{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T16:57:04Z","timestamp":1791219424188,"version":"4.1.0"},"reference-count":18,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T00:00:00Z","timestamp":1791158400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T00:00:00Z","timestamp":1791158400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["arthroscopyjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy, Sports Medicine, and Rehabil."],"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate the agreement between a simple magnetic resonance imaging\u2010based measurement method for determining the patellar tendon\u2010to\u2010lateral trochlear ridge (PT\u2010LTR) distance using an external adhesive marker and a previously validated conventional measurement technique.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients diagnosed with patellofemoral instability before undergoing primary patellar stabilization surgery at a single institution between 2020 and 2024 were eligible for inclusion. PT\u2010LTR distances were measured in a blinded fashion by 2 musculoskeletal\u2010trained radiologists using the conventional technique and by an orthopaedic group using the simple technique. Interrater reliability between the musculoskeletal\u2010trained radiologists and between the orthopaedic groups was calculated using intraclass correlation coefficients (ICCs) and concordance correlation coefficients (CCCs) and subsequently intermethod reliability between the 2 groups. The measurements were plotted on concordance correlation graphs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>One hundred knees (38 right, 62 left) from 97 patients (37 men, 60 women; mean age 22\u2009\u00b1\u20099\u2009years) were included. The average distance for PT\u2010LTR measured by the radiologists using the conventional technique was 10.9\u2009\u00b1\u20097.5\u2009mm and by the orthopaedic group using the simple technique was 9.3\u2009\u00b1\u20096.8\u2009mm. Excellent interobserver agreement was noted for the radiologist group (ICC 0.941, 95% confidence interval [CI], 0.914\u20100.960; CCC 0.941, 95% CI, 0.915\u20100.959) and orthopaedic group (ICC 0.976, 95% CI, 0.964\u20100.985; CCC 0.976, 95% CI, 0.965\u20100.984). Excellent intermethod agreement was noted between the 2 techniques (ICC 0.903, 95% CI, 0.775\u20100.942; CCC 0.902, 95% CI, 0.861\u20100.932).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>There was excellent interobserver reliability for measuring PT\u2010LTR distance using both the conventional radiologist\u2010based technique and the external adhesive marker technique. Excellent intermethod agreement was also shown between the 2 techniques, with comparable mean measurements between groups; thus, the simple technique can be used as a reproducible alternative for PT\u2010LTR distance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III, retrospective comparative study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ars2.70109","type":"journal-article","created":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T16:09:09Z","timestamp":1791216549000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["External Adhesive Marker Technique Shows Excellent Reproducibility for Measuring Patellar Tendon\u2010to\u2010Lateral Trochlear Ridge Distance on Magnetic Resonance Imaging"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9205-3924","authenticated-orcid":false,"given":"Adam J.","family":"Tagliero","sequence":"first","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5720-2736","authenticated-orcid":false,"given":"Rakan R.","family":"Alshaibi","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6824-527X","authenticated-orcid":false,"given":"Gavin H.","family":"Ward","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5042-8457","authenticated-orcid":false,"given":"Jacob D.","family":"Mikula","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas G.","family":"Rhodes","sequence":"additional","affiliation":[{"name":"Department of Radiology Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4870-4237","authenticated-orcid":false,"given":"Michael D.","family":"Ringler","sequence":"additional","affiliation":[{"name":"Department of Radiology Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3058-7327","authenticated-orcid":false,"given":"Christopher L.","family":"Camp","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario","family":"Hevesi","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3248-8007","authenticated-orcid":false,"given":"Aaron J.","family":"Krych","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2176-3029","authenticated-orcid":false,"given":"Daniel B. F.","family":"Saris","sequence":"additional","affiliation":[{"name":"Division of Sports Medicine, Department of Orthopedic Surgery Mayo Clinic  Rochester Minnesota U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,5]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"crossref","first-page":"594","DOI":"10.52312\/jdrs.2024.57924","article-title":"Established practices and future insights into patellar instability surgery: A review","volume":"35","author":"Bahad\u0131r B","year":"2024","journal-title":"Joint Dis Relat Surg"},{"key":"e_1_2_7_3_1","doi-asserted-by":"crossref","first-page":"537","DOI":"10.1016\/j.arthro.2018.09.017","article-title":"The recurrent instability of the patella score: A statistically based model for prediction of long\u2010term recurrence risk after first\u2010time dislocation","volume":"35","author":"Hevesi 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