Patient-specific instruments for total ankle arthroplasty

A talar guide for preparing a talus to receive a prosthesis, said talar guide comprising:

• a body including a first portion including a patient-specific surface being contoured to rest against and substantially conform to one or more portions of at least one of a proximal surface, a medial edge, and a lateral edge of a trochlea of a talus.

A patient-specific guide for guiding an instrument to resect a resection portion of a bone to prepare the bone to receive a prosthesis, said guide comprising:

• a body having a patient-specific referencing portion and a resection guide portion, said referencing portion including at least one patient-specific surface being contoured to rest against and substantially conform to a surface of the bone, said resection guide portion including at least one cut referencing surface defining at least a portion of a periphery of the resection portion of the bone;
• and
• said body further including at least one pin aperture disposed in at least one of said referencing portion and said resection guide portion, each said pin aperture disposed within the periphery of the resection portion of the bone when said patient-specific surface is conformingly positioned against the bone, each said pin aperture dimensioned to receive a pin to secure said guide to the bone.