Evaluate for ACL and/or medial meniscus tear. Lachman 2b, medial joint line tenderness, possible right. Injury 7/12/2015. MENISCI: There is multidirectional tearing of the posterior horn of the medial meniscus, with longitudinal component extending to the anterior horn and flipped bucket-handle fragment seen within the intercondylar notch. The lateral meniscus demonstrates normal morphology and signal characteristics without evidence of discrete tear.ARTICULAR CARTILAGE AND BONE: The articular cartilage in the medial, lateral, and patellofemoral compartments appears intact. There is patchy increased marrow signal in the distal femoral diaphysis and proximal tibial metaphysis, which may reflect red marrow changes. In addition, however, there are more focal areas of bone marrow edema in the anterior lateral femoral condyle and anterior tibial plateau, suggestive of contusions.LIGAMENTS: There is increased signal and thickening of the ACL with some fibers remaining intact, suggesting partial tear. There is increased fluid signal surrounding the medial collateral ligament, which may represent MCL sprain in the setting of acute trauma, or otherwise may simply reflect medial compartment pathology.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
Complex tearing of the posterior horn of the medial meniscus, including flipped bucket-handle fragment, partial ACL tear, and other findings as above.