A system and method for generating a patient specific instrumentation jig model for implant revision comprises an anchor surface identifier to identify at least one anchor surface from a patient specific bone model of a bone requiring implant revision and from data related to an implanted implant on the bone. The anchor surface is in close proximity to the implanted implant. A PSI revision jig model generator to generate a jig model using at least the identified anchor surface and a model of a replacement implant, the PSI revision jig model generator outputting a jig model comprising at least one patient specific contact surface corresponding to the identified anchor surface, and at least one tool interface portion positioned and/or oriented relative to the at least one contact surface, the at least one tool interface portion adapted to be interfaced to a tool altering the bone for subsequently installing an implant on the bone.
