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MRI of Osteochondral Defects of the Lateral Femoral Condyle: Incidence and Pattern of Injury After Transient Lateral Dislocation of the Patella

¹ National Musculoskeletal Imaging, 1930 N Commerce Pkwy., Suite 5, Weston, FL 33326.
² Uniformed Services University, Bethesda, MD
³ Department of Radiology, Miller School of Medicine, University of Miami, Miami, FL 33136.

OBJECTIVE. The typical bone bruise pattern involving the anterolateral femoral condyle and inferomedial patella after transient lateral dislocation of the patella is a well-described MRI finding. In our study, however, we sought to determine the incidence and location of lateral femoral condyle osteochondral injuries after transient lateral dislocation of the patella.

CONCLUSION. Osteochondral defects of the lateral femoral condyle are a common sequela after transient lateral patellar dislocation. A significant number of osteochondral injuries involve the midlateral weight-bearing portion of the lateral femoral condyle and are more posterior than would be expected after transient dislocation of the patella.

Keywords: cartilage • knee • MRI • musculoskeletal imaging • trauma

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