Patent ID: 6652590
Filing Date: 2003-11-25
Classification: A61F

Abstract:
A cementless total replacement of the human hip joint comprising an acetabulum, on the outer surface of which there is provided a self-drilling thread, a head, and a femoral component in the shape of a flat wedge, wherein the self-drilling thread comprises at least three independent teeth, the femoral component has an inner side, a lower part and a middle part and a substantially linear inner side in its lower and middle parts, and an asymmetrical tapering on the outer side of its lower part under an angle &ggr; equal to 20Â° to 70Â° in respect to the axis of the wedge, which ends in the pike of the wedge, and wherein that in the middle part, the femoral component has a trapezoidal shape with a wider upper basis continuously tied with the upper part which contains a convexly widened outer side and ends in a transitional part to the head, wherein there is provided at least on the lower part and on the middle part of the inner side of the femoral component at least one longitudinal groove, the width and depth of which are at least 0.5 mm each, and there is provided on at least one side surface of at least one of the middle part and the upper part of the femoral component at least one transversal rib having each of the height and width 1 mm minimum, which forms an angle &bgr; equal to 70Â° to 110Â° with the axis of the wedge.