Joint endoprosthesis, especially hip joint prosthesis

Abstract

Abstract The shaft widens conically from the distal free end and consists of a main part and a lateral, wedge-shaped counterpart which is longitudinally displaceable on the main part. In the case of cementless anchoring in the bone, or at least anchoring with a small amount of cement, it should be possible, inter alia, for hard impacts to be kept away from the shaft anchoring and for any loosening of the shaft to be automatically counteracted. For this purpose, the counterpart (3) is under a pressure, acting in the direction of the free end, from spring elements (42, 43) supported on the main part (2) and is releasably locked in its initial position with respect to the main part (2). In addition, the wedge-shaped counterpart (3) should be guided on the main part (2) and should be enclosed laterally and on both sides by a covering splint (4). <IMAGE>

Inventors

• 👤 Ivica Jerkovic

Bibliographic Details