A system and method are described herein for creating planar bone cuts on a bone to receive a total knee arthroplasty (TKA) femoral implant. The system includes a robotic surgical device, a computing system, and one or more contingent manual instruments. A surgical plan is generated having instructions for the robotic surgical device to create six or more planar bone cuts on the bone. The robotic surgical device executes the instructions, and in the event the robotic procedure is aborted before completing the six or more planar cuts, the one or more contingent manual instruments are used to create any remaining planar bone cuts. The one or more contingent manual instruments may include a plurality of uniquely arranged guide slots to assist a user in creating one or more remaining planar bone cuts.