Abstract: A system for surgical registration. The system may include at least one computing device in communication with a surgical navigation system and the surgical device. The at least one computing device: a) receiving external bone registration data corresponding to locations on the exterior surface of the femur; b) calculating a first registration transform based on the external bone registration data; c) transforming a first bone removal plan of a surgical plan to the operative coordinate system based on the first registration transform; d) receiving internal bone canal registration data corresponding to at least one of location or orientation data from the inner canal of the femur; e) calculating a second registration transform based on both of the external and internal bone canal bone registration data; and f) transforming a second bone removal plan of the surgical plan to the operative coordinate system based on the second registration transform.

Abstract: A system for surgical registration. The system may include at least one computing device in communication with a surgical navigation system and the surgical device. The at least one computing device: a) receiving external bone registration data corresponding to locations on the exterior surface of the femur; b) calculating a first registration transform based on the external bone registration data; c) transforming a first bone removal plan of a surgical plan to the operative coordinate system based on the first registration transform; d) receiving internal bone canal registration data corresponding to at least one of location or orientation data from the inner canal of the femur; e) calculating a second registration transform based on both of the external and internal bone canal bone registration data; and f) transforming a second bone removal plan of the surgical plan to the operative coordinate system based on the second registration transform.

Abstract: A system for surgical registration. The system may include at least one computing device in communication with a surgical navigation system and the surgical device. The at least one computing device: a) receiving external bone registration data corresponding to locations on the exterior surface of the femur; b) calculating a first registration transform based on the external bone registration data; c) transforming a first bone removal plan of a surgical plan to the operative coordinate system based on the first registration transform; d) receiving internal bone canal registration data corresponding to at least one of location or orientation data from the inner canal of the femur; e) calculating a second registration transform based on both of the external and internal bone canal bone registration data; and f) transforming a second bone removal plan of the surgical plan to the operative coordinate system based on the second registration transform.

Abstract: A method for generating an improved tool path for cutting a bone so as to minimize soft tissue trauma, wherein the method comprises: accessing an image of the bone which is to be cut; accessing an image of a pre-determined cutting pattern; superimposing the image of the pre-determined cutting pattern against the image of the bone; calculating the intersection of the pre-determined cutting pattern and the bone using the superimposed images of the pre-determined cutting pattern and the bone; and generating a tool path based upon the intersection of the pre-determined cutting pattern and the bone so as to minimize soft tissue trauma by leaving a thin perimeter of bone at the boundary of the bone cut when the boundary of the bone cut is adjacent to a bone surface.

Abstract: A method for generating an improved tool path for cutting a bone so as to minimize soft tissue trauma, wherein the method comprises: accessing an image of the bone which is to be cut; accessing an image of a pre-determined cutting pattern; superimposing the image of the pre-determined cutting pattern against the image of the bone; calculating the intersection of the pre-determined cutting pattern and the bone using the superimposed images of the pre-determined cutting pattern and the bone; and generating a tool path based upon the intersection of the pre-determined cutting pattern and the bone so as to minimize soft tissue trauma by leaving a thin perimeter of bone at the boundary of the bone cut when the boundary of the bone cut is adjacent to a bone surface.

Abstract: Methods, systems and apparatus for planning the position of a prosthesis in a long bone in orthopaedic surgical procedures, such as hip replacement surgery, knee replacement surgery, long bone osteotomies, and the like. A bone model is generated from a scanned image of a bone, a prosthesis model is selected from a library of prosthesis models and then a cavity model is formed based on the prosthesis model and/or the bone model. The cavity model may then be positioned over the bone model, either interactively by the surgeon or automatically through an algorithm based on clinical parameters, to determine a reasonable location for implantation of a prosthesis within the bone. The cavity model allows the surgeon to optimize placement of the implant within the bone, and it provides important clinical information to the surgeon, such as areas in which press fits are provided, extension areas for possible subsidence and access areas for allowing the surgeon to insert the implant into the cavity.