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Most authors recognize the fundamental role of trochlear dysplasia in the genesis of patellar dislocation, and some strongly defend correcting the abnormality, yet others find it too dangerous or unnecessary. Misunderstanding or undervaluation of trochlear dysplasia leads to inappropriate or failed patellofemoral (PF) surgery, the iatrogenic complications of which are well known. Many surgeons miss a key aspect of trochlear dysplasia: the overhang or the prominence of the trochlea relative to the anterior femoral cortex, characterized by a supra\u2010trochlear spur. Trochleoplasty should not be performed as a secondary or revision procedure, but as a primary procedure with clear indications, and the key to improved outcomes is to ensure the right indication for each patient, which can only be determined by understanding the extent of dysplasia in both the axial and sagittal planes.<\/jats:p>","DOI":"10.1016\/j.arthro.2020.05.050","type":"journal-article","created":{"date-parts":[[2020,7,31]],"date-time":"2020-07-31T03:02:31Z","timestamp":1596164551000},"page":"2246-2248","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":14,"title":["<i>Editorial Commentary:<\/i>\n                    Trochleoplasty: Is It Really That Fearsome and Dangerous a Technique?"],"prefix":"10.1002","volume":"36","author":[{"given":"David H.","family":"Dejour","sequence":"first","affiliation":[{"name":"Lyon France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,8,1]]},"reference":[{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2020.04.017"},{"key":"e_1_2_2_3_2","first-page":"278","volume-title":"The lectures of Boyer upon diseases of the bones, Volume 1","author":"Richerand A.","year":"1860"},{"key":"e_1_2_2_4_2","first-page":"11","article-title":"Dislocation of the patella (? congenital); operation; cure","volume":"1","author":"Drew D.","year":"1908","journal-title":"Proc R Soc Med"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.3109\/ort.1964.35.suppl-68.01"},{"key":"e_1_2_2_6_2","first-page":"5","article-title":"[Significance of the radiograph of the knee profile in the detection of patellar instability. 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