title: Long lasting outcome of hydroxyapatite-coated implants in primary knee arthroplasty: a continuous series of two hundred and seventy total knee arthroplasties at fifteen to twenty two years of clinical follow-up.
abstract: OBJECTIVE
  This study is a long-term review of an hydroxyapatite (HA)-coated knee prosthesis. Our aim was to confirm that excellent previously reported results with HA knees could stand the test of time at the 15-year milestone.
  
  
  METHODS
  A total of 270 cruciate retaining HA-Omnifit knees, implanted in the same institution by a single surgeon with the same surgical procedure, were reviewed at 15-22 years of clinical follow-up (75 knees partially-coated and 195 fully-coated).
  
  
  RESULTS
  At review, IKS mean values were 95.6 points for knee score and 91.19 points for function score. Radiological review confirmed an excellent long-lasting fixation over years in the long run. Taking implant failure as the end-point, the survival rate was 97.1% at 20 years.
  
  
  CONCLUSIONS
  Our results were as good, and often better, than the best cemented or porous published studies. These very encouraging results at 15-22 years make us very confident in the ultimate outcome of bioconductive coatings in knee arthroplasty.
authors.affiliation: Clinique Médico-Chirurgicale, Orthopaedic Reconstructive Surgery, 62700, Bruay-Labuissière, France, jae@orthowave.net.
authors.forename: Jean-Alain
authors.initials: JA
authors.lastname: Epinette
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D001672:Biocompatible Materials; D017886:Durapatite; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D053208:Kaplan-Meier Estimate; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D007720:Knee Prosthesis; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D011475:Prosthesis Failure; D011859:Radiography; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D017886:Durapatite