#$%^&*AU2020200946A120200227.pdf#####SYSTEMS AND METHODS FOR INTRA-OPERATIVE PELVIC REGISTRATION ABSTRACT A system for guided landmark capture during a registration procedure involving registering intra-operative data associated with a first bone of a patient with a computer model of the first bone, the system comprising: a) a surgical navigation system (7) comprising a tracking device (8) and at least one tool (58) configured to be tracked in its movement by the tracking device (8)； b) a display device (9)； and c) at least one computing device in electrical communication with the display device and the surgical navigation system (7), the at least one computing device comprising: an input； an output； a memory； and a central processing unit ("CPU") in electrical communication with the input, the output and the memory, the memory including software for operating a graphical user interface ("GUI"), the at least one computing device configured to: i) display the GUI, and the computer model of the first bone on the display device (9), the GUI comprising a virtual point displayed on the computer model of the first bone, the virtual point corresponding to a physical point on the first bone for intra-operatively capturing with the at least one tool, the GUI further comprising a graphic at least partially surrounding the virtual point, the graphic being spaced apart from the virtual point by a radius； and ii) adjust a size of the radius of the graphic based on a change in distance between the at least one tool and the physical point on the first bone.
