{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T21:30:09Z","timestamp":1790890209825,"version":"4.1.0"},"reference-count":33,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T00:00:00Z","timestamp":1623801600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T00:00:00Z","timestamp":1623801600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T00:00:00Z","timestamp":1623801600000},"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>The purpose of this study was to determine the utilization and responsiveness of common patient\u2010reported outcomes (PROs) in patients undergoing surgery for patellar instability.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Using PRISMA guidelines, a systematic review of studies reporting outcomes following surgical intervention for patellar instability was conducted using Pubmed, Cochrane, OVID Medline, and Google Scholar. Subgroup analysis of articles reporting at least two PROs with baseline and follow\u2010up data were used to evaluate responsiveness of instruments using relative efficiency and effect size.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>From the search, 2,848 unique articles were found, of which 178 were included in final analysis (7,122 patients, mean age 22.6, 63.6% female). The most commonly used PRO was the Kujala score (79.2%), followed by the Lysholm (34.8%), and Tegner (30.9%). Seventy\u2010nine articles were eligible for subgroup analysis. The Kujala had a higher relative efficiency than ten of the 14\u00a0instruments to which it was compared but had lower relative efficiency compared to the IKDC and Lysholm scores. The Banff Patella Instability Instrument (BPII) and the Norwich score, condition\u2010specific tools, were unable to be fully assessed due to rarity of use and lack of comparisons.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The hypothesis that the Kujala score is the most commonly used PRO for patellar instability, although other instruments offer greater efficiency was supported by our results. The IKDC and Lysholm scores had similar effect sizes but higher relative efficiencies than the Kujala, thus suggesting better responsiveness. This analysis adds useful information for surgeons on the effectiveness of the most common PRO\u2019s for evaluating patellofemoral instability outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Level III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-021-06625-5","type":"journal-article","created":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T09:03:22Z","timestamp":1623834202000},"page":"1453-1460","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Patient\u2010reported outcome scores following patellar instability surgery\u2010high prevalence does not equal high responsiveness: a systematic review"],"prefix":"10.1002","volume":"30","author":[{"given":"Justin A.","family":"Magnuson","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Division of Sports Medicine, Department of Orthopaedic Surgery and Sports Medicine University of Kentucky 740 S. 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January 2021","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 May 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"16 June 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":"Dr. Stone: AANA\u2014committee member AOSSM\u2014committee member; Research Support Flexion therapeutics, Allosource; Unpaid consultant\u2014Smith & Nephew, Allosource; Grant from Arthrex; Education payments from Medwest Associates; Hospitality payments from Wright Medical Technology; Travel and Lodging Smith and Nephew. Dr. Liu, Education and Travel and Lodging from Smith & Nephew Inc., Education for Arthrex Travel and Lodging and Food and beverage for Exatech Inc. Dr. Jacobs, Consultant for Flexion Therapeutics HH, Research funding from Flexion Therapeutics and Smith & Nephew.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"Not Applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}