Osteochondritis dissecans: knee
Pain and swelling about six months in a basketball player
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RX right knee
Osteochondral defect of the inner surface of the medial femoral condyle, with sclerotic margins and free fragment but not dislocated.
Dissecans osteochondritis is a necrosis that affects only a small part, lenticular, the articular cartilage and the corresponding subchondral bone.
The bone is clearly demarcates the osteocartilagineo surrounding tissue to break away and become "free" in the 'articulation (called joint mice).
Dissecans osteochondritis occurs mainly in adolescence and is initially asymptomatic; as an adult, you have the first signs of pain and limitation of joint movement.