This is a classic example of an elbow dislocation as seen on the MRI (images 1-4) and X-ray (image 5). While the elbow dislocation is quite conspicuous, what else should you make sure to notice?
Make sure you also make note of the medial apophyseal avulsion of the medial humeral epicondyle, as indicated by the arrows in images 1-3. For more case review, check out MRI Online.