{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T14:04:49Z","timestamp":1790949889155,"version":"4.1.0"},"reference-count":37,"publisher":"BMJ","issue":"1","license":[{"start":{"date-parts":[[2022,1,23]],"date-time":"2022-01-23T00:00:00Z","timestamp":1642896000000},"content-version":"unspecified","delay-in-days":22,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/100020853","name":"Spondyloarthritis Research and Treatment Network","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100020853","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Canadian Research Chair","award":["Equity on Care of Rheumatic Disorders"],"award-info":[{"award-number":["Equity on Care of Rheumatic Disorders"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["RMD Open"],"accepted":{"date-parts":[[2022,1,5]]},"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>To describe the prevalence of inflammatory and structural lesions using whole spine MRI in patients with psoriatic disease, and to assess their correlation with clinical features and with axial spondyloarthritis (axSpA) classification criteria.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>This retrospective analysis included patients with whole spine and sacroiliac joints (SIJ) MRI, selected from 2 populations: (1) active psoriatic arthritis (PsA), irrespective of axial symptoms; (2) psoriasis with confirmed or suspected PsA and axSpA symptoms. MRI spondylitis and\/or sacroiliitis (MRI-SpA) was defined according to Assessment of Spondyloarthritis International Society (ASAS) consensus and by radiologist impression. Agreement between MRI-SpA and different inflammatory back pain (IBP) definitions (Berlin\/ASAS\/rheumatologist criteria) and the axSpA classification criteria were calculated considering MRI as gold standard. Logistic regression determined MRI-SpA-associated factors.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>93 patients were analysed (69.9% PsA; 30.1% psoriasis). Back pain was present in 81.7%, defined as IBP in 36.6%\u201357%. MRI-SpA was found in 9.7% of patients by ASAS definition and in 12.9% by radiologist impression, of which 25% had isolated spondylitis.<\/jats:p>\n                  <jats:p>Low agreement was found between the three IBP definitions and MRI-SpA. Rheumatologist criteria was the most sensitive (50%\u201355.6%) while ASAS and Berlin criteria were the most specific (61.9%\u201363%). axSpA criteria had poor sensitivity for MRI-SpA (22.2%\u201325%). Late onset of back pain or asymptomatic patients accounted for most cases with MRI-SpA not meeting axSpA or IBP criteria. Male sex was associated with MRI-SpA (OR 6.91; 95%\u2009CI 1.42 to 33.59) in multivariable regression analysis.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>Prevalence of MRI-defined axSpA was low and showed poor agreement with IBP and axSpA criteria.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/rmdopen-2021-002011","type":"journal-article","created":{"date-parts":[[2022,1,24]],"date-time":"2022-01-24T11:42:42Z","timestamp":1643024562000},"page":"e002011","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":20,"title":["Characterising axial psoriatic arthritis: correlation between whole spine MRI abnormalities and clinical, laboratory and radiographic findings"],"prefix":"10.1136","volume":"8","author":[{"given":"Pamela","family":"Diaz","sequence":"first","affiliation":[{"name":"Department of Medicine, University of Toronto Temerty Faculty of Medicine, Toronto, Ontario, Canada"},{"name":"Women's College Research Institute, Toronto, Ontario, Canada"},{"name":"Departamento de Inmunolog\u00eda Cl\u00ednica y Reumatolog\u00eda, Pontificia Universidad Cat\u00f3lica de Chile, Santiago, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joy","family":"Feld","sequence":"additional","affiliation":[{"name":"Rheumatology Unit, Carmel Hospital, Haifa, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4655-9606","authenticated-orcid":false,"given":"Iris","family":"Eshed","sequence":"additional","affiliation":[{"name":"Radiology, Sheba Medical Center, affiliated to the Sackler School of Medicine, Tel Aviv University, Tel Hashomer, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1473-1715","authenticated-orcid":false,"given":"Lihi","family":"Eder","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto Temerty Faculty of Medicine, Toronto, Ontario, Canada"},{"name":"Women's College Research Institute, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2022,1,24]]},"reference":[{"key":"2025090313420744000_8.1.e002011.1","doi-asserted-by":"crossref","first-page":"1573","DOI":"10.1136\/annrheumdis-2018-213334","article-title":"Back pain in psoriatic arthritis: defining prevalence, characteristics and performance of inflammatory back pain criteria in psoriatic arthritis","volume":"77","author":"Yap","year":"2018","journal-title":"Ann Rheum Dis"},{"key":"2025090313420744000_8.1.e002011.2","doi-asserted-by":"crossref","first-page":"n\/a","DOI":"10.1002\/art.39573","article-title":"Group for research and assessment of psoriasis and psoriatic arthritis 2015 treatment recommendations for psoriatic arthritis","volume":"68","author":"Coates","year":"2016","journal-title":"Arthritis Rheumatol"},{"key":"2025090313420744000_8.1.e002011.3","doi-asserted-by":"crossref","first-page":"700.1","DOI":"10.1136\/annrheumdis-2020-217159","article-title":"EULAR recommendations for the management of psoriatic arthritis with pharmacological therapies: 2019 update","volume":"79","author":"Gossec","year":"2020","journal-title":"Ann Rheum Dis"},{"key":"2025090313420744000_8.1.e002011.4","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1038\/s41584-018-0006-8","article-title":"Axial disease in psoriatic arthritis and ankylosing spondylitis: a critical comparison","volume":"14","author":"Feld","year":"2018","journal-title":"Nat Rev Rheumatol"},{"key":"2025090313420744000_8.1.e002011.5","doi-asserted-by":"crossref","first-page":"1340","DOI":"10.1093\/rheumatology\/kez457","article-title":"Is axial psoriatic arthritis distinct from ankylosing spondylitis with and without concomitant psoriasis?","volume":"59","author":"Feld","year":"2020","journal-title":"Rheumatology"},{"key":"2025090313420744000_8.1.e002011.6","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2009.110767"},{"key":"2025090313420744000_8.1.e002011.7","doi-asserted-by":"crossref","unstructured":"Gladman DD , Helliwell PS , Poddubnyy D , et al . 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