ROTARY JOINT PROSTHESIS HAVING A REINFORCED BEARING BUSH

摘要

The joint prosthesis comprises a distal component and a proximal component for anchoring to bones. A rotary bearing has a multi-layer bearing insert (4) having a sliding sleeve surrounding a pin (31) and a support sleeve that encloses sliding sleeve, which is fastened to the coupling piece (3) by a securing element. The securing element has an actuation unit within the support sleeve, which can be connected to the coupling piece so as to ensure tensile strength by two aligned bores in support sleeve and coupling piece. The coupling piece is attached to distal component and proximal component to form a flexion bearing around a first axis (34) and a rotary bearing formed by the pin and bearing bush (32) around a second axis oriented transversely to the first axis.