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Axial images reveal that the trochlear surface of femoral condyle appears dyplastic with short sulcal depth, decreased medial facet length, lateralised patella, edematous medial retinaculum, scarring at medial patellofemoral ligament and articular cartilaginous edema & subchondral cyst at lateral undersurface of patella : findings consistent with femoral trochlear dysplasia with chronic lateral patellar instability
Coronal images show cortical breech at tibial eminence suggesting a depressed fracture extending in a posteromedial to anterolateral plane. Surprisingly no marrow edema is seen indicating a chronic pathology.
The ACL is mildly thickened and anteriorly bowed relative to the expected normal taut, Blumensaats parallel morphology, hence suggstive of lowgrade partial thickness tear involving predominantly the posterolateral fibres.
The quadriceps and infrapatellar tendon show fibrillar morphology with insertional edema. Some interstitial edema is seen at the meniscofemoral deep attachment of MCL with minimal fluid in the lateral recess of the suprapatellar pouch.