Abstract
Aims: The purpose of this study is to review eight to eleven year results of a consecutive series of primary hybrid total hip arthroplasties. Methods: 193 patients (197 hips) received a cemented, polished, collarless, femoral component (Ra=1) in association with an uncemented acetabular component (166 grit-blasted titanium ßexible, 17 Ti mesh, and 14 Standard porous cups). Results: Mean age at surgery was 69.5 years (51–90). Most frequent diagnosis was osteoarthritis. Average follow-up was 9.2 years (8.5 to 11.2). 21 patients (23 hips) were lost to follow-up. 24 patients (25 hips) died prior to eight-years and none had undergone revision. Two femoral components, the only two with Grade D cement mantles, were revised for aseptic loosening at 23 and 111mos. One Ti mesh socket was revised for catastrophic poly wear at 113m and one ßexible cup for dislocation at 111m. The remaining 146 stems and cups were available for minimum 8year clinical review. 62 underwent complete radiographic review. Conclusions: Post-op Harris score was 89.3 (68–100). Pain relief was good or excellent in 95% of patients. X-rays revealed 1–2mm of femoral subsidence in 6 hips. Two cases of proximal (zones 7 and 1) femoral osteolysis were identiþed. A cemented polished femoral component and an uncemented acetabulum provide excellent clinical and radiographic results at average 9y follow up. Continued success appears likely in the absence of osteolysis or cement bone demarcation.
Theses abstracts were prepared by Professor Dr. Frantz Langlais. Correspondence should be addressed to him at EFORT Central Office, Freihofstrasse 22, CH-8700 Küsnacht, Switzerland.
