{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,9]],"date-time":"2026-11-09T08:09:24Z","timestamp":1794211764998,"version":"4.8.0"},"reference-count":52,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2011,2,17]],"date-time":"2011-02-17T00:00:00Z","timestamp":1297900800000},"content-version":"vor","delay-in-days":16,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003554","name":"Lundbeckfonden","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003554","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["PM&amp;R"],"published-print":{"date-parts":[[2011,2]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To (1) quantify changes in knee\u2010extension strength and functional\u2010performance at discharge after fast\u2010track total hip arthroplasty (THA) and (2) investigate whether these changes correlate to changes in thigh and knee circumference (ie, swelling) or pain.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>A prospective, descriptive, hypothesis\u2010generating study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>A special unit for fast\u2010track hip and knee arthroplasty operations at a university hospital.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>Twenty\u2010four patients (20 women and 4 men; ages 69 \u00b1 6.1 years) scheduled for primary unilateral THA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>All patients were evaluated before surgery and on the day of hospital discharge.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Outcome Measures<\/jats:title><jats:p>Knee\u2010extension strength, thigh and knee joint circumference, hip pain, and functional performance (Timed Up &amp; Go, 30\u2010Second Chair Stand, and 10\u2010Meter Walk tests).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All investigated variables changed significantly from before to after surgery, except for hip pain. The average loss in knee\u2010extension strength after surgery (32%, <jats:italic>P<\/jats:italic> = .01) did not correlate with increased thigh circumference (6%, <jats:italic>P<\/jats:italic> &lt; .01) or knee circumference (3%, <jats:italic>P<\/jats:italic> &lt; .01) or with reductions in functional performance: Timed Up &amp; Go test (114%, <jats:italic>P<\/jats:italic> = .01), 30\u2010Second Chair Stand test (36%, <jats:italic>P<\/jats:italic> = .01), and 10\u2010Meter Walk test (50%, <jats:italic>P<\/jats:italic> &lt; .01). Only the increase in knee circumference correlated significantly with reduced performance in the 10\u2010Meter Walk test time (R = \u22120.59, <jats:italic>P<\/jats:italic> &lt; .01), explaining 34% of the variance in the 10\u2010Meter Walk test. No correlations between changes in hip pain and functional performance or knee\u2010extension strength were found. Mean postoperative hospital stay was 2.1 days.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Knee\u2010extension strength is considerably reduced at discharge after THA, but the early strength reduction does not correlate with changes in thigh or knee circumferences. Because functional performance is also considerably reduced at discharge (unrelated to reduced knee\u2010extension strength), other mechanisms such as fear, avoidance of movement, or decreased hip\u2010muscle strength also may be involved.<\/jats:p><\/jats:sec>","DOI":"10.1016\/j.pmrj.2010.10.019","type":"journal-article","created":{"date-parts":[[2011,2,18]],"date-time":"2011-02-18T10:26:23Z","timestamp":1298024783000},"page":"117-124","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Thigh and Knee Circumference, Knee\u2010Extension Strength, and Functional Performance After Fast\u2010Track Total Hip Arthroplasty"],"prefix":"10.1002","volume":"3","author":[{"given":"Bente","family":"Holm","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morten Tange","family":"Kristensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henrik","family":"Husted","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henrik","family":"Kehlet","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Bandholm","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,2,17]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"crossref","first-page":"1942","DOI":"10.2106\/00004623-200211000-00006","article-title":"Effect of baseline functional status and pain on outcomes of total hip arthroplasty","volume":"84","author":"Holtzman J.","year":"2002","journal-title":"J Bone Joint Surg Am"},{"key":"e_1_2_7_3_2","author":"Kjaersgaard\u2010Andersen P.","year":"2006","journal-title":"Total hip arthroplasty. 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