16-year-old with history of osteochondritis dissecans status post fixation. Postsurgical changes of an osteochondral lesion fixation involving a large irregularity, measuring approximately 1.5 cm, along the articular surface of the medial femoral condyle which remains in a similar position and alignment. A large knee joint effusion is noted.
Postsurgical changes of an osteochondral lesion fixation. 