{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T17:25:30Z","timestamp":1762017930412,"version":"build-2065373602"},"reference-count":45,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2016,4,29]],"date-time":"2016-04-29T00:00:00Z","timestamp":1461888000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2016,4,29]],"date-time":"2016-04-29T00:00:00Z","timestamp":1461888000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2016,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>There are multiple factors affecting maximal knee flexion (MKF) after total knee arthroplasty (TKA). The aim of the study was to investigate whether patient\u2010specific factors (PSF) and surgically modifiable factors (SMF), measured by means of a computer\u2010assisted navigation system, can predict the MKF after TKA.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data from 99 patients collected during a randomized clinical trial were used for this secondary data analysis. The MKF of the patients was measured preoperatively and 1\u2010year post\u2010surgery. Multiple regression analyses were performed to investigate which combination of variables would be the best to predict the 1\u2010year MKF.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>When considering SMF alone, the combination of three factors significantly predicted the 1\u2010year MKF (<jats:italic>p<\/jats:italic> = 0.001), explaining 22 % of its variation. When considering only PSF, the combination of pre\u2010op MKF and BMI significantly predicted the 1\u2010year MKF (<jats:italic>p<\/jats:italic> &lt; 0.001), explaining 23 % of its variation. When considering both groups of potential predictors simultaneously, the combination of five SMF with two PSF significantly predicted the 1\u2010year MKF (<jats:italic>p<\/jats:italic> = 0.001), explaining 32 % of its variation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Computer navigation variables alone could explain 22 % of the variance in the 1\u2010year MKF. The larger proportion (32 %) of the 1\u2010year MKF variation could be explained with a combination of SMF and PSF. The results of studies in this area could be used to identify patients at risk of poor outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Level II, Prognostic study.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-016-4134-x","type":"journal-article","created":{"date-parts":[[2016,4,29]],"date-time":"2016-04-29T06:03:06Z","timestamp":1461909786000},"page":"3457-3465","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Patient\u2010specific and intra\u2010operatively modifiable factors assessed by computer navigation predict maximal knee flexion one year after TKA"],"prefix":"10.1002","volume":"24","author":[{"given":"Frank","family":"Lampe","sequence":"first","affiliation":[{"name":"Research Center of the Orthopedic and Joint Replacement Department Schoen Klinik Hamburg Eilbek Dehnhaide 120 22081 Hamburg Germany"},{"name":"Faculty of Life Sciences Hamburg University of 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