Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.

Abstract: A knee prosthesis (e.g., a tibial implant or component) is disclosed. In one embodiment, the tibial implant includes a load bearing component (e.g., a tibial tray) and a support member arranged and configured to be at least partially positioned within an intramedullary canal of a patient's bone. In some embodiments, the tibial implant may also include one or more pegs positioned anteriorly on a bottom surface of the tray and one or more bridges for coupling the pegs to the support member so that loads received by the pegs are transferred to the support member via the bridge. In addition, and/or alternatively, the tibial implant may include one or more chamfers or loading zones for elongating the transition area between the support member and the bottom surface of the tibial tray to extend the area over which the load is transferred.

Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.

Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.

Abstract: A knee prosthesis (10, 20) is disclosed. In one example of an embodiment, the knee prosthesis includes a load bearing component (12, 22) and a stem (14, 24) arranged and configured to be coupled within an intramedullary canal of a patient's bone. In some embodiments, the knee prosthesis may also include a coupler (16) for coupling the stem to the load bearing component. In use, the stem is offset from and angled relative to the load bearing component to facilitate reception of the stem in a bowed or angled intramedullary canal of a patient's tibia or femoral bone. In one example of an embodiment, the coupler may include first (32) and second (34) ends, the central longitudinal axis (33) of the first end and the central longitudinal axis (35) of the second end are offset from one another, non-parallel to one another, and do not intersect or cross each other's path at any point.

Abstract: Instrument that is made to match the perimeter shape of a Patient Specific Knee Implant (PSKI) with features for locating holes in the distal femur such that the posts or lugs in the femoral implant locate the femoral implant centered medial-laterally within an acceptable degree of precision to prevent overhang of either the medial or lateral side of the femoral implant over the perimeter of the distal femur bone resections. Patient specific implant technology, in which a three-dimensional model of at least a portion of a bone is accessed and a three-dimensional solution volume is defined based on resection cuts used in fitting an implant on the portion of the bone. An outline representation of at least a portion of an outer surface of a periphery of the resultant bone volume is determined and the outline representation is used in one or more operations related to instrument matching.

Abstract: Instrument that is made to match the perimeter shape of a Patient Specific Knee Implant (PSKI) with features for locating holes in the distal femur such that the posts or lugs in the femoral implant locate the femoral implant centered medial-laterally within an acceptable degree of precision to prevent overhang of either the medial or lateral side of the femoral implant over the perimeter of the distal femur bone resections. Patient specific implant technology, in which a three-dimensional model of at least a portion of a bone is accessed and a three-dimensional solution volume is defined based on resection cuts used in fitting an implant on the portion of the bone. An outline representation of at least a portion of an outer surface of a periphery of the resultant bone volume is determined and the outline representation is used in one or more operations related to instrument matching.