Joint prosthesis, use of such and a method for the application of a joint prosthesis
OwnerPer-Ingvar Branemarkinventor
Life of this patent
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Abstract
The invention relates to a joint prosthesis comprising a first anchoring element (1a), a second anchoring element (1b) and a joint body (9) of an elastic material. The joint body (9) is attached to the two anchoring elements (1a1b). These are arranged to be secured into a respective bone having a respective anchoring axis (A, B). According to the invention, the anchoring axes (1a, 1b) are arranged so that they do not coincide with each other when the joint prosthesis is in an unloaded state. The invention also relates to a use of the invented joint prosthesis as well as a method for the application of a joint prosthesis.
Claims14
Joint prosthesis comprising a first anchoring element a second anchoring element and a joint body which joint body is of an elastic material and arranged so that the joint prosthesis is deflectable at least in a first plane of bending, and which joint body is attached to said first and second anchoring elements, each of which anchoring elements are arranged to be secured into a respective bone having a respective anchoring axis running in the longitudinal axis of the respective bone, which anchoring axes do not coincide with each other when the joint prosthesis is in an unloaded state characterized in that the joint body is arranged so that the joint prosthesis is deflectable also in a second plane of bending, perpendicular to said first plane of bending, the moment of resistance of the joint body for bending in the first plane of bending being smaller than the moment of resistance thereof in the second plane of bending.
A method related to the application of a joint prosthesis of a kind including an elastic joint body attached to a first and a second anchoring element, whereby the anchoring elements are secured to a respective bone and having a respective anchoring axis running in the longitudinal axis of the respective bone, which anchoring axis do not coincide with each other when the joint prosthesis is in an unloaded state and arranging the joint body such that the joint prosthesis is deflectable at least in a first plane of bending characterized by arranging the joint body so that the joint prosthesis is deflectable also in a second plane of bending, perpendicular to said first plane, the moment of resistance of the joint body for bending the first plane of bending being smaller than the moment of resistance thereof in the second plane of bending.
Dependencies are inferred from the claim text.