A system for preparing a femur to receive an implant includes a saw blade positionable in a first saw blade slot of a distal cutting block and operable to form an axial cut surface on the patient's femur. The saw blade carries on a first side thereof nominal A/P sizing indicia that increments negatively from an anterior top of concavity of the medial condyle to a posterior top of concavity of the medial condyle, when the saw blade is positioned on the axial cut surface of the patient's femur. The saw blade also carries nominal M/L sizing indicia on a second, opposing side of the saw blade. An A/P chamfer cutting block is positionable on the axial cut surface of the femur and is coupled to at least one rotational guide that rotationally orients the A/P chamfer cutting block relative to the patient's femur.
