Patent ID: 7553332
Filing Date: 2009-06-30
Classification: A61F

Abstract:
1. An acetabular implant comprising an acetabular cup defining an internal cavity, the acetabular cup having a spikeless hemispherical outer surface, a plurality of circumferential grooves defined in the spikeless hemispherical outer surface, spaced-apart cavities defined along each of said circumferential grooves, the acetabular cup having a frustoconical internal surface defining a taper towards a bottom of the acetabular cup, at least two ribs provided on said frustoconical internal surface, and a conical core insertable in the internal cavity, the conical core having a frustoconical outer surface having a taper greater than the taper of said frustoconical internal surface of said acetabular cup, the at least two ribs on the frustoconical internal surface of the acetabular cup defining at least two insertion increments of the conical core in the acetabular implant, each increment corresponding to a different degree of expansion of the acetabular cup.