title: Revision of a BFX total hip replacement stem using a Kyon stem and a head adaptor in two dogs.
abstract: OBJECTIVE
  To report revision of BFX cementless press-fit stem loosening with a Kyon cementless stem and a head adaptor in two dogs.
  
  
  METHODS
  Total hip arthroplasty stem revision was performed in two dogs with loosening of a previously implanted Biomedtrix press-fit BFX stem. Both dogs had a well-integrated BFX cup and single stage revision was performed using a standard Kyon stem and a head adaptor in order to couple with a 17 mm head and maintain the BFX cup.
  
  
  RESULTS
  Revisions resulted in a stable functional prosthesis with successful bone integration at the one-year postoperative re-evaluation.
  
  
  CONCLUSIONS
  Use of a Kyon stem with a head adaptor may be a successful option to provide immediate stem stability for revision of a loosened BFX stem with a properly osseointegrated cup.
authors.affiliation: Luca Vezzoni, Clinica Veterinaria Vezzoni, Via Massarotti 60/A, 26100 Cremona, Italy, Phone: +39 0372 234 51, E-mail: luca@vezzoni.it.
authors.forename: Luca
authors.initials: L
authors.lastname: Vezzoni
authors.forename: Sara
authors.initials: S
authors.lastname: Bazzo
authors.forename: Aldo
authors.initials: A
authors.lastname: Vezzoni
mesh_terms: D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000662:veterinary*; D001843:Bone Cements; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D004867:Equipment Design / Q000662:veterinary; D005260:Female; D006622:Hip Prosthesis / Q000662:veterinary*; D007794:Lameness, Animal / Q000601:surgery; D011475:Prosthesis Failure; D012086:Reoperation / Q000662:veterinary
chemical_list: D001843:Bone Cements
keywords: Stem loosening; Zurich; arthroplasty; aseptic; dog; subsidence