1. A method of pre-operatively planning an arthroplasty procedure on a joint surface of a bone of a patient joint, the method comprising: a.) using at least one computer to generate a restored bone model, wherein the bone model includes a three dimensional computer model of at least a portion of the joint surface of the bone of the patient joint to undergo the arthroplasty procedure, wherein the restored bone model is representative of the bone in a pre-degenerated state; b.) using the at least one computer to receive an implant model, wherein the implant model includes a three dimensional computer model of at least a portion of a joint surface of an arthroplasty implant to be used in the arthroplasty procedure; c.) using the at least one computer to shape match an articular joint surface of the restored bone model and a corresponding articular joint surface of the implant model; and d.) using the at least one computer to define at least one of a location and orientation of a surgical cut plane relative to the implant model and based on the shape match of step c.).