Fifteen-year survivorship of a collarless,cemented, normalized femoral stem in primary hybrid total hip arthroplasty with a modified third-generation cement technique |
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Institution: | 1. Department of Orthopaedic Surgery, Hospital Universitario Vall d´Hebron, Universidad Autónoma de Barcelona, Barcelona, Spain;2. Reconstructive Surgery and Septic Division, Hospital Universitario Vall d´Hebron, Universidad Autónoma de Barcelona, Barcelona, Spain;3. Infectious Diseases Department, Hospital Universitario Vall d´Hebron, Universidad Autónoma de Barcelona, Barcelona, Spain;4. Microbiology Department, Hospital Universitario Vall d´Hebron, Universidad Autónoma de Barcelona, Barcelona, Spain;5. Hospital Universitario Vall d´Hebron, Barcelona, Spain |
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Abstract: | This prospective review aimed to evaluate 15-year survivorship of the collarless, third-generation cemented, normalized, Omnifit (Osteonics, Allendale, NJ) femoral stem in hybrid total hip arthroplasty (THA). Between January 1986 and June 1990, a single surgeon prospectively implanted 250 consecutive hybrid THAs (215 patients) using a modified third-generation cement technique in selected patients. A Harris-Galante (I or II) (Zimmer, Warsaw, IN) cementless shell with modular polyethylene (4150 resin) liners gamma-sterilized in air were implanted. Kaplan-Meier survivorship of the femoral or acetabular component with mechanical failure (revision for aseptic loosening) as the end-point was 100% ± 0% at 15 years. Wear couple exchange and bone grafting was performed in 1 case (0.4%) for progressive acetabular osteolysis. This report supports femoral component centralization and good cement mantle to ensure durability of the collarless, cemented, normalized femoral stem with a surface roughness of 30–40 microinches. |
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