A method for ameliorating joint conditions and diseases and preventing bone hypertrophy can include facilitating cartilage regrowth and preventing bone overgrowth to a damaged bone at a treatment site within a body joint to promote healing. The method can include providing a device having a first section comprising a joint-ward end having an inner surface and an outer surface and fenestrations between the inner and outer surfaces. A second section can include an opposing leading end and a lateral wall extending between the joint-ward end and the leading end. The leading end can be penetrated into the bone to a depth to substantially position: 1) the joint-ward end in a cartilage zone or at a boundary/transition area; and 2) the second section in the bone. Bone overgrowth into the cartilage zone may be prevented within the body joint when the device is positioned at the treatment site.

A method of forming an orthopaedic implant includes: heat bonding a porous material to a surface of an insert to form a bonded insert; placing a bare portion of the bonded insert in an opening formed in a material of an implant body; and heat bonding the bare portion to the material to bond the bonded insert to the implant body.

A method of forming an orthopaedic implant includes: placing a bonding portion of a mating part in an opening formed in an implant body, the opening defining a variable opening width; and heat bonding the bonding portion to the material to bond the mating part to the implant body.

Systems and methods for providing deeper knee flexion capabilities. In some instances, such systems and methods include a femoral knee replacement component that includes an articular surface, a first interior surface, and a second interior surface, wherein the first and second interior surfaces run substantially parallel to each other. In some cases, the articular surface includes an anterior condylar extension that is configured to replace an anterior articular cartilage of a femur such that the anterior extension is configured to terminate adjacent to a proximal limit of the anterior articular cartilage of the femur. Other implementations are also discussed.

Unicondylar tibia implant devices having a bone-facing, distal side that can be detailed with cement fixation features and may include any of or a plurality of grooves, pegs, fins, rails, cavities, and/or coating whereby the geometry of the implant device improves implant-to-cement or cement-to-bone fixation characteristics exceeding that of a traditional flat surface. The implant device may also include a proximal side facing away from the bone-facing, distal side and having a geometry that provides either articulation with (cartilage and meniscal substituting) or receipt of a secondary device coupleable to the implant device on the distal side of the secondary device that features an away-from-bone facing articulating feature. Additionally, the geometry of the implant device in anterior-posterior and medial-lateral directions, among other directions, provides a variety of improvements relative to currently available devices.

Methods and devices for correcting wear pattern defects in joints. The methods and devices described herein allow for the restoration of correcting abnormal biomechanical loading conditions in a joint brought on by wear pattern defects, and also can, in embodiments, permit correction of proper kinematic movement.

A prosthetic system for use as a partial unicompartmental artificial knee replacement system. In one form, an artificial femoral bearing component is implanted along with a floating meniscus component that is configured to cooperate with the femoral bearing component to move through a plurality of translational and rotational positions as the knee rotates through a variety of angles. In another form, an artificial tibial bearing component is implanted along with a floating meniscus component that is configured to cooperate with the tibial bearing component to move through a plurality of translational and rotational positions as the knee rotates through a variety of angles.

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.

Disclosed is a resection guide, a trial knee joint implant, and a surgical instrument for knee arthroplasty. The resection guide, the trial knee joint implant, and the surgical instrument enable implantation of an implant that provides improved vertical fixing force and initial fixing force as compared with an existing cementless or uncemented implant.

An orthopaedic implant includes an implant body having a first surface and a second surface opposite the first surface. The second surface includes a fixation feature. The fixation feature is configured to have a variable width for fastening the implant to a fixation bore formed in a bone. The implant body is D-shaped and has a straight edge and a curved edge. A length of the fixation feature is substantially parallel to the straight edge of the implant body. The fixation feature is configured to have a width that tapers along the length of the fixation feature.