About this Scientific Article

The anteromedial facet (AMF) of the coronoid process plays a vital role in the stabilization of the ulnohumeral articulation. Fractures often lead to chronic instability, especially if missed. In this study, we report on a case of operative treatment for an O’Driscoll subtype 2 fracture of a 25-year-old patient who sustained the injury during a fall onto his outstretched hand. The AMF fragment was addressed via a Hotchkiss approach. After anatomic reduction, the fragment was fixed with a cannulated screw and a coronoid plate. The anterior bundle of the ulnar collateral ligament (UCL) was intact. The posterior bundle of the UCL and the lateral collateral ligament (LCL) were torn from their humeral origins and were reattached with suture anchors. This case report illustrates the typical varus posteromedial rotatory mechanism leading to anteromedial facet fractures with concomitant disruption of the LCL complex and the posterior bundle of the UCL. Addressing all aspects of this osteoligamentous injury can lead to good and reliable clinical outcomes.