title: The Thrust Plate Hip Prosthesis: A Follow-Up of 15-20 Years With 102 Implants.
abstract: Between November 1992 and January 1999, a cohort of 102 thrust plate hip prostheses was implanted.
  
  
  
  We now clinically and radiologically evaluate the remaining 73 prostheses with a mean follow-up of 17.2 years.
  
  
  
  The Harris Hip Score increased from 51.4 points preoperatively to 94.3 points at the time of this follow-up. No further changes in the radiologic findings occurred since the first follow-up, published in 2005, conducted 2-8 years after implantation. Within 15 to 20 years after primary implantation of the 102 prostheses, 6 aseptic loosenings occurred, which correspond to a cumulated survival rate of 94.7% at 17 and 91.8% at 18 years.
  
  
  
  Although the thrust plate hip prostheses is no longer marketed, the biomechanical behaviour of this unique, clinically successful prosthesis deserves attention.
authors.affiliation: Department of Orthopaedic Surgery, Canton's Hospital Graubünden, Chur, Switzerland.
authors.forename: Maja
authors.initials: M
authors.lastname: Kaegi
authors.affiliation: Hirslanden, Klinik Birshof, Münchenstein, Switzerland.
authors.forename: Martin L
authors.initials: ML
authors.lastname: Buergi
authors.affiliation: Winterthur, Switzerland.
authors.forename: Hilaire A C
authors.initials: HA
authors.lastname: Jacob
authors.affiliation: Department of Orthopaedic Surgery, Canton's Hospital Graubünden, Chur, Switzerland.
authors.forename: Heinz H
authors.initials: HH
authors.lastname: Bereiter
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001696:Biomechanical Phenomena; D001860:Bone Plates; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D016896:Treatment Outcome
keywords: Harris Hip Score; hip prosthesis for younger patients; long-term follow-up; survival rate; thrust Plate Prosthesis