Fifteen-year survivorship of a collarless, cemented, normalized femoral stem in primary hybrid total hip arthroplasty with a modified third-generation cement technique

• Published in: The Journal of arthroplasty Vol. 18; no. 7 Suppl 1; pp. 86 - 94
• Main Authors: Rasquinha, Vijay J, Dua, Vipul, Rodriguez, Jose A, Ranawat, Chitranjan S
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.10.2003
• Subjects: Aged; Cementation; cemented; Female; femoral; Hip Prosthesis; Humans; Male; Middle Aged; normalized; Omnifit; Prospective Studies; Prosthesis Design; Reoperation; stem; third-generation; third-generation; cemented; Omnifit; femoral; normalized; stem
• ISSN: 0883-5403; 1532-8406
• DOI: 10.1016/S0883-5403(03)00300-0

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.