Patent ID: 8828089

Claim:
An acetabular augment for compensating for a deficiency encountered in natural bone available at an implant site wherein, during a hip arthroplasty, the available natural bone is prepared so as to establish a prepared acetabulum for the reception of a conventional acetabular component having an outer surface with a conventional outer surface contour configuration, the prepared acetabulum having a contour configuration that extends along an acetabular envelope having a contour configuration complementary to the outer surface contour configuration of the conventional acetabular component and including a portion spaced from the available natural bone as a result of the encountered deficiency, the acetabular augment comprising: a buttress member having a buttress surface with a surface contour configuration complementary to the portion of the acetabular envelope spaced from the available natural bone; an affixation member having an affixation surface for affixing the affixation member to natural bone adjacent the prepared acetabulum; and a coupling arrangement for coupling the buttress member with the affixation member, affixed permanently at any selected one of a plurality of fixed angular positions relative to one another, the coupling arrangement including complementary coupling elements on the buttress member and on the affixation member for selective engagement to permanently affix the buttress member to the affixation member against movement of the buttress member relative to the affixation member when the buttress member and the affixation member are coupled at a selected one of the plurality of fixed angular positions, with the affixation surface permanently located at a corresponding selected angular position relative to the buttress surface so as to place the buttress surface in permanent secured juxtaposition with the acetabular envelope upon affixation of the affixation surface to the natural bone adjacent the prepared acetabulum, whereby the buttress surface will be located permanently to supplement the natural bone available at the prepared acetabulum for reception of the conventional acetabular component at the prepared acetabulum, with the outer surface of the acetabular component extending along the acetabular envelope, and the acetabular component supported by the available natural bone and the permanently secured buttress surface.