The Mason classification separates radial head fractures based on the location of the fracture and the amount of comminution and displacement involved (Table 1); Mason described a Type 1 fracture as one that either had a fissure (nondisplaced) or a peripheral fracture of the rim, a Type 2 fracture as a marginal sector fracture with displacement, and a Type 3 fracture as a comminuted, displaced fracture involving the entire radial head [9]. By grouping radial head fractures this way, Mason sought to have the classification help guide treatment. Type 1 fractures were immobilized in a splint for an average of 16 days followed by active ROM; Type 3 fractures were treated with excision of the radial head. Type 2 fractures were treated either nonoperatively or with excision of the radial head. Type 2 injuries treated nonoperatively included depressed, but not tilted, fractures less than ¼ of the radial head or fractures greater than ¼ of the articular surface that were determined not to interfere with movement of the joint [9]. Treatment of radial head fractures remains similar today and continues to be based primarily on the Mason classification