{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T04:56:10Z","timestamp":1789102570348,"version":"build-2803163510"},"reference-count":40,"publisher":"Springer Science and Business Media LLC","issue":"3","license":[{"start":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T00:00:00Z","timestamp":1673827200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T00:00:00Z","timestamp":1673827200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["International Orthopaedics (SICOT)"],"published-print":{"date-parts":[[2023,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>\nThe purpose was to investigate the effect of different degrees of valgus deformity correction on patellar position and clinical outcome in patients with valgus knees after total knee arthroplasty (TKA).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>We retrospectively analyzed and followed 118 patients with valgus knees. Based on the post-operative hip\u2013knee\u2013ankle (HKA), patients were divided into three groups: neutral (\u00b13\u00b0), mild (3\u20136\u00b0), and severe (&gt;\u00a06\u00b0). Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), range of motion (ROM), and Knee Society Score (KSS) were used to evaluate post-operative clinical efficacy. Also, the patellar tilt angle (<jats:italic>\u03b5<\/jats:italic>-angle), congruence angle (<jats:italic>\u03b8<\/jats:italic>-angle), and Insall\u2013Salvati index (ISI) were used to represent the patellar position. Post-operative observation indicators included HKA, angle of the femur (<jats:italic>\u03b1<\/jats:italic>-angle), tibial angle (<jats:italic>\u03b2<\/jats:italic>-angle), femoral component flexion angle (<jats:italic>\u03b3<\/jats:italic>-angle), and tibial component posterior slope angle (<jats:italic>\u03b4<\/jats:italic>-angle).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>All patients showed significant improvements in HKA, ROM, WOMAC, and KSS after operation (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). Regarding patellar position, the ISI values decreased to varying degrees (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.05). The patellar tilt angle was significantly increased in the severe valgus group compared to that in the mild valgus and neutral groups (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). Univariate analysis showed that the degree of post-operative residual valgus was significantly affected by WOMAC, KSS, <jats:italic>\u03b1<\/jats:italic>-, <jats:italic>\u03b5<\/jats:italic>-, and <jats:italic>\u03b8<\/jats:italic>-angles.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Minor valgus undercorrection did not affect the short-term outcome after TKA; however, when the residual valgus angle was &gt;\u00a06\u00b0, the post-operative scores were significantly reduced. Inadequate valgus correction does not result in significant changes in patellar height but may increase the risk of poor patellar tracking.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00264-023-05689-x","type":"journal-article","created":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T10:02:43Z","timestamp":1673863363000},"page":"735-743","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Effect of total knee arthroplasty for valgus knee correction on clinical outcome and patellar position"],"prefix":"10.1007","volume":"47","author":[{"given":"Liang","family":"Zhou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuening","family":"Dai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhongyuan","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Kong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8705-7760","authenticated-orcid":false,"given":"Guoqing","family":"Duan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuanmin","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,1,16]]},"reference":[{"issue":"3","key":"5689_CR1","doi-asserted-by":"publisher","first-page":"135","DOI":"10.5694\/mja2.12109","volume":"210","author":"S Adie","year":"2019","unstructured":"Adie S, Harris I, Chuan A, Lewis P, Naylor JM (2019) Selecting and optimising patients for total knee arthroplasty. 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The imaging and other data used in this study were approved by the Ethics Approval Committee of the Affiliated Hospital of Jining Medical College (approval number: 2022C226).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Consent was obtained from all participants involved in the study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"The authors affirm that human research participants provided informed consent for the publication of the images in Figs.  and .","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to publish"}},{"value":"The authors declare no conflict of interest.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}