Abstract: An implant part for an orthopedic knee joint prosthesis has a surface region which faces and contacts bone in an implanted state. A least part of the implant part is made from a plastics material, in particular polyether ether ketone or polyether ether ketone composite material. The implant part has a three-dimensional surface structure in the surface region facing the bone. The three-dimensional surface structure includes a rib structure, a first rib portion extending in a plane on a surface of the surface region, or a first rib of the rib structure extending in the plane on the surface of the surface region, and a second rib portion extending in the plane on the surface of the surface region, or a second rib of the rib structure extending in the plane on the surface of the surface region extending in the plane in different directions, at least in portions.

Abstract: A joint endoprosthesis is made at least partially of or includes a plastic, such as polyether ether ketone (PEEK) or polyether ether ketone (PEEK) composite material. The joint endoprosthesis includes at least one sensor device for sensing a force acting upon a sliding surface of the joint endoprosthesis. The joint endoprosthesis also includes electronics for obtaining the data sensed by the at least one sensor device, and an energy supply device for supplying the at least one sensor device and the electronics. The at least one sensor device is embedded in the joint endoprosthesis in plastic.

Abstract: In order to provide a tibial component for a knee joint endoprosthesis, wherein the tibial component comprises a tibial plate with a top side and a bottom side and comprises an anchoring projection protruding from the bottom side for insertion into the medullary space of a tibia to anchoring the tibial component to the tibia, said tibial component enabling an improved alignment on the tibia, it is proposed that the anchoring projection is mounted on the tibial plate so as to be pivotable and/or rotatable about a longitudinal axis of the anchoring projection. Furthermore, an improved knee joint endoprosthesis system is proposed.

Abstract: A knee joint implant augmentation configured to be arranged between a knee joint implant and a tibia in an implanted state includes a first contact surface which, in the implanted state, is configured to rest at least partially flat on the knee joint implant, a second contact surface lying opposite the first contact surface and configured to rest at least partially flat on the tibia in the implanted state, and a lateral surface, which connects a rim of the first contact surface to a rim of the second contact surface. The lateral surface is configured such that a portion of the lateral surface, which is arranged in a patellar position in the implanted state of the knee joint implant augmentation, is angled at a closed angle greater than 0° with respect to an axis perpendicular to the first contact surface.

Abstract: A method for producing a sliding surface element on the basis of UHMWPE for a joint endoprosthesis includes mixing UHMWPE in powder form with 0.09 to 0.11% by weight of an antioxidant, compacting the UHMWPE mixed with the antioxidant into a molded body, manufacturing one or more sliding surface elements from the molded body by material-removing machining, and irradiating the sliding surface element by gamma radiation or X-ray radiation with a radiation dose of 25 to 45 kGy in order to crosslink the UHMWPE. The method can be practiced without thermal post-treatment of the irradiated sliding surface element.

Abstract: A knee joint endoprosthesis apparatus includes a tibial component for anchoring to a tibia and a meniscal component. The tibial component and the meniscal component are coupled to one another in a coupling position and are completely separated from one another in a separating position. The tibial component has a top side defining an abutment plane, against which a bottom side of the meniscal component abuts in the coupling position. The knee joint endoprosthesis apparatus also includes a coupling device for coupling the tibial component and the meniscal component in the coupling position. The knee joint endoprosthesis apparatus is transferrable from the separating position into the coupling position by a relative movement of the tibial component and the meniscal component.

Abstract: The present application is directed to adjustable wrenches. In one embodiment, the open-ended wrench includes a head with a opening sized to receive workpieces. One or more shims are attached in an adjustable manner within the opening to alter the width of the wrench.