A system for fixing fractured bone portions of a distal humerus in position with respect to one another. In one embodiment, the system includes a plate portion, a projection portion, and a fixation post. The plate portion includes a surface for contacting a posterior portion of the distal humerus adjacent one of a lateral side and a medial side thereof. The projection portion extends outwardly from the plate portion and includes an aperture for receiving the fixation post. The fixation post includes at least one fenestration, and extends from adjacent the one of the lateral and medial sides of the distal humerus to adjacent the other of the lateral and medial sides of the distal humerus.