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Abstract

The metallic inner shell (1) is guidable into the inner hollow volume of an outer shell (2) and fastenable to the outer shell (2) with the fastening element (8). A two-part hip joint socket (3) is thus produced. To achieve this, support regions of the inner shell (1) are approximately positioned into a groove (11) of the outer shell (2) and, from there, the inner shell (1) is moved into the outer shell (2) via a pivotal movement so that the support regions completely seat into the groove (11) and the fastening element (8) adopts the position shown. The intermediate volume between the inner shell (1) and the outer shell (2) thus narrows in the direction of taper (13) so that the fastening element (8), when tightened in the direction (13), wedges itself with its head (9) between the boundary surface (1i) of the inner shell (1) and the groove (11) of the outer shell (2). Play between the inner thread (7a) and the outer thread (8a) is preferably provided so that, when the fastening element (8) is tightened, the force transmission region (9b) of the head (9) seats against the boundary surface (1i) of the inner shell (1) and the force transmission region (9a) seats against the groove (11) of the outer shell (2). The inner shell (1) thus lies wedged in the outer shell (2) due to the fact that the fastening element (8) transmits a radially oriented force between the inner shell (1) and the outer shell (2).

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