title: Echelon stems and primary total hip replacement surgery.
abstract: The Echelon Primary femoral stem is an extensively porous coated cylindrical cobalt chrome hip component. A prospective review of 392 Echelon stems revealed excellent survivorship of the stem, with a 99.3% survival rate for aseptic loosening and a 98.3% survival rate for revision for any reason at 8 years. Normalized Western Ontario and McMaster Universities Osteoarthritis Index and short-form health survey outcome scores were significantly improved and subsequently maintained after replacement, with 82% of patients obtaining a good or excellent result at the mean follow-up period. There have been no changes in manufacture or design of the stem during the review period.
authors.affiliation: Division of Orthopaedics, Department of Surgery, St. Michael's Hospital, 30 Bond Street, Toronto, ON, Canada M5B1W8.
authors.forename: Peter M
authors.initials: PM
authors.lastname: Lewis
authors.forename: Michael
authors.initials: M
authors.lastname: Olsen
authors.forename: Emil H
authors.initials: EH
authors.lastname: Schemitsch
authors.forename: James P
authors.initials: JP
authors.lastname: Waddell
mesh_terms: D000328:Adult; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000706:statistics & numerical data*; D005260:Female; D005264:Femoral Fractures / Q000453:epidemiology* / Q000601:surgery*; D006622:Hip Prosthesis / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000453:epidemiology* / Q000601:surgery*; D015995:Prevalence; D016896:Treatment Outcome; D055815:Young Adult