Systems, methods, and devices are disclosed which generate surgical plans that have been customized for a particular patient. One such system includes a client, a surgical plan system and a computer assisted orthopaedic surgery system. The client generates a surgical plan request that includes data relevant to a patient and an orthopaedic surgical procedure to be performed upon the patient. The surgical plan system receives the surgical plan request and generates a surgical plan that has been customized based upon the data of the surgical plan request. The computer assisted orthopaedic surgery system assists a surgeon performing the orthopaedic surgical procedure per the surgical plan generated by the surgical plan system.