Abstract
Ninety-six patients were implanted with the Omnifit-HA femoral stem and the Omnifit-PSL porous-coated dual-radius acetabular shell (Stryker, Mahwah, NJ) and liners that were sterilized by γ-radiation in air. The mean age at the time of surgery was 52 years (range, 27-78 years), and male/female ratio was 54:42. The mean follow-up was 10.3 years (range, 7-12 years). The survivorship of the stem and cup was 100% and 90%, respectively. Four cups were revised for aseptic loosening, and 6 liners were exchanged. The mean polyethylene wear rate was 0.24 mm/y. Lysis was noted in 23% of the cups. No patient developed femoral lysis distally. This hydroxyapatite-coated stem continues to perform well and appears to protect against the migration of wear debris along the femoral stem.
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