{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T11:01:33Z","timestamp":1790074893805,"version":"4.0.1"},"reference-count":28,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2013,7,1]],"date-time":"2013-07-01T00:00:00Z","timestamp":1372636800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis Care &amp; Research"],"published-print":{"date-parts":[[2013,7]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To describe the prevalence of sternoclavicular (SC) joint involvement and the relationship between clinical and ultrasound (US) findings in patients with rheumatoid arthritis (RA).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>One hundred three consecutive patients with RA and 103 age\u2010 and sex\u2010matched healthy individuals were enrolled. Clinical evaluation and blinded US examinations of the SC joint were performed bilaterally in both groups. The presence of gray\u2010scale synovitis, osteophytes, erosions, and intraarticular power Doppler (PD) was recorded. Interobserver agreement was calculated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 412 SC joints were evaluated: 206 from patients with RA and 206 from healthy controls. In the RA group, 39 joints (19%) were found to be clinically involved (pain\/swelling), in contrast to only 4 (1.9%) in the control group (<jats:italic>P<\/jats:italic> = 0.0001). In the RA group, US abnormalities were recorded in 89 SC joints (43%) compared with 36 (17%) in the healthy control group (<jats:italic>P<\/jats:italic> = 0.0001), comprising osteophytes in 59 (29%) versus 25 (12%; <jats:italic>P<\/jats:italic> = 0.0001), synovitis in 31 (15%) versus 5 (2%; <jats:italic>P<\/jats:italic> = 0.0001), erosions in 23 (11%) versus none (<jats:italic>P<\/jats:italic> = 0.0001), and intraarticular PD in 5 (2%) versus none (<jats:italic>P<\/jats:italic> = 0.03). Furthermore, a correlation between the presence of US synovitis (<jats:italic>P<\/jats:italic> &lt; 0.001) and intraarticular PD (<jats:italic>P<\/jats:italic> &lt; 0.0001) with a higher Disease Activity Score in 28 joints (DAS28) was found.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>In patients with RA, US detected a higher number of involved SC joints than with clinical assessment. Our results indicate that both gray\u2010scale and PD US findings were more prevalent in patients with RA than in healthy controls. US synovitis and synovial hyperperfusion correlated with the DAS28, suggesting that SC joints actively participate in the systemic inflammatory process of RA.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acr.21958","type":"journal-article","created":{"date-parts":[[2013,1,17]],"date-time":"2013-01-17T15:59:08Z","timestamp":1358438348000},"page":"1177-1182","source":"Crossref","is-referenced-by-count":35,"title":["Sternoclavicular Joint Involvement in Rheumatoid Arthritis: Clinical and Ultrasound Findings of a Neglected Joint"],"prefix":"10.1002","volume":"65","author":[{"given":"Pedro","family":"Rodr\u00edguez\u2010Henr\u00edquez","sequence":"first","affiliation":[{"name":"Hospital General \u201cDr. Manuel Gea Gonz\u00e1lez,\u201d Col. 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