Abstract: A surgical system includes a tracking system configured to intraoperatively track relative positions of bones of a joint, a user interface configured to obtain a user input indicating a post-operative value for the joint, and a computer programmed to generate, based on the relative positions of the bones and the post-operative value, a planned orientation for an implant to be implanted in the joint, and to generate a surgical plan based on the planned orientation for the implant.

Abstract: Systems, methods and computer-program products are provided for aiding in positioning between a surgical object and a machine vision camera in a surgical environment. The machine vision camera senses a position and orientation of a surgical object in its field of view. Controller(s) virtually define a zone within the field of view that indicates a range of acceptable positions for the surgical object relative to a position of the machine vision camera. The controller(s) obtain an acceptable orientation range for the surgical object relative to an orientation of the machine vision camera. The controller(s) execute a GUI to simultaneously present, on the display device, representations of: the field of view; the zone within the field of view; the position of the surgical object relative to the zone; and a current angle difference between the surgical object and the machine vision camera.

Abstract: A femoral prosthetic component includes a patellar guide portion, a pair of condyles projecting from the guide portion and forming an intercondylar notch therebetween, a bearing surface, and an interface surface configured to face a resected surface of a femur. The interface surface comprises an anterior face and a posterior face, and is substantially contoured between the anterior and posterior face to match a contoured surface of the femur. The substantially contoured interface surface may include at least one planar surface portion to about a flat cut portion in the surface of the femur. This planar surface portion may be a distal flat at a distal face of the interface surface. The contoured interface surface may alternatively include a plurality of planar surface portions. The femoral prosthetic component is configured such that preparation of the bone to match the interface surface results in minimal resection of the distal femur.

Abstract: A method includes obtaining a planned position of a first prosthetic component for implantation in a joint, obtaining positional data indicative of relative positions of bones of the joint, calculating, based on the positional data and the planned position of the first prosthetic component, a planned separation distance for the joint, facilitating adjustment of the planned position based on a desired separation distance by updating the planned separation distance in response to an adjusted planned position of the first prosthetic component, and guiding installation of the first prosthetic component in the joint in the adjusted planned position.

Abstract: Systems, methods and software are provided for aiding in positioning of objects in a surgical environment. A tracker is rigidly affixed to a surgical object. A camera has a field of view and senses positions of the tracker in the field of view. Controller(s) provide a zone positioned within the field of view at a location that is static relative to the field of view such that the zone is located independent of the sensed positions of the tracker. The zone defines a range of acceptable positions for the tracker relative to a position of the camera. Controller(s) acquire positions of the tracker as the surgical object is moved throughout a range of motion and enable evaluation of the positions of the tracker throughout the range of motion relative to the zone to aid in positioning of one or more of: the camera, the tracker, or the surgical object.

Abstract: A femoral prosthetic component includes a patellar guide portion, a pair of condyles projecting from the guide portion and forming an intercondylar notch therebetween, a bearing surface, and an interface surface configured to face a resected surface of a femur. The interface surface comprises an anterior face and a posterior face, and is substantially contoured between the anterior and posterior face to match a contoured surface of the femur. The substantially contoured interface surface may include at least one planar surface portion to about a flat cut portion in the surface of the femur. This planar surface portion may be a distal flat at a distal face of the interface surface. The contoured interface surface may alternatively include a plurality of planar surface portions. The femoral prosthetic component is configured such that preparation of the bone to match the interface surface results in minimal resection of the distal femur.

Abstract: Systems, methods, and guidance techniques for guiding placement of a robotic manipulator relative to an anatomy. A localizer tracks the robotic manipulator and the anatomy. Controller(s) obtain workspace parameters of the robotic manipulator and capture, from the localizer, a current state of the robotic manipulator relative to the anatomy. The controller(s) capture, from the localizer, states of the anatomy in response to movement of the anatomy according to a prescribed manner or a predetermined manner and determine operative parameters of the anatomy based on the captured states. The controller(s) compare the workspace parameters to the operative parameters to determine a desired state for the robotic manipulator relative to the anatomy, whereby the workspace parameters of the robotic manipulator have an acceptable relationship with respect to the operative parameters of the anatomy. The controller(s) guide placement of the robotic manipulator from the current state to the desired state.

Abstract: Surgical systems and methods for use with a hand-guided tool. The surgical system includes a robotic manipulator that holds a tool guide. The tool guide receives and guides the surgical tool to enable the tool to manipulate a bone. The robotic manipulator autonomously aligns the tool guide to a target orientation relative to the bone. The tool guide is moved to an initial location adjacent to the bone while remaining aligned with the target orientation. The initial location is suitable for the tool to perform an initial manipulation of the bone. The robotic manipulator facilitates withdrawal of the tool guide away from the initial location to a spaced location after the initial manipulation of the bone while maintaining alignment of the tool guide with the target orientation at the spaced guide location. The spaced guide location is suitable for the tool to perform a further manipulation of the bone.

Abstract: A robotic surgery system includes a robotic manipulator and a cutting guide to be coupled to the robotic manipulator. The cutting guide is configured to guide a cutting tool so that the cutting tool cuts tissue of the patient. A control system is coupled to the robotic manipulator to control a location of the cutting guide and/or the cutting tool relative to the tissue.

Abstract: A surgical saw assembly that is adapted for cutting an anatomy. The surgical saw assembly includes a blade guard that supports a saw blade prevent deflection or skiving of the saw blade. The blade guard is rotatably moveable and has a front edge profile that interacts with a surface of the anatomy. The front edge profile has a geometry that is at least partially curved and/or follows a non-linear path of movement to provide a smooth interaction between the blade guard and the surface of the anatomy during rotational cuts that are not directly normal to the anatomical surface.

Abstract: Aspects of the disclosure may involve a method of generating resection plane data for use in planning an arthroplasty procedure on a patient bone. The method may include: obtaining patient data associated with at least a portion of the patient bone, the patient data captured using a medical imaging machine; generating a three-dimensional patient bone model from the patient data, the patient bone model including a polygonal surface mesh; identifying a location of a posterior point on the polygonal surface mesh; creating a three-dimensional shape centered at or near the location; identifying a most posterior vertex of all vertices of the polygonal surface mesh that may be enclosed by the three-dimensional shape; using the most posterior vertex as a factor for determining a posterior resection depth; and generating resection data using the posterior resection depth, the resection data configured to be utilized by a navigation system during the arthroplasty procedure.

Abstract: Disclosed herein is a balancer algorithm to perform joint balancing calculations to identify target solutions based on surgeon preference. The balancer algorithm can generate a suggested final implant plan from a predetermined range. The balancer algorithm can be used in a knee arthroplasty procedure to generate bone resection depths, bone gaps, implant angulations, required soft tissue release, etc. Input to the balancer algorithm can include preoperative data, intraoperative data, and surgeon preference data.

Abstract: Systems, methods and software are provided for aiding in positioning of objects in a surgical environment. A tracker is rigidly affixed to a surgical object. A camera has a field of view and senses positions of the tracker in the field of view. Controller(s) provide a zone positioned within the field of view at a location that is static relative to the field of view such that the zone is located independent of the sensed positions of the tracker. The zone defines a range of acceptable positions for the tracker relative to a position of the camera. Controller(s) acquire positions of the tracker as the surgical object is moved throughout a range of motion and enable evaluation of the positions of the tracker throughout the range of motion relative to the zone to aid in positioning of one or more of: the camera, the tracker, or the surgical object.

Abstract: Aspects of the disclosure may involve a method of generating resection plane data for use in planning an arthroplasty procedure on a patient bone. The method may include: obtaining patient data associated with at least a portion of the patient bone, the patient data captured using a medical imaging machine; generating a three-dimensional patient bone model from the patient data, the patient bone model including a polygonal surface mesh; identifying a location of a posterior point on the polygonal surface mesh; creating a three-dimensional shape centered at or near the location; identifying a most posterior vertex of all vertices of the polygonal surface mesh that may be enclosed by the three-dimensional shape; using the most posterior vertex as a factor for determining a posterior resection depth; and generating resection data using the posterior resection depth, the resection data configured to be utilized by a navigation system during the arthroplasty procedure.

Abstract: Systems, methods and software are provided for aiding in positioning of a camera relative to objects in a surgical environment. The camera has a 3D field of view and senses positions of the objects in the field of view. A controller is coupled to the camera and defines a first zone and a second zone within the field of view. Each zone defines a range of acceptable positions for one of the objects relative to a position of the camera. The controller receives the position of the objects. A graphical user interface displays image representations of: the field of view, the first zone relative to the field of view, the second zone relative to the field of view, the position of one object relative to the first zone, and the position of another object relative to the second zone.

Abstract: A femoral prosthetic component includes a patellar guide portion, a pair of condyles projecting from the guide portion and forming an intercondylar notch therebetween, a bearing surface, and an interface surface configured to face a resected surface of a femur. The interface surface comprises an anterior face and a posterior face, and is substantially contoured between the anterior and posterior face to match a contoured surface of the femur. The substantially contoured interface surface may include at least one planar surface portion to about a flat cut portion in the surface of the femur. This planar surface portion may be a distal flat at a distal face of the interface surface. The contoured interface surface may alternatively include a plurality of planar surface portions. The femoral prosthetic component is configured such that preparation of the bone to match the interface surface results in minimal resection of the distal femur.

Abstract: A method includes obtaining a planned position of a first prosthetic component for implantation in a joint, obtaining positional data indicative of relative positions of bones of the joint, calculating, based on the positional data and the planned position of the first prosthetic component, a planned separation distance for the joint, facilitating adjustment of the planned position based on a desired separation distance by updating the planned separation distance in response to an adjusted planned position of the first prosthetic component, and guiding installation of the first prosthetic component in the joint in the adjusted planned position.

Abstract: A method for guiding implantation of a first prosthetic component includes determining, using a virtual model of a joint including first and second bones, a planned orientation of the first prosthetic component in the joint, applying a valgus/varus moment to the joint at a plurality of flexion positions of the joint, and recording positional data indicative of relative positions of the first bone and the second bone at the plurality of flexion positions of the joint. The method also includes calculating estimated separation distances between the first prosthetic component and a second prosthetic component, adjusting the planned orientation of the first prosthetic component in the joint in response to an error between the estimated separation distances and one or more desired separation distances, and guiding implantation of the first prosthetic component on the first bone in accordance with the adjusted planned orientation of the first prosthetic component.

Abstract: A robotic surgery system includes a robotic manipulator and a cutting guide to be coupled to the robotic manipulator. The cutting guide is configured to guide a cutting tool so that the cutting tool cuts tissue of the patient. A control system is coupled to the robotic manipulator to control a location of the cutting guide and/or the cutting tool relative to the tissue.

Abstract: A method for guiding implantation of a first prosthetic component includes determining, using a virtual model of a joint including first and second bones, a planned orientation of the first prosthetic component in the joint, applying a valgus/varus moment to the joint at a plurality of flexion positions of the joint, and recording positional data indicative of relative positions of the first bone and the second bone at the plurality of flexion positions of the joint. The method also includes calculating estimated separation distances between the first prosthetic component and a second prosthetic component, adjusting the planned orientation of the first prosthetic component in the joint in response to an error between the estimated separation distances and one or more desired separation distances, and guiding implantation of the first prosthetic component on the first bone in accordance with the adjusted planned orientation of the first prosthetic component.