An Unusual Bryan and Morrey Type IV Capitellum Fracture with Posterolateral Rotational Instability: A Case Report.

Introduction: Better understanding of disruption of bony and ligamentous constraints of the radiocapitellar joint in complex capitellum fracture is essential for optimizing the surgical care and outcome. This report highlights the need for modification in surgical fixation technique to address an unusual variant of this rare injury.

Case Report: We report a three-part capitellum fracture pattern with a Y-shaped split of distal humerus with a sheared anterior fragment and a single, large, non-articular posterolateral fragment in a young male patient.