| abstract |
A joint prosthesis has two jointable, interacting prosthesis halves (1, 10), each with an anchoring shaft (4, 13) for anchoring in a bone facing the joint prosthesis. The first half of the prosthesis (1) has an essentially spherical head (2) which is provided with diametrically opposed flats (3b) for joining it together with the second half of the prosthesis (10). The second prosthesis half (10) has a socket (11) which is essentially spherical cap-shaped, the height of which is greater than the sphere radius and which is provided with a cutout for joining the two prosthesis halves (1, 10) in an assembly position. For joining, the two prosthesis halves (1, 10) are aligned in the assembly position and, after being joined, brought into an active position by rotating one half of the prosthesis (1, 10). In this operative position, the joint prosthesis can be subjected to tensile loads in a work area. Such a joint prosthesis minimizes the risk of luxation compared to known joint prostheses, while at the same time ensuring high mobility. |