{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T19:43:21Z","timestamp":1789242201945,"version":"build-2803163510"},"reference-count":29,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2023,6,26]],"date-time":"2023-06-26T00:00:00Z","timestamp":1687737600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["acrjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthritis Care &amp;amp; Research"],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Synovitis and tenosynovitis are present in juvenile idiopathic arthritis (JIA), both as joint pain and\/or inflammation, making them difficult to detect on physical examination. Although ultrasonography (US) allows for discrimination of the 2 entities, only definitions and scoring of synovitis in children have been established. This study was undertaken to produce consensus\u2010based US definitions of tenosynovitis in JIA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A systematic literature search was performed. Selection criteria included studies focused on US definition and scoring systems for tenosynovitis in children, as well as US metric properties. Through a 2\u2010step Delphi process, a panel of international US experts developed definitions for tenosynovitis components (step 1) and validated them by testing their applicability on US images of tenosynovitis in several age groups (step 2). A 5\u2010point Likert scale was used to rate the level of agreement.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 14 studies were identified. Most used the US definitions developed for adults to define tenosynovitis in children. Construct validity was reported in 86% of articles using physical examination as a comparator. Few studies reported US reliability and responsiveness in JIA. In step 1, experts reached a strong group agreement (&gt;86%) by applying adult definitions in children after one round. After 4 rounds of step 2, the final definitions were validated on all tendons and at all locations, except for biceps tenosynovitis in children &lt;4\u2009years old.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The study shows that the definition of tenosynovitis used in adults is applicable to children with minimal modifications agreed upon through a Delphi process. Further studies are required to confirm our results.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acr.25159","type":"journal-article","created":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T22:54:56Z","timestamp":1684882496000},"page":"2277-2284","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["<scp>OMERACT<\/scp> International Consensus for Ultrasound Definitions of Tenosynovitis in Juvenile Idiopathic Arthritis: Systematic Literature Review and Delphi Process"],"prefix":"10.1002","volume":"75","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8362-8992","authenticated-orcid":false,"given":"Paz","family":"Collado","sequence":"first","affiliation":[{"name":"Hospital Universitario Severo Ochoa and Universidad Internacional Alfonso X El Sabio  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mar\u00eda Victoria","family":"Martire","sequence":"additional","affiliation":[{"name":"Hospital San Roque de Gonnet  La Plata, Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9900-2468","authenticated-orcid":false,"given":"Stefano","family":"Lanni","sequence":"additional","affiliation":[{"name":"Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico  Milan Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2304-6661","authenticated-orcid":false,"given":"Orazio","family":"De Lucia","sequence":"additional","affiliation":[{"name":"ASST Centro Traumatologico Ortopedico G. 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