{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T00:44:25Z","timestamp":1792370665938,"version":"4.4.0"},"reference-count":52,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T00:00:00Z","timestamp":1759104000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"},{"start":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T00:00:00Z","timestamp":1759104000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"funder":[{"DOI":"10.13039\/501100001734","name":"Copenhagen University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100001734","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Arthritis Res Ther"],"DOI":"10.1186\/s13075-025-03652-2","type":"journal-article","created":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T16:35:28Z","timestamp":1759163728000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Sacroiliac joint involvement in psoriatic arthritis \u2013 MRI, radiographic and clinical findings in 581 European routine care patients"],"prefix":"10.1186","volume":"27","author":[{"given":"Nora","family":"Vladimirova","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna EF","family":"Hadsbjerg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon","family":"Krabbe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adrian","family":"Ciurea","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Krist\u00fdna","family":"Bubov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monika","family":"Gregov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J.","family":"Nissen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Burkhard","family":"M\u00f6ller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raphael","family":"Micheroli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susanne J.","family":"Pedersen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jakub","family":"Z\u00e1vada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziga","family":"Snoj","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karlo","family":"Pintaric","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bjorn","family":"Gudbjornsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziga","family":"Rotar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iris","family":"Eshed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Iwona","family":"Sudol-Szopinska","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kasper","family":"Gosvig","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Torsten","family":"Diekhoff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert GW","family":"Lambert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manouk","family":"de Hooge","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maurice","family":"Donzallaz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander","family":"Bernatschek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Merete Lund","family":"Hetland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lykke M","family":"\u00d8rnbjerg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikkel","family":"\u00d8stergaard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,9,29]]},"reference":[{"issue":"12","key":"3652_CR1","doi-asserted-by":"publisher","first-page":"1511","DOI":"10.1136\/annrheumdis-2021-221035","volume":"80","author":"V Navarro-Comp\u00e1n","year":"2021","unstructured":"Navarro-Comp\u00e1n V, et al. Axial spondyloarthritis. Ann Rheum Dis. 2021;80(12):1511\u201321.","journal-title":"Ann Rheum Dis"},{"issue":"1","key":"3652_CR2","doi-asserted-by":"publisher","first-page":"25","DOI":"10.1136\/ard.2010.133645","volume":"70","author":"M Rudwaleit","year":"2011","unstructured":"Rudwaleit M, et al. The assessment of spondyloarthritis international society classification criteria for peripheral spondyloarthritis and for spondyloarthritis in general. Ann Rheum Dis. 2011;70(1):25\u201331.","journal-title":"Ann Rheum Dis"},{"key":"3652_CR3","unstructured":"Coates LC et al. GRAPPA treatment recommendations: 2021 update. J Rhuematol, 2022;Jun;49(6 Suppl 1):52-54. doi: 10.3899\/jrheum211331.Epub 2022 Mar 15. PMID: 35293339."},{"issue":"6","key":"3652_CR4","doi-asserted-by":"publisher","first-page":"706","DOI":"10.1136\/ard-2024-225531","volume":"83","author":"L Gossec","year":"2024","unstructured":"Gossec L, et al. EULAR recommendations for the management of psoriatic arthritis with Pharmacological therapies: 2023 update. Ann Rheum Dis. 2024;83(6):706\u201319.","journal-title":"Ann Rheum Dis"},{"issue":"8","key":"3652_CR5","doi-asserted-by":"publisher","first-page":"2665","DOI":"10.1002\/art.21972","volume":"54","author":"W Taylor","year":"2006","unstructured":"Taylor W, et al. Classification criteria for psoriatic arthritis: development of new criteria from a large international study. Arthritis Rheum. 2006;54(8):2665\u201373.","journal-title":"Arthritis Rheum"},{"issue":"5","key":"3652_CR6","doi-asserted-by":"publisher","first-page":"582","DOI":"10.1136\/annrheumdis-2020-218808","volume":"80","author":"X Baraliakos","year":"2021","unstructured":"Baraliakos X, et al. Secukinumab in patients with psoriatic arthritis and axial manifestations: results from the double-blind, randomised, phase 3 MAXIMISE trial. Ann Rheum Dis. 2021;80(5):582\u201390.","journal-title":"Ann Rheum Dis"},{"issue":"10230","key":"3652_CR7","doi-asserted-by":"publisher","first-page":"1115","DOI":"10.1016\/S0140-6736(20)30265-8","volume":"395","author":"A Deodhar","year":"2020","unstructured":"Deodhar A, et al. Guselkumab in patients with active psoriatic arthritis who were biologic-naive or had previously received TNF\u03b1 inhibitor treatment (DISCOVER-1): a double-blind, randomised, placebo-controlled phase 3 trial. Lancet. 2020;395(10230):1115\u201325.","journal-title":"Lancet"},{"issue":"11","key":"3652_CR8","doi-asserted-by":"publisher","first-page":"1984","DOI":"10.1136\/annrheumdis-2015-209068","volume":"75","author":"A Kavanaugh","year":"2016","unstructured":"Kavanaugh A, et al. Efficacy and safety of ustekinumab in psoriatic arthritis patients with peripheral arthritis and physician-reported spondylitis: post-hoc analyses from two phase III, multicentre, double-blind, placebo-controlled studies (PSUMMIT-1\/PSUMMIT-2). Ann Rheum Dis. 2016;75(11):1984\u20138.","journal-title":"Ann Rheum Dis"},{"key":"3652_CR9","doi-asserted-by":"crossref","unstructured":"Alascio L et al. Axial disease in psoriatic arthritis: A challenging domain in clinical practice. Diagnostics (Basel), 2024;14(15).","DOI":"10.3390\/diagnostics14151637"},{"key":"3652_CR10","doi-asserted-by":"publisher","first-page":"1759720x2110579","DOI":"10.1177\/1759720X211057975","volume":"13","author":"D Poddubnyy","year":"2021","unstructured":"Poddubnyy D, et al. Axial involvement in psoriatic arthritis cohort (AXIS): the protocol of a joint project of the assessment of spondyloarthritis international society (ASAS) and the group for research and assessment of psoriasis and psoriatic arthritis (GRAPPA). Ther Adv Musculoskelet Dis. 2021;13:1759720x211057975.","journal-title":"Ther Adv Musculoskelet Dis"},{"issue":"4","key":"3652_CR11","doi-asserted-by":"publisher","first-page":"880","DOI":"10.1016\/j.semarthrit.2021.06.006","volume":"51","author":"D Poddubnyy","year":"2021","unstructured":"Poddubnyy D, et al. Axial involvement in psoriatic arthritis: an update for rheumatologists. Semin Arthritis Rheum. 2021;51(4):880\u20137.","journal-title":"Semin Arthritis Rheum"},{"issue":"10","key":"3652_CR12","doi-asserted-by":"publisher","first-page":"1389","DOI":"10.3899\/jrheum.171094","volume":"45","author":"PJ Mease","year":"2018","unstructured":"Mease PJ, et al. Influence of axial involvement on clinical characteristics of psoriatic arthritis: analysis from the Corrona psoriatic arthritis\/spondyloarthritis registry. J Rheumatol. 2018;45(10):1389\u201396.","journal-title":"J Rheumatol"},{"issue":"12","key":"3652_CR13","doi-asserted-by":"publisher","first-page":"3443","DOI":"10.1007\/s10067-018-4173-4","volume":"37","author":"SZ Aydin","year":"2018","unstructured":"Aydin SZ, et al. Axial psoriatic arthritis: the impact of underdiagnosed disease on outcomes in real life. Clin Rheumatol. 2018;37(12):3443\u20138.","journal-title":"Clin Rheumatol"},{"issue":"6","key":"3652_CR14","doi-asserted-by":"publisher","first-page":"497","DOI":"10.1007\/s40265-023-01857-w","volume":"83","author":"D Poddubnyy","year":"2023","unstructured":"Poddubnyy D. Managing psoriatic arthritis patients presenting with axial symptoms. Drugs. 2023;83(6):497\u2013505.","journal-title":"Drugs"},{"issue":"6","key":"3652_CR15","doi-asserted-by":"publisher","first-page":"363","DOI":"10.1038\/s41584-018-0006-8","volume":"14","author":"J Feld","year":"2018","unstructured":"Feld J, et al. Axial disease in psoriatic arthritis and ankylosing spondylitis: a critical comparison. Nat Rev Rheumatol. 2018;14(6):363\u201371.","journal-title":"Nat Rev Rheumatol"},{"issue":"2","key":"3652_CR16","doi-asserted-by":"publisher","first-page":"464","DOI":"10.1016\/j.semarthrit.2021.03.007","volume":"51","author":"J Feld","year":"2021","unstructured":"Feld J, et al. Axial disease in psoriatic arthritis: the presence and progression of unilateral grade 2 sacroiliitis in a psoriatic arthritis cohort. Semin Arthritis Rheum. 2021;51(2):464\u20138.","journal-title":"Semin Arthritis Rheum"},{"issue":"1","key":"3652_CR17","first-page":"1","volume":"16","author":"DD Gladman","year":"1993","unstructured":"Gladman DD, et al. Differences in the expression of spondyloarthropathy: a comparison between ankylosing spondylitis and psoriatic arthritis. Clin Invest Med. 1993;16(1):1\u20137.","journal-title":"Clin Invest Med"},{"issue":"1","key":"3652_CR18","doi-asserted-by":"publisher","first-page":"11580","DOI":"10.1038\/s41598-020-68456-7","volume":"10","author":"MV Braga","year":"2020","unstructured":"Braga MV, et al. Prevalence of sacroiliitis and acute and structural changes on MRI in patients with psoriatic arthritis. Sci Rep. 2020;10(1):11580.","journal-title":"Sci Rep"},{"issue":"1","key":"3652_CR19","doi-asserted-by":"publisher","first-page":"e002011","DOI":"10.1136\/rmdopen-2021-002011","volume":"8","author":"P Diaz","year":"2022","unstructured":"Diaz P, et al. Characterising axial psoriatic arthritis: correlation between whole spine MRI abnormalities and clinical, laboratory and radiographic findings. RMD Open. 2022;8(1):e002011.","journal-title":"RMD Open"},{"issue":"7","key":"3652_CR20","doi-asserted-by":"publisher","first-page":"1014","DOI":"10.3899\/jrheum.200961","volume":"48","author":"V Furer","year":"2021","unstructured":"Furer V, et al. Prevalence of nonradiographic sacroiliitis in patients with psoriatic arthritis: A Real-life observational study. J Rheumatol. 2021;48(7):1014\u201321.","journal-title":"J Rheumatol"},{"issue":"5","key":"3652_CR21","first-page":"24","volume":"36","author":"SK Felbo","year":"2018","unstructured":"Felbo SK, Terslev L, \u00d8stergaard M. Imaging in peripheral and axial psoriatic arthritis: contributions to diagnosis, follow-up, prognosis and knowledge of pathogenesis. Clin Exp Rheumatol. 2018;36(5):24\u201334.","journal-title":"Clin Exp Rheumatol"},{"issue":"9","key":"3652_CR22","doi-asserted-by":"publisher","first-page":"1502","DOI":"10.1136\/annrheumdis-2016-210640","volume":"76","author":"T Diekhoff","year":"2017","unstructured":"Diekhoff T, et al. Comparison of MRI with radiography for detecting structural lesions of the sacroiliac joint using CT as standard of reference: results from the SIMACT study. Ann Rheum Dis. 2017;76(9):1502\u20138.","journal-title":"Ann Rheum Dis"},{"issue":"2","key":"3652_CR23","first-page":"138","volume":"52","author":"G Alle","year":"2025","unstructured":"Alle G, et al. Patient profiles in randomized controlled trials versus a Real-World study in psoriatic arthritis: scoping review and metaanalysis. J Rheumatol. 2025;52(2):138\u201344.","journal-title":"J Rheumatol"},{"key":"3652_CR24","unstructured":"https:\/\/eurospa.eu."},{"key":"3652_CR25","doi-asserted-by":"crossref","unstructured":"Maksymowych W et al. Validation of SPARCC MRI-RETIC e-tools for increasing scoring proficiency of MRI sacroiliac joint lesions in axial spondyloarth. RMD Open, 2024;10(1).","DOI":"10.1136\/rmdopen-2023-003923"},{"key":"3652_CR26","doi-asserted-by":"crossref","unstructured":"Hadsbjerg AEF et al. Effect of online training on the reliability of assessing sacroiliac joint radiographs in axial spondyloarthritis: A randomized, controlled study. J Rheumatol, 2024.","DOI":"10.3899\/jrheum.2024-0075"},{"issue":"6","key":"3652_CR27","doi-asserted-by":"publisher","first-page":"777","DOI":"10.1136\/ard.2009.108233","volume":"68","author":"M Rudwaleit","year":"2009","unstructured":"Rudwaleit M, et al. The development of assessment of spondyloarthritis international society classification criteria for axial spondyloarthritis (part II): validation and final selection. Ann Rheum Dis. 2009;68(6):777\u201383.","journal-title":"Ann Rheum Dis"},{"issue":"11","key":"3652_CR28","doi-asserted-by":"publisher","first-page":"1550","DOI":"10.1136\/annrheumdis-2019-215589","volume":"78","author":"WP Maksymowych","year":"2019","unstructured":"Maksymowych WP, et al. MRI lesions in the sacroiliac joints of patients with spondyloarthritis: an update of definitions and validation by the ASAS MRI working group. Ann Rheum Dis. 2019;78(11):1550\u20138.","journal-title":"Ann Rheum Dis"},{"issue":"11","key":"3652_CR29","doi-asserted-by":"publisher","first-page":"1958","DOI":"10.1136\/annrheumdis-2015-208642","volume":"75","author":"RG Lambert","year":"2016","unstructured":"Lambert RG, et al. Defining active sacroiliitis on MRI for classification of axial spondyloarthritis: update by the ASAS MRI working group. Ann Rheum Dis. 2016;75(11):1958\u201363.","journal-title":"Ann Rheum Dis"},{"issue":"4","key":"3652_CR30","doi-asserted-by":"publisher","first-page":"361","DOI":"10.1002\/art.1780270401","volume":"27","author":"SVD Linden","year":"1984","unstructured":"Linden SVD, Valkenburg HA, Cats A. Evaluation of diagnostic criteria for ankylosing spondylitis. Arthr Rhuem. 1984;27(4):361\u20138.","journal-title":"Arthr Rhuem"},{"issue":"2","key":"3652_CR31","doi-asserted-by":"publisher","first-page":"e002513","DOI":"10.1136\/rmdopen-2022-002513","volume":"8","author":"X Michelena","year":"2022","unstructured":"Michelena X, et al. Characterising the axial phenotype of psoriatic arthritis: a study comparing axial psoriatic arthritis and ankylosing spondylitis with psoriasis from the REGISPONSER registry. RMD Open. 2022;8(2):e002513.","journal-title":"RMD Open"},{"key":"3652_CR32","doi-asserted-by":"crossref","unstructured":"Ciurea A et al. Characterisation of patients with axial psoriatic arthritis and patients with axial spondyloarthritis and concomitant psoriasis in the SCQM registry. RMD Open, 2023;9(2).","DOI":"10.1136\/rmdopen-2022-002956"},{"key":"3652_CR33","doi-asserted-by":"crossref","unstructured":"Regierer AC et al. Comparison of patients with axial PsA and patients with AxSpA and concomitant psoriasis: an analysis of the German register RABBIT-SpA. RMD Open, 2023;9(1).","DOI":"10.1136\/rmdopen-2022-002837"},{"issue":"1","key":"3652_CR34","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1093\/rheumatology\/keg475","volume":"43","author":"L Williamson","year":"2004","unstructured":"Williamson L, et al. Clinical assessment of sacroiliitis and HLA-B27 are poor predictors of sacroiliitis diagnosed by magnetic resonance imaging in psoriatic arthritis. Rheumatology (Oxford). 2004;43(1):85\u20138.","journal-title":"Rheumatology (Oxford)"},{"issue":"6","key":"3652_CR35","doi-asserted-by":"publisher","first-page":"1039","DOI":"10.1093\/rheumatology\/keu439","volume":"54","author":"RP Poggenborg","year":"2015","unstructured":"Poggenborg RP, et al. Head-to-toe whole-body MRI in psoriatic arthritis, axial spondyloarthritis and healthy subjects: first steps towards global inflammation and damage scores of peripheral and axial joints. Rheumatology (Oxford). 2015;54(6):1039\u201349.","journal-title":"Rheumatology (Oxford)"},{"issue":"3","key":"3652_CR36","doi-asserted-by":"publisher","first-page":"e231786","DOI":"10.1148\/radiol.231786","volume":"311","author":"T Diekhoff","year":"2024","unstructured":"Diekhoff T, et al. Reporting sacroiliac joint imaging performed for known or suspected axial spondyloarthritis: assessment of spondyloarthritis international society recommendations. Radiology. 2024;311(3):e231786.","journal-title":"Radiology"},{"issue":"4","key":"3652_CR37","doi-asserted-by":"publisher","first-page":"701","DOI":"10.1136\/annrheumdis-2016-209853","volume":"76","author":"DR Jadon","year":"2017","unstructured":"Jadon DR, et al. Axial disease in psoriatic arthritis study: defining the clinical and radiographic phenotype of psoriatic spondyloarthritis. Ann Rheum Dis. 2017;76(4):701\u20137.","journal-title":"Ann Rheum Dis"},{"issue":"6","key":"3652_CR38","doi-asserted-by":"publisher","first-page":"413","DOI":"10.1053\/sarh.2002.33470","volume":"31","author":"R Queiro","year":"2002","unstructured":"Queiro R, et al. Psoriatic spondyloarthropathy: a comparative study between HLA-B27 positive and HLA-B27 negative disease. Semin Arthritis Rheum. 2002;31(6):413\u20138.","journal-title":"Semin Arthritis Rheum"},{"issue":"9","key":"3652_CR39","doi-asserted-by":"publisher","first-page":"2274","DOI":"10.1002\/art.38050","volume":"65","author":"C Castillo-Gallego","year":"2013","unstructured":"Castillo-Gallego C, et al. Magnetic resonance imaging assessment of axial psoriatic arthritis: extent of disease relates to HLA-B27. Arthritis Rheum. 2013;65(9):2274\u20138.","journal-title":"Arthritis Rheum"},{"issue":"7","key":"3652_CR40","doi-asserted-by":"publisher","first-page":"333","DOI":"10.1002\/acr2.11555","volume":"5","author":"A Deodhar","year":"2023","unstructured":"Deodhar A, Gill T, Magrey M. Human leukocyte antigen B27-Negative axial spondyloarthritis: what do we know?? ACR Open Rheumatol. 2023;5(7):333\u201344.","journal-title":"ACR Open Rheumatol"},{"issue":"2","key":"3652_CR41","first-page":"176","volume":"42","author":"PD Carvalho","year":"2017","unstructured":"Carvalho PD, et al. Axial involvement according to ASAS criteria in an observational psoriatic arthritis cohort. Acta Reumatol Port. 2017;42(2):176\u201382.","journal-title":"Acta Reumatol Port"},{"issue":"4","key":"3652_CR42","doi-asserted-by":"publisher","first-page":"329","DOI":"10.1097\/BOR.0000000000000609","volume":"31","author":"V Chandran","year":"2019","unstructured":"Chandran V. Psoriatic spondylitis or ankylosing spondylitis with psoriasis: same or different? Curr Opin Rheumatol. 2019;31(4):329\u201334.","journal-title":"Curr Opin Rheumatol"},{"issue":"1","key":"3652_CR43","doi-asserted-by":"publisher","first-page":"10","DOI":"10.1007\/s100670200003","volume":"21","author":"R Queiro","year":"2002","unstructured":"Queiro R, et al. Clinically asymptomatic axial disease in psoriatic spondyloarthropathy. A retrospective study. Clin Rheumatol. 2002;21(1):10\u20133.","journal-title":"Clin Rheumatol"},{"issue":"6","key":"3652_CR44","doi-asserted-by":"publisher","first-page":"1340","DOI":"10.1093\/rheumatology\/kez457","volume":"59","author":"J Feld","year":"2020","unstructured":"Feld J, et al. Is axial psoriatic arthritis distinct from ankylosing spondylitis with and without concomitant psoriasis? Rheumatology (Oxford). 2020;59(6):1340\u20136.","journal-title":"Rheumatology (Oxford)"},{"issue":"11","key":"3652_CR45","doi-asserted-by":"publisher","first-page":"1534","DOI":"10.1136\/ard-2022-222562","volume":"81","author":"F Proft","year":"2022","unstructured":"Proft F, et al. Early identification of axial psoriatic arthritis among patients with psoriasis: a prospective multicentre study. Ann Rheum Dis. 2022;81(11):1534\u201340.","journal-title":"Ann Rheum Dis"},{"issue":"1","key":"3652_CR46","doi-asserted-by":"publisher","first-page":"70","DOI":"10.3899\/jrheum.160079","volume":"44","author":"AA Christiansen","year":"2017","unstructured":"Christiansen AA, et al. Limited reliability of radiographic assessment of sacroiliac joints in patients with suspected early spondyloarthritis. J Rheumatol. 2017;44(1):70\u20137.","journal-title":"J Rheumatol"},{"issue":"6 Suppl 1","key":"3652_CR47","first-page":"72","volume":"49","author":"WP Maksymowych","year":"2022","unstructured":"Maksymowych WP, \u00d8stergaard M. What constitutes a positive MRI for clinical trial recruitment of psoriatic arthritis patients with axial involvement?? J Rheumatol. 2022;49(6 Suppl 1):72\u20134.","journal-title":"J Rheumatol"},{"issue":"1","key":"3652_CR48","doi-asserted-by":"publisher","first-page":"47","DOI":"10.1002\/art.42967","volume":"77","author":"WP Maksymowych","year":"2025","unstructured":"Maksymowych WP, et al. Features of axial spondyloarthritis in two multicenter cohorts of patients with psoriasis, uveitis, and colitis presenting with undiagnosed back pain. Arthritis Rheumatol. 2025;77(1):47\u201358.","journal-title":"Arthritis Rheumatol"},{"key":"3652_CR49","doi-asserted-by":"crossref","unstructured":"Baraliakos X, et al. MRI lesions of the spine in patients with axial spondyloarthritis: an update of lesion definitions and validation by the ASAS MRI working group. Ann Rheum Dis. 2022.","DOI":"10.1136\/annrheumdis-2021-222081"},{"issue":"10","key":"3652_CR50","doi-asserted-by":"publisher","first-page":"4778","DOI":"10.1093\/rheumatology\/keab099","volume":"60","author":"WP Maksymowych","year":"2021","unstructured":"Maksymowych WP, et al. Data-driven definitions for active and structural MRI lesions in the sacroiliac joint in spondyloarthritis and their predictive utility. Rheumatology (Oxford). 2021;60(10):4778\u201389.","journal-title":"Rheumatology (Oxford)"},{"key":"3652_CR51","doi-asserted-by":"crossref","unstructured":"\u00d8stergaard M. MRI of the sacroiliac joints: what is and what is not sacroiliitis? Curr Opin Rheumatol, 2020;32(4).","DOI":"10.1097\/BOR.0000000000000718"},{"issue":"12","key":"3652_CR52","doi-asserted-by":"publisher","first-page":"1678","DOI":"10.1136\/ard-2022-222537","volume":"81","author":"TSH Kwok","year":"2022","unstructured":"Kwok TSH, et al. Isolated axial disease in psoriatic arthritis and ankylosing spondylitis with psoriasis. Ann Rheum Dis. 2022;81(12):1678\u201384.","journal-title":"Ann Rheum Dis"}],"container-title":["Arthritis Research &amp; Therapy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s13075-025-03652-2.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s13075-025-03652-2\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s13075-025-03652-2.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T22:02:51Z","timestamp":1759615371000},"score":1,"resource":{"primary":{"URL":"https:\/\/arthritis-research.biomedcentral.com\/articles\/10.1186\/s13075-025-03652-2"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9,29]]},"references-count":52,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025,12]]}},"alternative-id":["3652"],"URL":"https:\/\/doi.org\/10.1186\/s13075-025-03652-2","relation":{},"ISSN":["1478-6362"],"issn-type":[{"value":"1478-6362","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9,29]]},"assertion":[{"value":"4 June 2025","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 September 2025","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"29 September 2025","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"4 October 2025","order":4,"name":"change_date","label":"Change Date","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"Update","order":5,"name":"change_type","label":"Change Type","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"Graphical abstract has been updated with colored figure.","order":6,"name":"change_details","label":"Change Details","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Ethical approval and informed consent were not applicable for this study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"185"}}