{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T16:07:48Z","timestamp":1790957268441,"version":"4.1.0"},"reference-count":37,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T00:00:00Z","timestamp":1590969600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T00:00:00Z","timestamp":1590969600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,6,1]],"date-time":"2020-06-01T00:00:00Z","timestamp":1590969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/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":[[2021,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>External rotation of femoral component in total knee arthroplasty (TKA) with reference to the posterior condyles is recommended in mechanical alignment (MA) to ensure optimum patella tracking. In kinematic knee alignment (KA) technique, femoral component is more internally rotated as the femoral resection is based on flexion\u2013extension axis. This study aims to investigate the clinical and radiological outcomes of the patellofemoral joint in patients who underwent TKA using KA versus mechanical alignment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A review of prospectively collected registry data of 378 consecutive cruciate retaining primary TKAs (P.F.C.\n                      <jats:sup>\u00ae<\/jats:sup>\n                      Total Knee System, DePuy Synthes, Massachusetts, United States) was performed. Propensity scoring was performed matching patients who received KA TKA (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200993) to MA TKA (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200993). Oxford Knee Score (OKS), Knee Society Score (KSS), Short\u2010Form 36 (SF\u201036), range of motion as well as radiographs assessing patella tilt were compared at 6\u00a0months and 2 years after surgery. All patients received the same implant and had their patella resurfaced.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      OKS, KSS, physical component of SF\u201036 and satisfaction rates were comparable at both 6\u00a0months and 2 years after surgery. There was moderate association between preoperative and postoperative patella tilt in KA TKA (Cramer\u2019s\n                      <jats:italic>V<\/jats:italic>\n                      \u2009=\u20090.260,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.05). Postoperatively, KA group had a greater number of patients with lateral patella tilt compared to the mechanical group (12 [12.9%] vs 1 [1.1%],\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001). Patella tilts, however, resolved two years after surgery.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The relative internal rotation of the femoral component in KA TKA results in greater incidence of lateral patella tilt postoperatively. Nevertheless, patella tilt resolution was noted at 2 years.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of evidence<\/jats:title>\n                    <jats:p>Level III Evidence\u2014Retrospective Cohort Study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00167-020-06081-7","type":"journal-article","created":{"date-parts":[[2020,6,2]],"date-time":"2020-06-02T12:03:52Z","timestamp":1591099432000},"page":"1059-1066","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":56,"title":["Kinematic aligned femoral rotation leads to greater patella tilt but similar clinical outcomes when compared to traditional femoral component rotation in total knee arthroplasty. A propensity score matched study"],"prefix":"10.1002","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4777-675X","authenticated-orcid":false,"given":"Don Thong Siang","family":"Koh","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Singapore General Hospital Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yew Lok","family":"Woo","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Singapore General Hospital Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andy Khye Soon","family":"Yew","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Singapore General Hospital Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seng\u2010Jin","family":"Yeo","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Singapore General Hospital Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,6]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.16.01587"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623\u2010200708000\u201000020"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.89B12.19260"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999\u2010011\u20101936\u20105"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcot.2017.08.019"},{"key":"e_1_2_8_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199301000-00016"},{"key":"e_1_2_8_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2016.01.040"},{"key":"e_1_2_8_9_2","doi-asserted-by":"publisher","DOI":"10.1177\/001316446002000104"},{"key":"e_1_2_8_10_2","doi-asserted-by":"publisher","DOI":"10.1097\/00007632\u2010199603150\u201000017"},{"key":"e_1_2_8_11_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.80B1.0800063"},{"key":"e_1_2_8_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010014\u20102971\u2010z"},{"key":"e_1_2_8_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2018.08.009"},{"key":"e_1_2_8_14_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-198811000-00009"},{"key":"e_1_2_8_15_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623\u2010200207000\u201000006"},{"key":"e_1_2_8_16_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010019\u201005506\u20102"},{"key":"e_1_2_8_17_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010019\u201005509\u2010z"},{"key":"e_1_2_8_18_2","doi-asserted-by":"publisher","DOI":"10.3928\/01477447\u201020190424\u201002"},{"key":"e_1_2_8_19_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999\u2010009\u20100984\u20106"},{"key":"e_1_2_8_20_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11999\u2010012\u20102613\u2010z"},{"key":"e_1_2_8_21_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010018\u20105284\u20109"},{"key":"e_1_2_8_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0749\u20108063(05)80366\u20104"},{"key":"e_1_2_8_23_2","doi-asserted-by":"publisher","DOI":"10.2307\/2529310"},{"key":"e_1_2_8_24_2","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1097\/00003086-197910000-00004","article-title":"The 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October 2019","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"22 May 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"1 June 2020","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"Authors Don Thong Siang Koh, Yew Lok Woo, Andy Khye Soon Yew and Seng-Jin Yeo declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"\u00a0This study was approved by the institution\u2019s ethics committee (SingHealth CIRB: 2015\/2632) and carried out in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}