title: Intermediate clinical follow-up of a dual-radius acetabular component.
abstract: In this study, 92 primary total hip arthroplasties were performed in 83 patients using a porous-coated, dual-radius, cementless, acetabular component. All hips underwent line-to-line dome reaming with press-fit implantation that was judged to have complete bone contact. This acetabular shell provides a 1-mm oversized peripheral rim, which adds excellent initial stability while allowing complete bone contact in all hips. No fractures occurred. In 83% of hips, adjunctive screw fixation was not necessary. At a minimum of 4 years, follow-up, there were no revisions, no acetabular migration, one case of acetabular erosion consistent with osteolysis, and the average Harris Hip Score was 95. The design features of this new acetabular component have provided excellent fixation with complete initial bone contact, resulting in satisfactory intermediate clinical and radiographic results. The design provides excellent peripheral stability and complete bone contact.
authors.affiliation: Department of Orthopaedic Surgery, New England Baptist Hospital, New England Baptist Bone & Joint Institute, Boston, Massachusetts 02120, USA.
authors.forename: G J
authors.initials: GJ
authors.lastname: Van Flandern
authors.forename: B E
authors.initials: BE
authors.lastname: Bierbaum
authors.forename: A H
authors.initials: AH
authors.lastname: Newberg
authors.forename: S L
authors.initials: SL
authors.lastname: Gomes
authors.forename: D A
authors.initials: DA
authors.lastname: Mattingly
authors.forename: P A
authors.initials: PA
authors.lastname: Karpos
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D020099:Coated Materials, Biocompatible; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D016062:Porosity; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D016896:Treatment Outcome
chemical_list: D020099:Coated Materials, Biocompatible; D011095:Polyethylenes