Guided punch for talar augments

A method for performing surgery comprising:

• providing a device comprising:
• a strike cap comprising a strike surface, wherein the strike cap defines a first cavity therein;
• a punch coupled to a distal end of the strike cap, the punch comprising a distal cutting edge, and wherein the punch defines a second cavity therein in communication with the first cavity;
• a guide rod located within the first and second cavities and extending a predetermined distance beyond the distal cutting edge of the punch, wherein the strike cap and the punch are moveable relative to the guide rod, wherein the guide rod defines a proximal lip configured to interact with a proximal surface of the punch to maintain the guide rod at least partially within the first cavity;
• and
• a spring positioned proximally of the guide rod within the first cavity, wherein the spring is configured maintain the guide rod in a fixed position with respect to a bone when the strike cap and punch are moved relative to the guide rod in response to an impaction force;
• forming a pilot hole in a bone;
• inserting a guide rod of a guided punch into the pilot hole, wherein the guided punch comprises a strike cap, a punch coupled to a distal end of the strike cap and having a distal cutting edge, wherein the guide rod extends a predetermined distance beyond the distal cutting edge of the punch, and wherein the strike cap and the punch are moveable relative to the guide rod, wherein the guide rod defines a proximal lip configured to interact with a proximal surface of the punch to maintain the guide rod at least partially within the first cavity, and a spring positioned proximally of the guide rod within the first cavity;
• and
• reaming the pilot hole to a uniform hole using the guided punch, wherein the spring maintains the guide rod in a fixed position with respect to a bone when an impaction force is applied to the strike surface of the strike cap.