{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T15:28:30Z","timestamp":1784734110137,"version":"3.55.0"},"reference-count":35,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,4,11]],"date-time":"2021-04-11T00:00:00Z","timestamp":1618099200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2021,4,11]],"date-time":"2021-04-11T00:00:00Z","timestamp":1618099200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2021,4,11]],"date-time":"2021-04-11T00:00:00Z","timestamp":1618099200000},"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":[[2022,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To determine cutoff values for the Knee Society Scores (KSS) indicative of a categorical scale of medium\u2010term outcomes.\n<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>One hundred and fifty\u2010five patients who underwent primary cruciate\u2010retaining TKA with a patellar button for osteoarthritis at a single\u2010centre were assessed prospectively by the KSS and short\u2010form Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) simultaneously at the 3\u2010year follow\u2010up. A validated categorization of the WOMAC score was used as a standard. The area under the curve (AUC) of receiver\u2010operating characteristic (ROC) was used to assess the discriminative analysis accuracy of the, and the Youden index estimated the optimal cutoff point.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>For the KSS\u2010knee score, the cutoff for an excellent outcome was 90.3 (AUC 0.75, 95% CI 0.71\u20130.78), 76.6 (AUC 76.6, 95% CI 0.70\u2013076) for good, 64.8 (AUC 0.76, 95% CI 0.72\u20130.79) for fair, and\u2009&lt;\u200964.8 (AUC 0.69, 95% CI 0.67\u20130.73) for poor. For the KSS\u2010function score, the cutoff values were 85.2 (AUC 0.71, 95% CI 0.69\u20130.75), 73.1 (AUC 0.72, 95% CI, 0.70\u20130.76), 55.7 (AUC 0.70, 95% CI 0.71\u20130.74), and\u2009&lt;\u200955.7 (AUC 0.68, 95% CI 0.66\u20130.72), respectively.\n<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A KSS\u2010knee score\u2009\u2265\u2009of 90 was considered an excellent outcome, 77 good, 65 fair, and\u2009&lt;\u200965 poor. For the KSS\u2010function, those values are 85, 73, 56 and\u2009&lt;\u200956, respectively. The treatment outcome\u2019s judgement may be clearer for the surgeon concerning a particular patient when using cutoff values for the scoring system employed, such as those determined in the present study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>II.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-021-06563-2","type":"journal-article","created":{"date-parts":[[2021,4,11]],"date-time":"2021-04-11T07:02:37Z","timestamp":1618124557000},"page":"1266-1272","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["A validated outcome categorization of the knee society score for total knee arthroplasty"],"prefix":"10.1002","volume":"30","author":[{"given":"Francisco A.","family":"Miralles\u2010Mu\u00f1oz","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Santiago","family":"Gonzalez\u2010Parre\u00f1o","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Martinez\u2010Mendez","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Blanca","family":"Gonzalez\u2010Navarro","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matias","family":"Ruiz\u2010Lozano","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4798-2702","authenticated-orcid":false,"given":"Alejandro","family":"Lizaur\u2010Utrilla","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery Elda University Hospital Ctra Elda\u2010Sax s\/n 03600 Elda Alicante Spain"},{"name":"<!--<label>2<\/label>--> Department of Traumatology and Orthopaedics, Faculty of Medicine Miguel Hernandez University N\u2010332 km 87 s\/n 03550 San Juan de Alicante Alicante 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February 2021","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"30 March 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 April 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"All the authors declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The present study was approved by the Institutional Review Board of the Elda University Hospital (ID number: PI2015-131), and informed consent was required.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}