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Marrow edema in medial patellar facet and in the lateral femoral condyle reflecting transient lateral patellar dislocation; the patella is in joint. There is a tear of the MPFL with moderate joint effusion. Patella cartilage is intact. The trochlear sulcus angle is 156° with flattened trochlear groove. Type A trochlear dysplasia (shallow trochlear groove). Patellar tendon and quadriceps attachment are intact. Insall salvati ratio is 0.79.
Marrow edema is seen in the lateral femoral condyle. Focal cortical defect is seen in the tibial plateau. Type II signal intensity changes seen in the medial meniscus.