A method of manufacturing an arthroplasty jig is disclosed herein. The method may include the following: generate a bone model, wherein the bone model includes a three dimensional computer model of at least a portion of a joint surface of a bone of a patient joint to undergo an arthroplasty procedure； generate 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； assess a characteristic associated with the patient joint； generate a modified joint surface of the implant model by modifying at least a portion of a joint surface of the implant model according to the characteristic； and shape match the modified joint surface of the implant model and a corresponding joint surface of the bone model.
