{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,5]],"date-time":"2026-11-05T00:04:40Z","timestamp":1793837080027,"version":"4.6.1"},"reference-count":46,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,2,26]],"date-time":"2022-02-26T00:00:00Z","timestamp":1645833600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2022,2,26]],"date-time":"2022-02-26T00:00:00Z","timestamp":1645833600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2022,2,26]],"date-time":"2022-02-26T00:00:00Z","timestamp":1645833600000},"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":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The increasing incidence of knee injuries among children is well known by sports physicians. Papers dealing with this topic have often collected patient\u2010reported outcomes measures (PROMs) in a retrospective manner; this limitation could lead to a misinterpretation of the results, because pediatric patients might not remember their preoperative conditions adequately. This study aims to evaluate the reliability and the reproducibility of the IKDC pediatric score when administered retrospectively at a 12\u2010month follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>From September 2018 and June 2019, all patients aged 7\u201318 scheduled for surgery due to different knee pathologies in a single center were considered eligible. Parents were contacted by phone for consent. An open\u2010source platform was implemented to collect the responses: two surveys were created (Q1, Q2). They included general information and the Pedi\u2010IKDC score. Q1 was completed prospectively, while Q2 was completed 12\u00a0months after surgery. The two questionnaires were identical, and patients were carefully advised to complete Q2 recalling their health status before surgery. ICC and the concordance correlation coefficient (\u03c1<jats:sub>c<\/jats:sub>) were used to assess the reproducibility between the prospective and recalled scores.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Sixty\u2010six patients responded to Q1 and Q2, and the mean age was 12.9\u2009\u00b1\u20092.2 years at Q1 and 14.1\u2009\u00b1\u20092.2 years at Q2. The mean time between Q1 and Q2 was 14.1\u2009\u00b1\u20092.1\u00a0months. Between prospective\u2010IKDC and recall\u2010IKDC, the ICC coefficient was \"<jats:italic>poor<\/jats:italic>\u201d at 0.32 (CI 0.09 to 0.5) and the <jats:italic>\u03c1<\/jats:italic><jats:sub>c<\/jats:sub> was \u201c<jats:italic>poor<\/jats:italic>\u201d at 0.4 (CI 0.29 to 0.51). Mean prospective\u2010IKDC was 76.8\u2009\u00b1\u200923.52\u00a0mean recalled\u2010IKDC was 60.4\u2009\u00b1\u200911.5 (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.0001), while mean difference was \u201016.3\u2009\u00b1\u20092.09.<\/jats:p><jats:p>Simple linear regression models showed that \u0394\u2010IKDC is independently associated with age at Q1 (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.2676; <jats:italic>P<\/jats:italic>0.0001) \u2009and prospective\u2010IKDC (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.653; <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.0001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Retrospective collection of the Pedi\u2010IKDC score is not reliable and has high recall bias. This should be avoided in children with knee conditions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-022-06922-7","type":"journal-article","created":{"date-parts":[[2022,2,26]],"date-time":"2022-02-26T06:02:25Z","timestamp":1645855345000},"page":"3361-3366","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["High recall bias in retrospective assessment of the pediatric International Knee Documentation Committee Questionnaire (Pedi\u2010IKDC) in children with knee pathologies"],"prefix":"10.1002","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2351-8836","authenticated-orcid":false,"given":"Luca","family":"Macchiarola","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Clinica Ortopedica E Traumatologica II IRCCS Istituto Ortopedico Rizzoli Via Pupilli 1 40136 Bologna BO Italy"},{"name":"<!--<label>2<\/label>--> Dipartimento Di Medicina Clinica E Sperimentale Universit\u00e0 Degli Studi Di Foggia Foggia FG Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Massimo","family":"Pirone","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinica Ortopedica E Traumatologica II IRCCS Istituto Ortopedico Rizzoli Via Pupilli 1 40136 Bologna BO Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Grassi","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinica Ortopedica E Traumatologica II IRCCS Istituto Ortopedico Rizzoli Via Pupilli 1 40136 Bologna BO Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicola","family":"Pizza","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinica Ortopedica E Traumatologica II IRCCS Istituto Ortopedico Rizzoli Via Pupilli 1 40136 Bologna BO Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanni","family":"Trisolino","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> U.O. Ortopedia Pediatrica, IRCCS Istituto Ortopedico Rizzoli Via Pupilli 1 40136 Bologna BO Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Stilli","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> U.O. 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