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There is marrow oedema within the anterolateral aspect of the lateral femoral condyle, and medial patellar facet. This pattern of bone contusion is consistent with a transient lateral patellar dislocation injury. There remains minor lateral subluxation of the patella.
There are 2 fracture fragments adjacent to the lateral femoral condyle, which measure the 12 x 5mm and 19 x 4mm. The more superior fracture fragments is horizontally flipped. There are also 2 osteochondral fracture fragments adjacent to the medial patellar facet, which measure 5 x 10mm and 4 x 7mm.
There is associated high-grade partial thickness tear of medial patellofemoral ligament at its patellar insertion. There are some intact residual fibres noted. No patella alta. No clear evidence of trochlea dysplasia. There is high signal and thickening of the patella tendon insertion on the tibial tuberosity.
There is associated bony spurring of the tibial tuberosity. The medial meniscus and MCL are intact. The lateral meniscus, iliotibial band, fibular collateral ligament, biceps femoris tendon and popliteus tendon are intact. Moderate knee joint effusion.