CASE REPORTS: unusual lateral clavicle fracture dislocation: case reports and museum specimens.

We present two clinical cases and four museum specimens of a type of lateral clavicle fracture dislocation that has not been detailed in any of the commonly accepted classification systems. With this injury, the major clavicular element is displaced downward and backward into the supraspinatus outlet and may cause symptomatic impingement. A method for surgical correction is described.