title: Ten-Year Outcome Comparison of the Anatomical Graduated Component and Vanguard Total Knee Arthroplasty Systems.
abstract: The development of a new total knee system as a successor prosthesis in total knee arthroplasty (TKA) requires clinical outcome improvement. 10,843 TKAs were performed of which 9169 utilized the Anatomical Graduated Component (AGC) and 1674 utilized the Vanguard prosthesis (both Biomet, Warsaw, IN). Survival rates at ten years postoperatively for the AGC and Vanguard were 98.7% and 98.4% (P=.4897) respectively. The top reasons for component failure were loosening (AGC: 0.29%, Vanguard: 0.30%), polyethylene wear, and instability (AGC: 0.13%, Vanguard: 0.12%). These results reveal similar outcomes in both designs, with relatively few revisions and high survival rates at ten years postoperatively.
  
  
  CONCLUSIONS
  This abstract offers data concerning the usefulness of the Vanguard Total Knee System as a successor to the Anatomical Graduated Component.
authors.affiliation: Center for Hip and Knee Surgery, St. Francis Hospital, Mooresville, Indiana.
authors.forename: Philip M
authors.initials: PM
authors.lastname: Faris
authors.affiliation: Center for Hip and Knee Surgery, St. Francis Hospital, Mooresville, Indiana.
authors.forename: Merrill A
authors.initials: MA
authors.lastname: Ritter
authors.affiliation: Center for Hip and Knee Surgery, St. Francis Hospital, Mooresville, Indiana.
authors.forename: Kenneth E
authors.initials: KE
authors.lastname: Davis
authors.affiliation: Center for Hip and Knee Surgery, St. Francis Hospital, Mooresville, Indiana.
authors.forename: Hana M
authors.initials: HM
authors.lastname: Priscu
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D016896:Treatment Outcome
chemical_list: D020959:Polyethylene
keywords: 10year follow-up; AGC: Anatomical Graduated Component; prosthesis survivorship; total knee arthroplasty; vanguard prosthesis