Presentation
Knee pain, swelling and locking following trauma
Patient Data
Age: 17 years old
Gender: Male
From the case:
Osteochondritis dissecans of the knee
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Two osteochondral fragments are seen, one of them is seen in situ and involve the posterolateral aspect of medial femoral condyle, the other one is displaced anteriorly and likely arise from the weight bearing area of the medial femoral condyle. Both of them are unstable segments.
PHMM contusion and large joint effusion
Case Discussion
Differential diagnoses include insufficiency and osteochondral fracture.