title: Normalized and proportionalized cemented femoral stem survivorship at 15 years.
abstract: We reviewed the clinical and radiographic results of a series of 215 consecutive hip arthroplasties in which a normalized, proportionalized, cemented femoral component was implanted. This component design may encourage more efficient force transmission from prosthesis to cement to bone and lessen hoop stresses and resultant interface failure. A total of 127 hips in 103 patients with a follow-up of 13 to 17 years (average, 14.8 years) were available for evaluation, which included survivorship analysis. An aseptic failure loosening rate of 3.9% at 15 years for this stem favorably compares with other reported series of first-generation and second-generation stems at similar follow-up. Excluding the 8 stems placed in varus, of which 3 required revision (failure rate, 37.5%), the series has a failure rate of 1.6%.
authors.affiliation: Department of Orthopaedic Surgery, New York University-Hospital for Joint Diseases, New York 10003, USA.
authors.forename: W L
authors.initials: WL
authors.lastname: Jaffe
authors.forename: C A
authors.initials: CA
authors.lastname: Hawkins
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001168:Arthritis / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D005269:Femur; D005271:Femur Head Necrosis / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007431:Intraoperative Complications; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011183:Postoperative Complications; D012189:Retrospective Studies