Abstract: Knee-joint prosthesis for permanent anchoring in the bone tissue of a knee-joint in the human body, consisting of a femur part, which comprises an articulation element (8) with a convex joint surface (20), an elongate intermediate element (7) with a first side, intended to bear against a surface of the bone tissue, and a second, opposite side intended to bear against an inner surface of the articulation element, which is arranged securely on the intermediate element by means of a positive locking. An anchoring element intended to be introduced into a recessed channel in the bone tissue and to be connected to this for anchoring the intermediate element and, thus, also the articulation element in the femur.

Abstract: The invention relates to an arrangement for fixing a knee-joint in connection with prosthetic surgery. The arrangement provides for a fixing of the operated knee-joint relative to a reference, which is represented by the operating table. The purpose is to positionally control, with high precision, measuring and cutting instruments in the prosthesis operation. The arrangement includes an alignment instrument (11) for aligning and fixing both the femur (66) and tibia (21) relative to a reference axis in both the frontal plane and the sagittal plane, which alignment instrument comprises a fixture (4) for the trunk. The fixture is adjustable and can be locked in selected positions by displacement transverse to the reference axis. The alignment instrument also comprises a further fixture for fixing the knee-joint (20, 22) and tibia (21). The arrangement moreover comprises a positional control unit for positional control of measuring and cutting instruments.

Abstract: This invention relates to a joint prosthesis for permanent anchorage in the bone tissue of a joint in a human body, for instance a knee joint. The joint prosthesis comprises an anchorage device (3, 4; 7-10, 11) disposed to be implanted into the bone tissue at a first operation so that it remains in unloaded condition during a healing phase during which the function of the joint is not prevented and an articulation device (5, 6; 13, 12) which is arranged to be connected to the anchorage device only at a second operation after the said healing phase.

Abstract: This invention relates to a joint prosthesis for permanent anchorage in the bone tissue of a joint in a human body, for instance a knee joint. The joint prosthesis comprises an anchorage device (3, 4; 7-10, 11) disposed to be implanted into the bone tissue at a first operation so that it remains in unloaded condition during a healing phase during which the function of the joint is not prevented and an articulation device (5, 6; 13, 12) which is arranged to be connected to the anchorage device only at a second operation after the said healing phase.

Abstract: An artificial menisco-tibial joint for a knee joint prosthesis of the kind which includes at least one tibial component on which the meniscus is movably disposed. The meniscus has a largely flat sliding surface against the tibial condyle which is provided with steering means imparting to the meniscus an ability to move in all directions along the tibial condyle. The steering means are so disposed that they limit the magnitude of the movement. The steering means consist preferably of two locating pins situated at a distance from each other which interact each with its own running track in the tibial condyle so that the meniscus, apart from a movement largely forwards and rearwards along the tibial condyle, is also imparted a sideways movement. Alternatively, the steering means consist of a posterior edge on the metal socket attached to the tibia.