Abstract: A method of preparing a tibia to receive a tibial implant component includes performing a first set of cuts to prepare a floor interface surface on the tibia, wherein the floor interface surface includes a portion on each side of a tibial eminence extending above the floor interface surface on the tibia. The method further includes performing a second set of cuts to prepare a tibial eminence wall interface surface, wherein the wall interface surface extends substantially perpendicular to the floor interface surface between the floor interface surface and a top surface of the tibial eminence. The method further includes performing a third set of cuts to prepare a radiused intersection between the floor interface surface and the wall interface surface. The sets of cuts are performed subject to a cutting restraint guide. At least one set of cuts may be performed using a rotary cutter.

Abstract: The description relates to surgical computer systems, including computer program products, and methods for implant planning using captured joint motion information. Data is captured representative of a range of motion of a joint associated with a particular individual, where the joint includes a first bone and a second bone. The first bone of the joint is represented and a first implant model is associated with the representation of the first bone. Based on the captured data, a relationship is determined between the first implant model and a representation of the second bone or a second implant model through at least a portion of the range of motion of the joint. Information is displayed representative of the determined relationship.

Abstract: A method for customizing an interactive control boundary based on a patient-specific anatomy includes obtaining a standard control boundary and determining an intersection between a reference feature associated with the standard control boundary and a virtual representation of an anatomy of the patient. The method further includes identifying an anatomic perimeter at the intersection between the identified reference feature and the virtual representation of the anatomy. An anatomic feature on the virtual representation of the anatomy is determined from the intersection of the reference feature and the virtual representation of the anatomy. The standard control boundary is modified based on at least one anatomic feature to generate a customized control boundary.

Abstract: A method for generating a customized haptic boundary based on a patient-specific anatomy includes identifying a standard haptic boundary based on a geometry of a virtual implant model to be implanted on the anatomy. The method also includes identifying a reference feature associated with a virtual implant model and determining an intersection between the identified reference feature and a virtual model associated with an anatomy of the patient. An anatomic perimeter at the intersection between the identified reference feature and the virtual model of the anatomy is identified and an one anatomic feature is determined on the virtual model of the anatomy. The standard haptic boundary is modified based on the anatomic feature to generate a customized haptic boundary.

Abstract: A method for customizing an interactive control boundary includes identifying a reference feature associated with a virtual implant model, wherein the reference feature is one of a point, a line, a plane, and a surface associated with a virtual implant model. The method further includes determining an intersection between the identified reference feature and a virtual model associated with an anatomy of the patient.

Abstract: Described are computer-based methods and apparatuses, including computer program products, for implant planning using areas representing cartilage. A predetermined number of control points for generating a predetermined number of areas representing cartilage are determined, wherein the predetermined number of control points are based on an implant component. Measurements corresponding to a plurality of measured cartilage points are received, wherein each cartilage point is based on an associated control point from the predetermined number of control points. A plurality of areas representing cartilage are generated, wherein each area representing cartilage is larger than and projects to an associated control point from the plurality of control points. A representation of the implant component is positioned based on a representation of a bone, the representation of the bone comprising representations of the plurality of areas representing cartilage.

Abstract: A method for customizing an interactive boundary based on a patient-specific feature, includes displaying a graphical representation of an implant in virtual coordinate space and displaying a graphical representation of a bone in virtual coordinate space. The method further includes positioning the graphical representation of the implant relative to the graphical representation of the bone based on a user input and extracting reference feature information associated with the virtual representation of the implant. The method further includes mapping the extracted reference feature information to the graphical representation of the bone, receiving information indicative of a positional landmark associated with the bone, and estimating an intersection between the positional landmark and the mapped reference feature. A virtual boundary is generated based, at least in part, on the estimated intersection between the positional landmark and the mapped reference feature.

Abstract: A method for customizing an interactive control boundary based on a patient-specific feature comprises identifying a reference feature associated with a virtual implant model. The method also comprises determining an intersection between the identified reference feature and a virtual model associated with an anatomy of the patient. A virtual boundary is generated based on the determined intersection between the identified reference feature associated with the virtual implant model and the virtual model associated with the anatomy of the patient.

Abstract: The description relates to surgical computer systems, including computer program products, and methods for implant planning using captured joint motion information. Data is captured representative of a range of motion of a joint associated with a particular individual, where the joint includes a first bone and a second bone. The first bone of the joint is represented and a first implant model is associated with the representation of the first bone. Based on the captured data, a relationship is determined between the first implant model and a representation of the second bone through at least a portion of the range of motion of the joint. Information is displayed representative of the determined relationship.

Abstract: A surgical system includes a surgical tool and a processing circuit. The processing circuit is configured to provide a plurality of virtual haptic interaction points where each virtual haptic interaction point is associated with a portion of the surgical tool such that movement of the surgical tool corresponds to movement of the plurality of virtual haptic interaction points, establish a haptic object that defines a working boundary for the surgical tool, and constrain at least one of the portions of the surgical tool based on a relationship between at least one of the plurality of virtual haptic interaction points and the haptic object.

Abstract: A joint distraction lever for measuring a distraction force is disclosed. The joint distraction lever includes a lever body having a handle portion and a working portion. The lever body has a fulcrum extending from a bottom surface of the working portion of the lever body and a distal tip, wherein the distal tip is raised above a top surface of the working portion of the lever body. The joint distraction lever is configured to measure a distraction force applied at the distal tip during a distraction procedure when a torque is applied by an external force applied on the handle portion of the lever body. The joint distraction lever further includes an indicator configured to provide feedback related to the distraction force applied at the distal tip, as measured by the joint distraction lever.

Abstract: The description relates to surgical computer systems, including computer program products, and methods for implant planning using captured joint motion information. Data is captured representative of a range of motion of a joint associated with a particular individual, where the joint includes a first bone and a second bone. The first bone of the joint is represented and a first implant model is associated with the representation of the first bone. Based on the captured data, a relationship is determined between the first implant model and a representation of the second bone through at least a portion of the range of motion of the joint. Information is displayed representative of the determined relationship.

Abstract: A method of preparing a tibia to receive a tibial implant component includes performing a first set of cuts to prepare a floor interface surface on the tibia, wherein the floor interface surface includes a portion on each side of a tibial eminence extending above the floor interface surface on the tibia. The method further includes performing a second set of cuts to prepare a tibial eminence wall interface surface, wherein the wall interface surface extends substantially perpendicular to the floor interface surface between the floor interface surface and a top surface of the tibial eminence. The method further includes performing a third set of cuts to prepare a radiused intersection between the floor interface surface and the wall interface surface. The sets of cuts are performed subject to a cutting restraint guide. At least one set of cuts may be performed using a rotary cutter.

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 for generating a customized haptic boundary based on a patient-specific anatomy includes identifying a standard haptic boundary based on a geometry of a virtual implant model to be implanted on the anatomy. The method also includes identifying a reference feature associated with a virtual implant model and determining an intersection between the identified reference feature and a virtual model associated with an anatomy of the patient. An anatomic perimeter at the intersection between the identified reference feature and the virtual model of the anatomy is identified and an one anatomic feature is determined on the virtual model of the anatomy. The standard haptic boundary is modified based on the anatomic feature to generate a customized haptic boundary.

Abstract: A method for customizing an interactive control boundary based on a patient-specific feature comprises identifying a reference feature associated with a virtual implant model. The method also comprises determining an intersection between the identified reference feature and a virtual model associated with an anatomy of the patient. A virtual boundary is generated based on the determined intersection between the identified reference feature associated with the virtual implant model and the virtual model associated with the anatomy of the patient.

Abstract: A method for customizing an interactive boundary based on a patient-specific feature, includes displaying a graphical representation of an implant in virtual coordinate space and displaying a graphical representation of a bone in virtual coordinate space. The method further includes positioning the graphical representation of the implant relative to the graphical representation of the bone based on a user input and extracting reference feature information associated with the virtual representation of the implant. The method further includes mapping the extracted reference feature information to the graphical representation of the bone, receiving information indicative of a positional landmark associated with the bone, and estimating an intersection between the positional landmark and the mapped reference feature. A virtual boundary is generated based, at least in part, on the estimated intersection between the positional landmark and the mapped reference feature.