Arthroplasty jigs and related methods are disclosed. Some of the arthroplasty jigs may comprise a jig body that is configured to align with a surface of a bone, and a positioning component. Certain of the methods may comprise providing such an arthroplasty jig, and aligning the jig body with a surface of a bone so that the positioning component provides at least one of a visible, audible, or tactile indication that such alignment has been achieved. Some of the arthroplasty jigs may comprise a jig body that is configured to align with a surface of a bone, and that is marked with identifying information. Certain of the methods may comprise providing an arthroplasty jig comprising a jig body that is configured to align with a surface of a bone, or providing an arthroplasty jig blank, and marking the arthroplasty jig or the arthroplasty jig blank with identifying information.

Systems, methods and software guide arrangement of a robotic system in an operating room. Controller(s) evaluate surgical procedure information and determine a desired placement of the robotic system in the operating room based on evaluation of the surgical procedure information. A localizer determines a current placement of the robotic system in the operating room. A display provides visual representations of the current placement and the desired placement of the robotic system to guide a user on manual placement of the robotic system in the operating room.

Various embodiments of selecting and/or designing one or more aspects of patient-adapted surgical repair systems based, at least in part, on implementation of patient-adapted biomotion simulation models are disclosed herein.

One variation of a method includes: accessing a virtual patient model defining a target resected contour of a hard tissue of interest; after resection of the hard tissue of interest during a surgical operation, accessing an optical scan recorded by an optical sensor facing a surgical field occupied by a patient, detecting a set of features representing the patient in the optical scan, registering the virtual patient model to the hard tissue of interest in the surgical field based on the set of features, and detecting an actual resected contour of the hard tissue of interest in the optical scan; and calculating a spatial difference between the actual resected contour of the hard tissue of interest and the target resected contour of the hard tissue of interest represented in the virtual patient model registered to the hard tissue of interest in the surgical field.

A number of improvements are provided relating to computer aided surgery. The improvement relates to both the methods used during computer aided surgery and the devices used during such procedures. Some of the improvement relate to controlling the selection of which data to display during a procedure and/or how the data is displayed to aid the surgeon. Other improvements relate to the structure of the tools used during a procedure and how the tools can be controlled automatically to improve the efficiency of the procedure. Still other improvements relate to methods of providing feedback during a procedure to improve either the efficiency or quality, or both, for a procedure.

A robotic system is provided for assisting during bone surgery, adapted to control the position of a limb. The robotic system includes a robotic arm connected to a fixation device for rigidly connecting the distal bone to the robotic arm and allowing movement in six degrees of freedom. Specifically, the fixation device provides at least two fixation points to the distal bone. The first fixation point can be rigidly connected to the distal bone near the joint and the second fixation point can be rigidly connected to a distal position of the distal bone. The rigid connection of the distal bone to the robotic arm allows the robotic system to impose controlled movement on the distal bone in six degrees of freedom.

A combination of a first assembly for guiding resection of a femur and tibia of a knee joint and a second assembly including femoral and tibial knee components. The combination of the first assembly and the second assembly provides optimal placement and positioning of the femoral and tibial knee components to achieve near-normal knee kinematics and tension. The preparation for and placement of the prosthetic knee components provides medial-pivoting kinematics mimicking that of the natural knee thereby promoting improved outcome for the patient.

An angle gauge may be used to facilitate arthroplasty of a knee joint between a femur and a tibia. The angle gauge may have a base configured to contact a distal end of the femur, a post pivotably connected to the base such that the post is visually alignable with Whiteside's Line on the femur, and an angle capture feature configured to capture an angle of Whiteside's Line when the post is in alignment with Whiteside's Line. The post may be part of a sizing guide that indicates an appropriate size of a femoral arthroplasty implant. According to one method for carrying out knee arthroplasty, a distal femur may first be exposed. The orientation of Whiteside's Line on the distal femur may be assessed. Based on the orientation, a position and/or orientation may be defined for one or more resections to be made to the distal femur.

To address technical problems facing knee arthroplasty resection validation, the present subject matter provides a tracked knee arthroplasty instrument for objective measurement of resection depth. By performing a precise comparison between the location of the tracked knee arthroplasty instrument and a reference location, the knee arthroplasty instrument measures and validates each tibial and femoral resection. To address technical problems facing validation of joint laxity following knee arthroplasty, the tracked knee arthroplasty instrument is shaped to validate the flexion gap and extension gap. When the tracked knee arthroplasty instrument is inserted between the resected tibial plateau and femoral head, the instrument shape validates whether the desired flexion gap and extension gap have been achieved.

Systems and methods may be used to perform robot-aided surgery. A system may include a display device and a computing device including a memory device with instructions. The instructions can cause the system to access surgical data, calculate medial and lateral gap data, calculate a recommended component set, and generate a graphical user interface. Accessing surgical data can include accessing soft tissue data indicative of at least tension in soft tissues surrounding a surgical location. The graphical user interface can include an interactive trapezoidal graphic overlaid onto a graphical representation of a distal femur and a proximal tibia. The interactive trapezoidal graphic can include a graphical representation of a medial total gap, a lateral total gap, and a recommended spacer size. The interactive trapezoidal graphic can update in response to adjustments in implant parameters to assist in surgical planning.