title: Minimum 5-year follow-up for primary THA using a tapered, proximally coated cementless stem.
abstract: The purpose of this study was to assess the survivorship of a proximally coated, cementless femoral stem used for total hip arthroplasty at a minimum 5-year follow-up by assessing clinical outcomes and implant survival. A total of 936 primary total hip arthroplasties were performed in 854 patients by 3 high-volume surgeons between 2001 and 2007. Patients included 385 men and 469 women with a mean age of 56 years (range, 20-88 years) and a mean follow-up of 7 years (range, 5-11 years). The aseptic revision rate related to the femoral component was 0.3%. Three patients underwent revision of the femoral component. Mean postoperative Harris Hip Score improved to 91 points (range, 70-100 points). When stratified by primary cause of total hip arthroplasty, no differences were found in implant survivorship or postoperative Harris Hip Scores. With the exception of the 3 patients who underwent revision surgery, postoperative radiographic evaluation of the stems demonstrated no progressive radiolucencies, component malalignment, change in component position, or implant subsidence at most recent follow-up.These results are encouraging and indicate a 0.3% revision rate for the femoral component. The cause of primary total hip arthroplasty did not affect the clinical outcomes. These types of prostheses will provide patients with a stable implant that is expected to have excellent durability and longevity.
authors.affiliation: OrthoIndy, Greenwood, Indiana 21215, USA.
authors.forename: Frank R
authors.initials: FR
authors.lastname: Kolisek
authors.forename: Kimona
authors.initials: K
authors.lastname: Issa
authors.forename: Steven F
authors.initials: SF
authors.lastname: Harwin
authors.forename: Charles
authors.initials: C
authors.lastname: Jaggard
authors.forename: Qais
authors.initials: Q
authors.lastname: Naziri
authors.forename: Michael A
authors.initials: MA
authors.lastname: Mont
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000706:statistics & numerical data*; D002484:Cementation / Q000706:statistics & numerical data; D005260:Female; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009518:New York / Q000453:epidemiology; D011183:Postoperative Complications / Q000453:epidemiology*; D015995:Prevalence; D011475:Prosthesis Failure; D012086:Reoperation / Q000706:statistics & numerical data; D018570:Risk Assessment; D016896:Treatment Outcome