Osteochondral lesion of the capitellum | Figure 1

CincyKidsRad

Cincinnati Children's Radiology

Osteochondral lesion of the capitellum

Lateral (image 1) and AP (image 2) radiographs of the elbow show an osteochondral lesion involving the capitellum (arrow). This is confirmed on T1-weighted coronal MR (image 3). The capitellum is the second most frequent site of osteochondral lesions following the medial femoral condyle. The lesion typically occurs in overhead throwing and non-throwing athletes such as pitchers, quarterbacks, volleyball and tennis players, and gymnasts.