Preparing a tibia for receiving tibial implant component of a replacement ankle

A surgical instrument kit comprising:

• a power driver adapter configured for cutting into an intramedullary canal of a tibia, the power driver adapter comprising:
• an elongated body having a driving end, a cutting tool bit receiving end, and a longitudinal axis;
• wherein the driving end having a drive shaft coaxially located with the longitudinal axis and configured to mate with a power delivering unit that rotates the drive shaft coaxially about the longitudinal axis;
• wherein the cutting tool bit receiving end comprises a cutting tool bit receiving base that is configured for engaging with a cutting tool bit and rotates the cutting tool bit for cutting action, wherein the cutting tool bit receiving base rotates with a rotational axis that is orthogonal to the longitudinal axis of the elongated body;
• wherein the elongated body comprises a series of gears connecting the drive shaft to the cutting tool bit receiving end;
• wherein the series of gears are configured in an arrangement that converts a coaxial rotation of the drive shaft to a rotation of the cutting tool bit receiving base;
• and a guide assembly comprising:
• a guide portion configured for attaching to a resected surface at a distal end of the tibia, wherein the guide portion comprises a hole for receiving and allowing the cutting tool bit to extend therethrough;
• and a guide head portion extending in proximal direction from the guide portion and configured for attaching to the anterior side of the tibia, wherein the cutting tool bit receiving end of the elongated body is configured to translate linearly in a direction that is coaxial to the rotational axis of the cutting tool bit and orthogonal to the longitudinal axis.