1. A method for registering a bone of a patient with a computer assisted orthopaedic surgery system, the method comprising: retrieving an image of the bone including indicia of the position of a magnetic source coupled to the bone, the image defining an image coordinate system; determining a position of a reference array coupled to the bone, the reference array defining a bone coordinate system; determining first data indicative of the position of the magnetic source in the bone coordinate system; determining second data indicative of a correlation between the image coordinate system and the bone coordinate system based on the first data; and displaying an image of the bone in a position determined based on the second data.