Abstract: A femoral component (2) for mounting onto a femur and being adapted to articulate with a tibial bearing component in a knee prosthesis comprises proximal end portions (7, 10) adapted to be oriented towards the femur when the femoral component (2) is mounted thereon, and distal end portions adapted to be oriented towards the tibial bearing component when the knee prosthesis is fully extended. The proximal end portions (7) comprise posterior proximal end portions which are located on an posterior side of the femoral component and an anterior proximal end portion (10) which is located on an anterior side of the femoral component (2). The femoral component (2) further comprises a medial condyle (13) and a lateral condyle (14) which each extend from one of the posterior proximal end portions beyond the distal portions and towards the anterior proximal end portion (10) of the femoral component (2).

Abstract: Apparatus and methods for replacing a knee joint with an implant prosthesis are described. The method includes distracting the knee, locating the pre-diseased joint line of the knee and referencing cuts to the femur and tibia in the coronal plane relative to the joint line. The method further comprises determining the posterior slope of a cut to the tibia in the sagittal plane such that the gaps between the tibia and femur in extension and flexion are substantially equal. Apparatus for use in the method is described, including a distractor for distracting the joint, a joint level finder for finding the pre-diseased joint line and a flexion gap optimisation device.

Abstract: An endoprosthesis for knee joint arthrodesis having a femur portion including a femur attachment structure; a tibia portion including a tibia attachment structure; a coupling section formed on the femur portion and a coupling section formed on the tibia portion. The coupling sections are pivotably connected to one another about a prosthesis pivot axis that extends in the installed position of the endoprosthesis horizontally from medial to lateral. A locking element is moveable between locking and release positions. In the locking position the locking element rigidly locks the coupling sections in a predefinable pivot position. In the release position the coupling sections are pivotable relative to one another about the prosthesis pivot axis. A retaining and return means and an unlocking mechanism are provided. The retaining means forces the locking element into the locking position. The unlocking mechanism moves the locking element into the release position.

Abstract: Apparatus and methods for replacing a knee joint with an implant prosthesis are described. The method includes distracting the knee, locating the pre-diseased joint line of the knee and referencing cuts to the femur and tibia in the coronal plane relative to the joint line. The method further comprises determining the posterior slope of a cut to the tibia in the sagittal plane such that the gaps between the tibia and femur in extension and flexion are substantially equal. Apparatus for use in the method is described, including a distractor for distracting the joint, a joint level finder for finding the pre-diseased joint line and a flexion gap optimisation device.

Abstract: A bone chisel for creating a protrusion bearing cruciate ligament attachments from an upper side of a tibia head, which has a blade that encloses an area of a projection in a U-shape to a front with a transverse wall and to a side with side walls, and which has a cutter. A guide rod extended parallel to a driving direction of the bone chisel is mounted on a side of the bone chisel formed by the transverse wall, which guide rod is displaceably mounted in a direction of the guide rod in a guide head, which can be affixed on a front side of the tibia head.

Abstract: A bone replacement endoprosthesis has a metallic support structure, at least part of the surface of which is galvanically silvered. Beneath the silver layer a bond layer is provided which can comprise gold.