title: Hydroxyapatite-coated femoral stem survivorship at 10 years.
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 gamma-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.
authors.affiliation: Shiley Center for Orthopedic Research and Education at Scripps Clinic, Department of Orthopedic Surgery, La Jolla, California 92037, USA.
authors.forename: Gregory Y
authors.initials: GY
authors.lastname: Lee
authors.forename: Ajay
authors.initials: A
authors.lastname: Srivastava
authors.forename: Darryl D
authors.initials: DD
authors.lastname: D'Lima
authors.forename: Pamela A
authors.initials: PA
authors.lastname: Pulido
authors.forename: Clifford W
authors.initials: CW
authors.lastname: Colwell
mesh_terms: D000328:Adult; D000368:Aged; D001672:Biocompatible Materials; D017886:Durapatite; D005260:Female; D005269:Femur; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D013997:Time Factors
chemical_list: D001672:Biocompatible Materials; D017886:Durapatite