Case Report
A Case of Spontaneous Osteonecrosis of the Knee with Early and Simultaneous Involvement of the Medial Femoral Condyle and Medial Tibial Plateau
Figure 1
Plain initial (a) frontal and (b) lateral radiographs, showing slight subchondral bone sclerosis on the tibial medial condyle, but no evidence of radiolucent lesions or joint space narrowing. (c) A frontal radiograph and (d) its enlarged view, taken 3 months after the first evaluation, showing a radiolucent oval shadow in the subchondral areas of the weight-bearing portions of both the MFC and MTP, surrounded by a sclerotic halo (arrow).
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