Open Reduction and Internal Fixation of a Type IV Capitellum Fracture Through a Transolecranon Tunnel: A Case Report.

With type IV capitellum fractures, the olecranon often obstructs the screw trajectory necessary for anterior-to-posterior fixation of trochlear fragments. Drilling a transolecranon tunnel through the proximal olecranon with the elbow flexed creates a viable pathway for screw placement from a more medial starting point than what is possible with traditional techniques.