INTERMEDIATE CLINICAL FOLLOW-UP OF A DUAL-RADIUS ACETABULAR COMPONENT

In this study, 92 primary total hip arthroplasties were performed in 8 3 patients using a porous-coated, dual-radius, cementless, acetabular component. All hips underwent line-to-line dome reaming with press-fit implantation that was judged to have complete bone contact. This acet abular shell provides a l-mm oversized peripheral rim, which adds exce llent initial stability while allowing complete bone contact in all hi ps. No fractures occurred. Ln 83% of hips, adjunctive screw fixation w as not necessary. At a minimum of 4 years, follow-up, there were no re visions, no acetabular migration, one case of acetabular erosion consi stent with osteolysis, and the average Harris Hip Score was 95. The de sign features of this new acetabular component have provided excellent fixation with complete initial bone contact, resulting in satisfactor y intermediate clinical and radiographic results. The design provides excellent peripheral stability and complete bone contact.