Abstract: A system and a method for performing a computer assisted surgery (CAS) uses an expert system driven graphical user interface (GUI) that displays a series of display pages that provide information related to respective steps required to perform the surgery. The system displays virtual images of surgical instruments used during the surgery, overlaid on fluoroscopic images of the implant site to assist the surgical team during instrument calibration, and implant preparation and installation. The GUI presents the surgical team with a succession of options that the surgical team responds to using affirmation and negation actions. These actions are associated with an icon presented in a same region of the display pages, and are annotated with text relevant to an immediately presented option, permitting a substantial portion of the CAS to be effected using a foot-operated input device.

Abstract: A computer system and a method for performing a computer assisted surgery uses an expert system driven graphical user interface (GUI) that displays a series of visual display screens that provide information related to respective steps required to perform the surgery. The system displays virtual images of surgical instruments used during the surgery, as well as computer enhanced images of the implant site to assist the surgical team during instrument calibration, implant site planning, implant site preparation, and implant installation.