Patient-adapted articular repair systems, including implants, instruments, and surgical plans, and methods of making and using such systems, are disclosed herein. In particular, various embodiments include knee joint articular repair systems designed for posterior stabilization, including patient-adapted posterior-stabilizing features.

A knee replacement prosthesis comprising a femoral component and a tibial component that enable anterior-posterior translation of the femur relative to the tibia and enable the tibia to rotate about its longitudinal axis during flexion of the knee. The femoral component connects to the distal end of a resected femur and includes medial and lateral condyles having distal, articulating surfaces, and a patellar flange having a patellar articulating surface. The tibial component connects to the proximal end of a resected tibia and includes a proximal bearing surface with medial and lateral concavities that articulate with the medial and lateral condyles. The condylar articulating surfaces and the said concavities are substantially defined by non-uniform, rational B-spline surfaces (NURBS).

Implantable assemblies for manipulating energy transferred by members defining an anatomical joint, and methods of implanting and using. The members of the anatomical joint collectively define a path of motion. An assembly includes a first component configured to be attached to a first member of the anatomical joint; a second component configured to be attached to a second member of the anatomical joint; and a joint joining the first and second components. The first component includes a first flex member and the second component includes a second flex member. The first and second flex members are configured to flex to absorb energy transferred by the members of the anatomical joint.

A component of an artificial joint according to an exemplary aspect of the present disclosure includes, inter alia, a base plate and a post selectively removable from the base plate. Further, an outer surface of the post includes a layer of the bone ingrowth material along substantially the entire length of the post.

Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.

A total knee replacement whose bearing surfaces are derived from an anatomically representative femur and a modified baseline tibial surface. The contacting femoral and tibial bearing surfaces comprise the inter-codylar as well as condylar regions.

The present invention provides an artificial joint, including a femur connecting member, a tibia connecting member, and a receiving member, wherein the femur connecting member is connected and fixed with the receiving member and the tibia connecting member via a fixing member unparallel to a joint-twisting axis, and wherein cushion member receives the femur connecting member via a pivot-receiving surface and receives the tibia connecting member via a twist-receiving surface, thereby providing an durable and reliable artificial joint.

According to one example, a bearing component for a knee arthroplasty is disclosed. The bearing component can optionally comprise any one or combination of: a medial compartment having an medial articular surface with a medial articular track and having a first thickness as measured at the medial articular track between the medial articular surface a medial distal surface; and a lateral compartment having a lateral articular surface with a lateral articular track and having a second thickness as measured at the lateral articular track between the lateral articular surface a lateral distal surface; wherein the medial articular surface at the medial articular track and the lateral articular surface at the lateral articular track each have an inclination so as to form an acute angle with respect to a resected proximal surface of a tibia.

An implantable orthopedic knee prosthesis includes a component that is configured to be coupled to a surgically-prepared bone. A fixation side of the component includes a fixation surface that has an angled cement pocket formed therein.

An orthopaedic joint replacement system is shown and described. The system includes a number of prosthetic components configured to be implanted into a patient's knee. The system also includes a number of surgical instruments configured for use in preparing the bones of the patient's knee to receive the implants. A method or technique for using the surgical instruments to prepare the bones is also disclosed.