Patent ID: 8480679

Claim:
A method of generating a restored bone model representative of at least a portion of a patient bone in a pre-degenerated state, the method comprising utilizing a computer processing device to perform the operations of: determining reference information from a reference portion of a degenerated bone model representative of the at least a portion of the patient bone in a degenerated state; using the reference information to restore a degenerated portion of the degenerated bone model into a restored portion representative of the degenerated portion in the pre-degenerated state; and verifying the accuracy of the restored bone model, wherein the accuracy of the restored bone model is acceptable if an axis extending along a trochlear groove of the restored bone model is within a range that is less than or equal to approximately six degrees of being perpendicular with a joint line extending across most distal contact points of a medial femoral condyle and a lateral femoral condyle, the joint line associated with the restored bone model.