title: Performance of Non-Cemented, Hemispherical, Rim-Fit, Hydroxyapatite Coated Acetabular Component.
abstract: The purpose of this study was to assess the durability of a non-cemented, hemispherical rim-fit, hydroxyapatite coated cup with a highly cross-linked polyethylene in 223 total hip arthroplasties. At 6-years follow-up (range, 5-9), there were no cup revisions for osteolysis or loosening. Radiologic evidence of osseointegration was based on presence of Stress Induced Reactive Cancellous Bone and radial trabeculae, seen in 47% and 93% of cups, respectively; both were most prevalent in Zone 1. There was no interference demarcation in any zones. Two cups were revised (0.9%): one for dislocation and another for infection. The Kaplan-Meier survivorship for cup revision for any failure (infection, dislocation) was 99% and for mechanical failure (osteolysis, loosening) was 100%. This design has excellent safety, efficacy and durability.
authors.affiliation: Active Orthopedics and Sports Medicine, Hackensack University Medical Center, Hackensack, New Jersey.
authors.forename: Thomas K
authors.initials: TK
authors.lastname: John
authors.affiliation: Weill Cornell Medical College, Hospital for Special Surgery, New York, New York.
authors.forename: Gaurav
authors.initials: G
authors.lastname: Ghosh
authors.affiliation: Hospital for Special Surgery, New York, New York.
authors.forename: Chitranjan S
authors.initials: CS
authors.lastname: Ranawat
authors.affiliation: Hospital for Special Surgery, New York, New York.
authors.forename: Amar S
authors.initials: AS
authors.lastname: Ranawat
authors.affiliation: NYU Langone Medical Center, Hospital for Joint Disease, New York, New York.
authors.forename: Morteza
authors.initials: M
authors.lastname: Meftah
mesh_terms: D000077:Acetabulum / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D017886:Durapatite; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D020959:Polyethylene; D011474:Prosthesis Design; D012086:Reoperation; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D020959:Polyethylene; D017886:Durapatite
keywords: hemispherical; hydroxyapatite coated; non-cemented; rim-fit; total hip arthroplasty