{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,4]],"date-time":"2026-11-04T15:03:01Z","timestamp":1793804581899,"version":"4.6.1"},"reference-count":32,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,4,27]],"date-time":"2020-04-27T00:00:00Z","timestamp":1587945600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,4,27]],"date-time":"2020-04-27T00:00:00Z","timestamp":1587945600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,4,27]],"date-time":"2020-04-27T00:00:00Z","timestamp":1587945600000},"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":[[2021,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>Defining a Minimal Clinically Important Difference (MCID) value for Patient\u2010Reported Outcome Measures (PROMs) is crucial for determining the effectiveness of a procedure and calculating the sample size for trial planning. The purpose of this study was to determine the MCID of several PROMs (Knee injury and Osteoarthritis Outcome Score (KOOS), Knee Society Score (KSS) and the SF\u201012) in patients who underwent medial opening\u2010wedge High\u2010Tibial Osteotomy (owHTO) with Patient\u2010Specific Cutting Guides (PSCGs), using anchor\u2010based methods.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients undergoing isolated medial owHTO with PSCGs between January 2013 and January 2017 were enrolled in this single\u2010center, prospective, observational study. Three outcome scores were collected pre\u2010operatively and at the 2 years follow\u2010up evaluation: KOOS, KSS and SF\u201012. The MCIDs were calculated using anchor\u2010based method: at 2 years postoperatively: \u201cCompared with before surgery, how would you rate operated joint now?\u201d The responses were recorded using a five\u2010point scale. Patients who answered \u201cabout the same\u201d or \u201csomewhat worse\u201d were classified into the no change group, while those who answered \u201csomewhat better\u201d were classified into the minimal change group. A receiver operating characteristic (ROC) curve was used to define the cutoff point that best discriminated between the minimal change and no change groups for each PROMs<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>196 patients were included, 75 (somewhat better) and 24 patients (about the same and somewhat worse) were, respectively, assigned to the \u201cno change\u201d and \u201cminimal change\u201d groups. There was no significant difference between the two groups in terms of baseline characteristics and postoperative complications. At 24\u00a0months follow\u2010up all the PROMs (KOOS, KSS and SF\u201012) were significantly better for the \u201cminimal change\u201d group compared to the \u201cno change\u201d group. MCID was 15.4 for KOOS pain, 15.1 for KOOS symptoms, 17 for KOOS ADL, 11.2 for KOOS sports\/recreation, 16.5 for KOOS QQL, 3 for KSS symptoms, 5.6 for KSS activity, 7.2 for SF\u201012\u00a0physical component and 6.3 for PCS mental component.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This study determined the MCIDs of common used PROMs in patients undergoing owHTO.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of evidence<\/jats:title>\n                    <jats:p>Prospective Cohort Study, Level II<\/jats:p>\n                  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February 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"21 April 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"27 April 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":"CP, CJ and RK have nothing to disclose. MO and KK are educational consultant for Stryker, arthrex and newclip. NP and CS is educational consultant for Zimmer\/Biomet and Smith & Nephew.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The local ethics committee approved our study protocol prior to investigation.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}