi-asserted-by":"crossref","first-page":"449","DOI":"10.1177\/0284185116656490","article-title":"Prevalence and awareness of sacroiliac joint alterations on lumbar spine CT in low back pain patients younger than 40 years","volume":"58","author":"E Klang","year":"2017","journal-title":"Acta Radiol"},{"issue":"08","key":"ref11","doi-asserted-by":"crossref","first-page":"876","DOI":"10.1002\/ca.20772","article-title":"The frequency of accessory sacroiliac joints","volume":"22","author":"J D Fortin","year":"2009","journal-title":"Clin Anat"},{"issue":"09","key":"ref12","doi-asserted-by":"crossref","first-page":"2367","DOI":"10.1002\/art.38691","article-title":"Synostosis of the sacroiliac joint as a developmental variant, or ankylosis due to sacroiliitis?","volume":"66","author":"R M Benz","year":"2014","journal-title":"Arthritis Rheumatol"},{"issue":"06","key":"ref13","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1002\/ca.23539","article-title":"Frequency of anatomical variation of the sacroiliac joint in asymptomatic young adults and its relationship with sacroiliac joint degeneration","volume":"33","author":"S Tok Umay","year":"2020","journal-title":"Clin Anat"},{"issue":"11","key":"ref14","doi-asserted-by":"crossref","first-page":"2001","DOI":"10.3390\/diagnostics11112001","article-title":"Main diagnostic pitfalls in reading the sacroiliac joints on MRI","volume":"11","author":"S Badr","year":"2021","journal-title":"Diagnostics (Basel)"}],"container-title":["Seminars in Musculoskeletal Radiology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0043-1761954.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,4,3]],"date-time":"2023-04-03T18:37:16Z","timestamp":1680547036000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0043-1761954"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4]]},"references-count":14,"journal-issue":{"issue":"02","published-online":{"date-parts":[[2023,4,3]]},"published-print":{"date-parts":[[2023,4]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0043-1761954","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["1089-7860","1098-898X"],"issn-type":[{"value":"1089-7860","type":"print"},{"value":"1098-898X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,4]]}}}