{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T16:48:26Z","timestamp":1788454106870,"version":"build-2803163510"},"reference-count":16,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T00:00:00Z","timestamp":1659139200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T00:00:00Z","timestamp":1659139200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T00:00:00Z","timestamp":1659139200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100008375","name":"University of Basel","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100008375","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100008375","name":"Universit\u00e4t Basel","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100008375","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The Knee Injury Osteoarthritis Outcome Score for children (KOOS\u2010Child) is a self\u2010administered, valid and reliable questionnaire for children and adolescents with knee disorders such as Osgood Schlatter disease, anterior knee pain, and patella dislocation. This study aimed to cross\u2010culturally adapt the German version of the KOOS\u2010Child questionnaire and test the reliability in two groups of children, one treated conservatively and the other surgically.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A forward\u2013backward translation of the original questionnaire into the German language was conducted. Children and adolescents between 10 and 18 years of age with knee disorders were included. Two groups were compared: sample one consisted of 24 participants with knee pain [20.8% boys; mean age\u2009=\u200913.4 (1.8) years treated conservatively. These participants completed the KOOS\u2010Child questionnaire twice within two weeks to assess test\u2013retest reliability. The second sample included 23 subjects (21.7% boys; mean age\u2009=\u200915.3 (1.9) years] treated surgically due to a knee disorder. They completed the questionnaire before surgery and six months postoperatively. Test\u2013retest reliability and internal consistency were assessed using Spearman\u2019s rank correlation and Cronbach\u2019s alpha.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All subscales showed a good to excellent internal consistency at both measurement points in both groups (conservatively treated group: <jats:italic>a<\/jats:italic>\u2009=\u20090.88\u20130.95; surgery group <jats:italic>a<\/jats:italic>\u2009=\u20090.80\u20130.91), with the exception of the subscale knee problems (conservatively treated: <jats:italic>a<\/jats:italic>\u2009=\u20090.60 and 0.52; surgery: <jats:italic>\u03b1<\/jats:italic>\u2009=\u20090.77 and 0.66). Test\u2013retest reliability was between <jats:italic>r<\/jats:italic>\u2009=\u20090.85 and 0.94.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The predominantly good to excellent internal consistency and the high test\u2013retest reliability justifies the use of the German adaptation of the KOOS\u2010Child questionnaire as a reliable multidimensional instrument for measuring health status and therapeutic effects in adolescents\u2019 knee disorders.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-022-07074-4","type":"journal-article","created":{"date-parts":[[2022,7,30]],"date-time":"2022-07-30T02:02:51Z","timestamp":1659146571000},"page":"1354-1360","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["The German version of the KOOS\u2010Child questionnaire (Knee injury and Osteoarthritis Outcome Score for children) shows a good to excellent internal consistency and a high test\u2013retest reliability in children with knee problems"],"prefix":"10.1002","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5698-6820","authenticated-orcid":false,"given":"Cornelia","family":"Neuhaus","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Therapy University Children\u2019s Hospital (UKBB), University of Basel Spitalstrasse 33 4056 Basel Switzerland"},{"name":"<!--<label>4<\/label>--> Department of Sport, Exercise and Health, Medical Faculty University of Basel Basel Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlo","family":"Camathias","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Praxis Zeppelin St. Gallen Switzerland"},{"name":"<!--<label>5<\/label>--> Medical Faculty University of Basel Basel Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcus","family":"Mumme","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> Department of Orthopaedics University Children\u2019s Hospital (UKBB), University of Basel Basel Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oliver","family":"Faude","sequence":"additional","affiliation":[{"name":"<!--<label>4<\/label>--> Department of Sport, Exercise and Health, Medical Faculty University of Basel Basel Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,7,30]]},"reference":[{"key":"e_1_2_10_2_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102018\u2010099060"},{"key":"e_1_2_10_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00007632\u2010200012150\u201000014"},{"key":"e_1_2_10_4_2","doi-asserted-by":"publisher","DOI":"10.17433\/978-3-17-025836-5"},{"key":"e_1_2_10_5_2","unstructured":"BolstadK OiestadBE TorsrudT CavanaghC HatcherD ClayPT MoksnesH GrindemH(2015)Translation and cross\u2010cultural adaptation of the Norwegian version of the Knee Injury and Osteoarthritis Outcome score for Children (KOOS\u2010Child 2.0).http:\/\/www.koos.nu\/kooschildnorwegian.pdf"},{"key":"e_1_2_10_6_2","doi-asserted-by":"publisher","DOI":"10.4324\/9780203771587"},{"key":"e_1_2_10_7_2","volume-title":"Pediatric orthopedics in practice","author":"Hefti F","year":"2007"},{"key":"e_1_2_10_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010012\u20102225\u2010x"},{"key":"e_1_2_10_9_2","doi-asserted-by":"publisher","DOI":"10.4414\/saez.2018.17187"},{"key":"e_1_2_10_10_2","doi-asserted-by":"crossref","unstructured":"IvanovYA YeltsinAG MininkovDS(2021)Validation and cultural adaptation of russian version of KOOS\u2010CHILD questionnaire.http:\/\/www.koos.nu\/russian.pdf","DOI":"10.17816\/vto60489"},{"key":"e_1_2_10_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010020\u201006237\u20105"},{"key":"e_1_2_10_12_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports\u20102013\u2010093164"},{"key":"e_1_2_10_13_2","unstructured":"\u00d6rtqvistM BrostromEW JanarvPM IversenMD(2013)A user\u2019s guide to: the knee injury and osteoarthritis outcome score for children KOOS\u2010child.http:\/\/www.koos.nu\/kooschildusersguide.pdf. Accessed 1 Jun 2021"},{"key":"e_1_2_10_14_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010018\u20105302\u2010y"},{"key":"e_1_2_10_15_2","doi-asserted-by":"publisher","DOI":"10.1186\/1477\u20107525\u20101\u201064"},{"key":"e_1_2_10_16_2","unstructured":"Saarinen ASE Syv\u00e4nenJ RepoJ PalonevaJ HeleniusI(2021)Validation and cultural adaptation of the Finnish version of the KOOS\u2010Child questionnaire.http:\/\/www.koos.nu\/;http:\/\/www.koos.nu\/index.html. 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