{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T01:11:18Z","timestamp":1788829878966,"version":"build-2803163510"},"reference-count":30,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2023,4,9]],"date-time":"2023-04-09T00:00:00Z","timestamp":1680998400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/100007605","name":"Aarhus Universitet","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007605","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010983","name":"Health Research Fund of Central Denmark Region","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100010983","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["acrjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthritis &amp; Rheumatology"],"published-print":{"date-parts":[[2023,7]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Sacroiliac (SI) joint magnetic resonance imaging (MRI) findings simulating sacroiliitis related to axial spondyloarthritis (SpA) may occur in women before and after birth. This study was undertaken to explore the prevalence, evolution, and topography of SI joint MRI lesions in pregnant and postpartum women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A prospective cohort study included 103 first\u2010time mothers who underwent up to 5 serial SI joint MRI between gestational week 20 and 12 months postpartum. After calibration, 3 assessors independently evaluated bone marrow edema (BME), including sacroiliitis according to the Assessment of SpondyloArthritis international Society (ASAS), as well as structural lesions, using the Spondyloarthritis Research Consortium of Canada (SPARCC) and a novel 2\u2010plane assessment method.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>BME was frequent both during pregnancy and the postpartum period, peaking at 3 months postpartum with a prevalence of 69% (SPARCC) and 80% (2\u2010plane method), but still present in 54% (SPARCC) and 58% (2\u2010plane method) of subjects at 12 months postpartum. At 12 months postpartum, sacroiliitis according to the current ASAS definition was met in 41%, while 21% and 14% of women fulfilled the newly proposed ASAS MRI thresholds for active and structural SI joint lesions, respectively. BME clustered in the anterior middle joint portions at all time points, and ligamentous BME was rare. At 12 months postpartum, SPARCC erosion scores \u22653 (ASAS threshold) were observed in only 2.8% of women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>At 12 months postpartum, 41% of women met the current ASAS sacroiliitis definition, which may result in false\u2010positive assignments of axial SpA diagnosis in postpartum women with back pain. The topographical BME distribution and virtually absent erosions (ASAS threshold) at 12 months postpartum may help discriminate postpartum strain\u2010related conditions from axial SpA\u2013related sacroiliitis.<\/jats:p><\/jats:sec>","DOI":"10.1002\/art.42457","type":"journal-article","created":{"date-parts":[[2023,1,27]],"date-time":"2023-01-27T02:15:02Z","timestamp":1674785702000},"page":"1166-1175","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Evolution of Magnetic Resonance Imaging Lesions at the Sacroiliac Joints During and After Pregnancy by Serial Magnetic Resonance Imaging From Gestational Week Twenty to Twelve Months Postpartum"],"prefix":"10.1002","volume":"75","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5537-200X","authenticated-orcid":false,"given":"Rosa Marie","family":"Kiil","sequence":"first","affiliation":[{"name":"Department of Radiology and Department of Clinical Medicine Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrich","family":"Weber","sequence":"additional","affiliation":[{"name":"Department of Radiology Aarhus University Hospital, Aarhus, Denmark, and Practice Buchsbaum, Department of Rheumatology  Schaffhausen Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne Gitte","family":"Loft","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine and Department of Rheumatology Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rikke Damkj\u00e6r","family":"Maimburg","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine and Department of Occupational Health Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2571-0466","authenticated-orcid":false,"given":"Anne Grethe","family":"Jurik","sequence":"additional","affiliation":[{"name":"Department of Radiology and Department of Clinical Medicine Aarhus University  Aarhus Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2023,4,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2009.108233"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2015-208642"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10067-015-2976-0"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2020-217095"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.41037"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.40475"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/kex491"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.40429"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1177\/02841851211017108"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-015-3903-0"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-003-0615-y"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-016-1154-0"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2020-217208"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2019-215589"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.21445"},{"key":"e_1_2_7_17_1","unstructured":"CARE Arthritis.MRI scoring modules;2018. URL:www.carearthritis.com\/service\/mri-scoring-modules\/."},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1186\/s13075-022-02760-7"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1097\/BSD.0000000000000749"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/keab099"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbi.2008.08.010"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1037\/0033-2909.86.2.420"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2282011860"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-020-03700-9"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.17.19404"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2010.147033"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2018-214983"},{"key":"e_1_2_7_28_1","first-page":"12","article-title":"Diagnosing ankylosing spondylitis","volume":"78","author":"Elyan M","year":"2006","journal-title":"J Rheumatol Suppl"},{"key":"e_1_2_7_29_1","first-page":"586","article-title":"Validation of online calibration modules for the Spondyloarthritis Research Consortium of Canada MRI scores based on real\u2010time experiential learning","volume":"69","author":"Maksymowych M","year":"2017","journal-title":"Arthritis Rheumatol"},{"key":"e_1_2_7_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/acr.24473"},{"key":"e_1_2_7_31_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2022-eular.1559"}],"container-title":["Arthritis &amp; Rheumatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/art.42457","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/art.42457","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T20:28:14Z","timestamp":1759955294000},"score":1,"resource":{"primary":{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/10.1002\/art.42457"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,9]]},"references-count":30,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2023,7]]}},"alternative-id":["10.1002\/art.42457"],"URL":"https:\/\/doi.org\/10.1002\/art.42457","archive":["Portico"],"relation":{},"ISSN":["2326-5191","2326-5205"],"issn-type":[{"value":"2326-5191","type":"print"},{"value":"2326-5205","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,4,9]]},"assertion":[{"value":"2022-08-26","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-01-19","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-04-09","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}