{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T14:45:17Z","timestamp":1777387517638,"version":"3.51.4"},"reference-count":13,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[1994,5,1]],"date-time":"1994-05-01T00:00:00Z","timestamp":767750400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[1994,5]]},"abstract":"<jats:p>Forty patients underwent 45 modified Elmslie-Trillat re alignment procedures (mean followup, 2 years) for re fractory patellar instability (34 knees) or painful patel lofemoral syndrome with malalignment (11 knees). The postoperative congruence angle (mean, +3.4\u00b0) was significantly improved compared with the preoperative value (mean, +21.5\u00b0). We considered the \"normal\" con gruence angle average as -8\u00b0 (range, -20\u00b0 to +4\u00b0). Overtime postoperatively, we detected no statistical dif ference in the congruence angle (5 months, 3.4\u00b0; 24 months, 6.3\u00b0). There were no patellar dislocations post operatively. Nine knees (20%) had some postoperative subluxation. Ninety-four percent of the patients without subluxation had congruence angles less than 15\u00b0, whereas 54% of patients with postoperative subluxation had postoperative congruence angles greater than 15\u00b0.<\/jats:p>\n                  <jats:p>The evidence in this study population indicates that the modified Elmslie-Trillat procedure can predictably improve the patellar congruence angle. Adequate cor rection may eliminate patellar dislocation. Correction of the congruence angle to less than +15\u00b0 will result in a decreased incidence of postoperative patellar instabil ity. Early full activity postoperatively did not affect the modified Elmslie-Trillat correction of the congruence angle being maintained over time.<\/jats:p>","DOI":"10.1177\/036354659402200304","type":"journal-article","created":{"date-parts":[[2007,6,21]],"date-time":"2007-06-21T20:46:52Z","timestamp":1182458812000},"page":"318-323","source":"Crossref","is-referenced-by-count":73,"title":["Use of a Modified Elmslie-Trillat Procedure to Improve Abnormal Patellar Congruence Angle"],"prefix":"10.1177","volume":"22","author":[{"given":"K. Donald","family":"Shelbourne","sequence":"first","affiliation":[{"name":"Methodist Sports Medicine Center, Indianapolis, Indiana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David A.","family":"Porter","sequence":"additional","affiliation":[{"name":"Methodist Sports Medicine Center, Indianapolis, Indiana"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Rozzi","sequence":"additional","affiliation":[{"name":"Methodist Sports Medicine Center, Indianapolis, Indiana"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1994,5,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"crossref","unstructured":"Aglietti P., Insall JH, Cerulli G.: Patellar pain and incongruence. Clin Orthop 122: 217-224, 1983","DOI":"10.1097\/00003086-198306000-00032"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1177\/036354658401200203"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1177\/036354658201000509"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-197658010-00002"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(87)80005-1"},{"key":"atypb6","doi-asserted-by":"crossref","unstructured":"Fulkerson J. , Schutzer S., Ramsby G., et al: Anteromedialization of the tibial tuberosity for patellofemoral malalignment. Clin Orthop 177: 176-181, 1983","DOI":"10.1097\/00003086-198307000-00027"},{"key":"atypb7","doi-asserted-by":"crossref","unstructured":"Grana W., O'Donoghue D.: Patellar-tendon transfer by the slot-block method for recurrent subluxation and dislocation of the patella. 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