Acetabular cup and polyethylene bearing and acetabular cup assembly for hip joint prosthesis

摘要

The present invention relates to hip acetabular cup assembly for use with polyethylene bearings , in particular, receiving groove is formed, the female taper is formed on the inner wall, such that the projections communicate with the recess groove is formed, the projection and the cup is placed inside the fitting groove is formed so that the groove, is mounted in the mounting groove , the number of taper is formed on the outer peripheral surface, a projection to be inserted into the groove and the projection formed by said projection includes a polyethylene bearing fitting protrusions are formed to be fitted in the fitting groove, firmly fixed to the bearing of the polyethylene in the cup providing a coupling structure, yet which can not form a groove (recess) additionally along the acetabular cup to prevent escape of the inner circumference of the bearing as polyethylene, improving the strength of the acetabular cup and to increase the contact area between the cup and bearing relates to the hip cup assembly. ;