| abstract |
Total hip prosthesis of the type comprising an acetabular implant consisting of a hemispherical shell (1) comprising on its outer wall, in the part close to the equator, a helical and spiral thread, leaving free at the top of the half sphere a upper cap (19), with properties on the one hand of self-tapping and on the other hand of self-tapping, thus allowing an attack of the implantation medium for the insertion and the passage of the threads on the one hand in the direction of implantation and also in the direction of withdrawal. |