Abstract: Methods for anterior-to-posterior talus-calcaneus screw insertion through an ankle arthrodesis nail according to embodiments of the present invention include coupling a first jig to the nail, aligning a drill bit with a first aperture of the nail by inserting it through a second aperture in the first jig, drilling a first hole through a tibia aligned with the first aperture, fixing the nail to the tibia with a screw through the first hole into the first aperture, coupling a second jig to the first jig, aligning the drill bit with a third aperture in the nail by inserting the drill bit through a fourth aperture in the second jig, drilling a second hole through a talus and a calcaneus aligned with the third aperture; and fixing the nail to the talus and calcaneus by inserting a screw through the second hole into the third aperture in an anterior-to-posterior direction.

Abstract: A surgical instrument including at least one tibial phantom generally corresponding to at least certain features of the tibial implant. The tibial phantom includes a top surface adapted to move freely against the prepared bottom end of the tibia. At least one talus phantom generally corresponding to at least certain features of the talus implant is engaged with the prepared top surface of the talus. At least one phantom skid is located between the tibial phantom and the talus phantom. The phantom skid is engaged with the tibial phantom such that dynamic engagement between the phantom skid and the talus phantom through at least extension and flexion of the ankle joint positions the tibial phantom on the prepared bottom end of the tibia. The phantom skid can either be a part of the tibial phantom or a separate component.

Abstract: A surgical instrument including at least one tibial phantom generally corresponding to at least certain features of the tibial implant. The tibial phantom includes a top surface adapted to move freely against the prepared bottom end of the tibia. At least one talus phantom generally corresponding to at least certain features of the talus implant is engaged with the prepared top surface of the talus. At least one phantom skid is located between the tibial phantom and the talus phantom. The phantom skid is engaged with the tibial phantom such that dynamic engagement between the phantom skid and the talus phantom through at least extension and flexion of the ankle joint positions the tibial phantom on the prepared bottom end of the tibia. The phantom skid can either be a part of the tibial phantom or a separate component.