A 45 year old patient suffering from advanced left knee osteoarthritis.The patient had a retained implant and could not perform knee replacement with conventional techniques. The patient also suffers from an old malunited fracture tibial plateau, an old united fracture shaft femur fixed by IL nail, and an old ACL and PCL injury. With the help of SurgiNovi patient-specific templates, the patient was finally able to do a knee replacement surgery in which otherwise could have been impossible.