title: A titanium cementless calcar replacement prosthesis in revision surgery of the femur: 13-year experience.
abstract: From January 1987 through December 2000, 1,179 cementless calcar prostheses were implanted at the Texas Center for Joint Replacement. The prosthesis is titanium, has proximal circumferential plasma-spray coating, and is designed for proximal bone loading. The average follow-up for the entire series was 6.2 years, and the projected stem survivorship at 13 years is 95.2%. There have been 9 stem revisions for loosening. When mechanical loosening alone is evaluated, the projected stem survivorship is 99%. There have been 56 revisions in the entire series. Prosthetic survivorship for the entire patient population is projected at 93.6% at 13 years. There have been no cases of distal lysis or late loosening. None of the prostheses are classified as loose at this time, and none are classified as stable fibrous fixation.
authors.affiliation: Texas Center for Joint Replacement, Plano, Texas 75093-7732, USA. wchead@msn.com
authors.forename: W C
authors.initials: WC
authors.lastname: Head
authors.forename: R H
authors.initials: RH
authors.lastname: Emerson
authors.forename: L L
authors.initials: LL
authors.lastname: Higgins
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D014025:Titanium