Medial elbow apophysitis (Little League elbow)

Both plain radiographs above are taken from the same adolescent baseball pitcher. The image on the right of the elbow in the boy's throwing arm shows signs of medial apophysitis, including widening of the physis and cortical irregularities (arrows). The other image on the left showing the elbow of the non throwing arm is normal (note this image was reversed to make comparison easier).