Fig. 2.

This is a computer-aided design model of a computer-generated custom jig applied to the three-dimensionally reconstructed image of a cadaveric femur. The three holes depicted in the jig model allow for the introduction of Steinmann pins to secure the jig in place (for illustration, a pin is depicted in one of the three holes). The three slots built into the jig are designed to accept and capture a 0.89-mm-thick saw blade controlled by the surgeon. The placement and orientation of the slots are designed to precisely correspond to the desired resection plan as defined in the preoperative plan.