A multicomponent implant system includes a multicomponent implant comprising a base plate and a load plate. The base plate includes a bone facing surface and a base plate interface surface. The load plate includes a load plate interface surface and a load bearing surface, the load bearing surface being substantially parallel to the load plate interface surface and having a contour substantially corresponding to a contour of a removed portion of the articular surface. Both the load plate interface surface and base plate interface surface have a contour substantially corresponding to the contour of the load bearing surface. The load plate is configured to be advanced in an arcuate direction to slidably couple the load plate to the base plate after the base plate has been secured within the first excision site by an anchor.

The present invention relates to a spacer device including a sensor as well as electronic means for obtaining and transmitting the data detected by the sensor.

A modular knee joint prosthesis is configured to move between an extended position and a flexion position. The modular knee joint prosthesis includes a femoral component that is configured to be mounted to a femur. The femoral component has a first cutout or opening in a central region thereof for receiving a femoral insert. The modular knee joint prosthesis also includes a tibial component that is configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component. The tibial component has a second cutout or opening in a central region thereof for receiving a tibial insert. A kit includes the modular knee joint prosthesis, at least two of the femoral inserts having different geometries, and at least two of the tibial inserts having different geometries.

Systems including a provisional tibial prosthesis system are disclosed. The provisional system can include a tibial component, a base component, and a shim component. The tibial component can have a proximal surface and a distal surface, the distal surface can be configured to seat on a resected proximal surface of a tibia. The base component can have a proximal surface and can be configured to couple with the tibial component when disposed on the proximal surface thereof. The shim component can have a proximal surface and a distal surface. The proximal surface can be configured as an articulating surface sized and shaped to articulate with a femoral prosthesis and the distal surface can be configured to couple with the base component at the proximal surface thereof.

A modular knee joint prosthesis is configured to move between an extended position and a flexion position. The modular knee joint prosthesis includes a femoral component that is configured to be mounted to a femur. The femoral component has a first cutout or opening in a central region thereof for receiving a femoral insert. The modular knee joint prosthesis also includes a tibial component that is configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component. The tibial component has a second cutout or opening in a central region thereof for receiving a tibial insert. A kit includes the modular knee joint prosthesis, at least two of the femoral inserts having different geometries, and at least two of the tibial inserts having different geometries.

Proposed is a bearing component for an artificial knee joint, the bearing component including a body part, whose plane shape is oval, having an indentation portion formed by depressing a posterior center to a predetermined depth toward a center of the body part, a protruding portion protruding from an upper surface of the body part and introduced into an opening of a femoral component, a coupling portion provided on a lower surface of the body part, and having an engagement surface of a certain height to form a step difference with an outer circumferential surface of the body part, the engagement surface being formed on left and right sides of the coupling portion, and being not formed on an indentation surface, and a fastening portion having a plurality of coupling protrusions formed in a portion where the engagement surface of the coupling portion is not formed.

An orthopaedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized and shaped to substantially match portions of the periphery of a typical resected proximal tibial surface, such that proper location and orientation is evident by resting the baseplate on the tibia. The baseplate periphery provides strategically positioned relief and/or clearance between the baseplate periphery and bone periphery, such as in the posterior-medial portion to prevent deep-flexion component impingement, and in the anterior-lateral portion to avoid undue interaction between the anatomic iliotibial band and prosthesis components.

The present disclosure relates to a unicondylar femoral prosthesis, a tibial pad and a unicondylar replacement prosthesis. The unicondylar femoral prosthesis includes an osteotomy surface configured to connect with a femur and an articular surface configured to abut a tibia. The articular surface includes a distal articular surface and a posterior condyle articular surface. The distal articular surface has a first curvature radius on a sagittal plane, the posterior condyle articular surface has a second curvature radius on the sagittal plane, and a ratio of the first curvature radius to the second curvature radius ranges from 1.4 to 2.1. The articular surface has a third curvature radius on a coronal plane, and the third curvature radius is equal to the first curvature radius.

A method of navigating a cutting instrument, via a computer system, the method comprising: (a) mounting a patient-specific anatomical mapper (PAM) to a human in a single known location and orientation, where the PAM includes a surface precisely and correctly mating with a human surface correctly in only a single location and orientation; (b) mounting a reference inertial measurement unit (IMU) to the human; (c) operatively coupling a guide to the PAM, where the guide includes an instrument inertial measurement unit (IMU) and at least one of a cutting slot and a pin orifice; (d) outputting data from the reference IMU and the instrument IMU indicative of changes in position and orientation of the guide with respect to the human; (e) repositioning the guide with respect to the human to a position and an orientation consistent with a plan for carrying out at least one of a cut and pin placement; and, (f) visually displaying feedback concerning the position and orientation of the guide with respect to the human using data output from the reference IMU and the instrument IMU, which data is processed by a computer program and the computer program directs the visually displayed feedback.

Embodiments of the invention include a knee arthroplasty trialing system and method with a femoral component and a tibial trial that has one or more spacers and one or more articular trials. Some embodiments include spacers and articular trials that may be moved in and out of the joint space without significantly distracting the femoral component away from the tibial trial. Some spacers and trials are configured to be inserted and removed from a joint space substantially along an anterior-posterior axis.