Biomechanical testing to evaluate the cut-through resistance of intramedullary nails for the proximal humerus

The optimal screw length has a strong influence on the failure load. Choosing proximal screws that are too short, produces a negative impact on the cut-through resistance. The additional calcar screw of the MultiLoc PHN and the polyaxiality of the PolyAxNail showed a positive effect with regard to the failure load reached.