A radial head fracture is one of the three components of the 'terrible triad injury' of the elbow. What are the other two main components?
In addition to a radial head (or neck) fracture, the terrible triad injury of the elbow includes the dislocation of the elbow as well as a fracture of the coronoid process (of the proximal ulnar). Luckily the patient in this cases did not suffer these additional features.
There is a comminuted fracture of the anterior half of the radial head. The main radial fragment is compressed inwards approximately 1.7mm. No other fractures are demonstrated. No dislocation. Joint effusion present.