{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T04:02:37Z","timestamp":1791259357233,"version":"4.1.0"},"reference-count":45,"publisher":"Wiley","issue":"8","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":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"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.elsevier.com\/tdm\/userlicense\/1.0\/"},{"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.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/100008426","name":"DePuy Mitek","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100008426","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["arthroscopyjournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate outcome data of patients undergoing DeJour sulcus\u2010deepening trochleoplasty with medial patellofemoral ligament reconstruction (MPFLR) for high\u2010grade trochlear dysplasia at a single institution in the United States.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A total of 67 patients (76 knees) with severe trochlear dysplasia and recurrent patellar instability were prospectively enrolled and underwent DeJour sulcus\u2010deepening trochleoplasty with MPFLR from 2011 to 2019. Inclusion criteria included recurrent lateral patellar instability following failure of conservative treatment with radiographic evidence of severe trochlear dysplasia (DeJour types B or D). Patients with less than 2\u2010year follow\u2010up were excluded. Radiographic analysis, physical examination, clinical follow\u2010up, patient demographics, and patient\u2010reported outcome measures were obtained for all patients at each visit.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Forty patients (44 knees) had complete 2\u2010year or longer follow\u2010up and were included. The majority of patients were female (81.8%) with a mean age of 19.2 years (standard deviation [SD] 6.7; range 13.2\u201047.0). Follow\u2010up ranged from 2.0 years to 6.8 years (mean 3.6 years, SD 1.35). In total, 45.5% had failed previous surgery for patellar instability. Eight knees developed arthrofibrosis and the overall reoperation rate was 27.3%. No patients had fixation failure and no further surgery was required for instability. The mean preoperative International Knee Documentation Committee score of 50.8 improved to 79.1 (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001), and the mean preoperative Kujala score of 56.4 improved to 86.5 (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). Patients reported high satisfaction rates (mean 9.1 of 10). When applicable, 100% of patients returned to work, whereas 84.8% returned to sport. There was no significant radiographic progression of patellofemoral arthritis at a mean of 2.4 years after surgery (SD 1.7).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>DeJour sulcus\u2010deepening trochleoplasty combined with MPFLR and used with tibial tubercle osteotomy and lateral release is a reliable and effective treatment for recurrent patellar instability due to severe trochlear dysplasia, even in this group with many revisions of previous procedures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>IV, case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2020.04.017","type":"journal-article","created":{"date-parts":[[2020,4,27]],"date-time":"2020-04-27T21:36:58Z","timestamp":1588023418000},"page":"2237-2245","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":41,"title":["Sulcus Deepening Trochleoplasty and Medial Patellofemoral Ligament Reconstruction for Patellofemoral Instability: A 2\u2010Year Study"],"prefix":"10.1002","volume":"36","author":[{"given":"S. Evan","family":"Carstensen","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery University of Virginia Charlottesville Virginia U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott M.","family":"Feeley","sequence":"additional","affiliation":[{"name":"School of Medicine University of Virginia Charlottesville Virginia U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. Tyrrell","family":"Burrus","sequence":"additional","affiliation":[{"name":"Orthopedic Associates of Central Texas Austin Texas U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew","family":"Deasey","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Virginia Charlottesville Virginia U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeremy","family":"Rush","sequence":"additional","affiliation":[{"name":"Nemours Children\u2019s Specialty Care \u2013 Department of Orthopedics and Sports Medicine 807 Children\u2019s Way Jacksonville Florida U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David R.","family":"Diduch","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Virginia Charlottesville Virginia U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,4,27]]},"reference":[{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516663498"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-010-1329-4"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0035-1549017"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/2325967117750352"},{"key":"e_1_2_2_6_2","first-page":"1466","article-title":"Douleurs et instabilite rotulienne, essai de classification","volume":"56","author":"Dejour D.","year":"1998","journal-title":"Med Hyg"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-009-0933-8"},{"key":"e_1_2_2_8_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546511433028"},{"key":"e_1_2_2_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-013-2603-z"},{"key":"e_1_2_2_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-016-4365-x"},{"key":"e_1_2_2_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00064-015-0420-x"},{"key":"e_1_2_2_12_2","doi-asserted-by":"publisher","DOI":"10.5312\/wjo.v8.i12.935"},{"key":"e_1_2_2_13_2","first-page":"45","article-title":"Dysplasia of the femoral trochlea","volume":"76","author":"Dejour H.","year":"1990","journal-title":"Rev Chir Orthop Reparatrice Appar Mot"},{"key":"e_1_2_2_14_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546515597679"},{"key":"e_1_2_2_15_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.216.3.r00se38858"},{"key":"e_1_2_2_16_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF01552649"},{"key":"e_1_2_2_17_2","doi-asserted-by":"publisher","DOI":"10.1053\/ar.1999.v15.015084"},{"key":"e_1_2_2_18_2","doi-asserted-by":"publisher","DOI":"10.1177\/2325967116646085"},{"key":"e_1_2_2_19_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465010290051301"},{"key":"e_1_2_2_20_2","first-page":"317","article-title":"Patella infera. 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