{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T03:00:36Z","timestamp":1783479636840,"version":"3.55.0"},"reference-count":27,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2019,8,14]],"date-time":"2019-08-14T00:00:00Z","timestamp":1565740800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["PM&amp;R"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Ultrasound has become a useful instrument in evaluating musculoskeletal pathology. Recent studies suggest that ultrasound imaging of weight\u2010bearing menisci may enhance the assessment of knee pathology, such as osteoarthritis (OA) and meniscal injuries.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>The primary aim of this study was to determine the intrarater and interrater reliability of ultrasound measurements of medial meniscal extrusion (MME) after a brief training session.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Prospective reliability study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>Physical medicine and rehabilitation (PM&amp;R) department within a tertiary care institution.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>Forty\u2010five participants (29 female, 16 male) were recruited to serve as models, 24 of whom had healthy knees and 21 of whom had radiographically confirmed medial compartment knee OA. Three physician sonographers (1\u2009=\u2009experienced, 1\u2009=\u2009sports medicine fellow, 1\u2009=\u2009post\u2010graduate year [PGY]\u20104 PM&amp;R resident) were recruited to serve as operators.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods or Interventions<\/jats:title><jats:p>Operators received a brief training session on identifying and measuring MME. All operators measured bilateral MME in each model in the standing and supine positions on two separate days. Operators were blinded to all measurements.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Outcome Measurements<\/jats:title><jats:p>Primary outcomes were inter\u2010 and intrarater intraclass correlation coefficients (ICCs) of MME measurements among operators with different levels of ultrasound experience.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Supine MME intrarater reliability ICCs were 0.927, 0.885, and 0.780 for the experienced physician, sports medicine fellow, and PGY\u20104 operators, respectively. Standing MME intrarater reliability ICCs were 0.941, 0.902, and 0.824 for the experienced physician, sports medicine fellow, and PGY\u20104 operators, respectively. Interrater reliability ICCs were 0.896 and 0.842 for supine and standing measurements, respectively. There was a statistically significant increase in intrarater reliability with experience between the PGY\u20104 resident and experienced physician operators.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Operators with different levels of ultrasound experience demonstrated good MME measurement intra\u2010 and interrater reliabilities in both supine and standing positions.<\/jats:p><\/jats:sec>","DOI":"10.1002\/pmrj.12183","type":"journal-article","created":{"date-parts":[[2019,5,7]],"date-time":"2019-05-07T10:17:22Z","timestamp":1557224242000},"page":"26-35","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Ultrasound Assessment of Weight\u2010Bearing and Non\u2013Weight\u2010Bearing Meniscal Extrusion: A Reliability Study"],"prefix":"10.1002","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9355-9388","authenticated-orcid":false,"given":"Jacob H.","family":"Reisner","sequence":"first","affiliation":[{"name":"Physical Medicine and Rehabilitation, Department of Physical Medicine and Rehabilitation Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John M.","family":"Franco","sequence":"additional","affiliation":[{"name":"Physical Medicine and Rehabilitation, Department of Physical Medicine and Rehabilitation Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John H.","family":"Hollman","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam C.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Radiology Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob L.","family":"Sellon","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3635-3919","authenticated-orcid":false,"given":"Jonathan T.","family":"Finnoff","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation Mayo Clinic College of Medicine and Science  Rochester MN"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,8,14]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"crossref","first-page":"2269","DOI":"10.1007\/s12325-016-0417-3","article-title":"Important considerations when determining the cost\u2010effectiveness of Viscosupplements in the treatment of knee osteoarthritis: letter to the editor regarding Rosen, J., Sancheti, P., Fierlinger, A. et al. 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