title: Total knee arthroplasty with mobile tibial weight-bearing: clinical evaluation after a minimum of five years of postoperative follow-up.
abstract: OBJECTIVE
  To evaluate the medium and long term results from total knee arthroplasty with rotating tibial weight-bearing.
  
  
  METHODS
  Between January 2000 and July 2007, 162 patients underwent total knee arthroplasty with mobile tibial weight-bearing. Among these, 96 were evaluated in a previous study with a mean follow-up of 4 years. In the present study, the same group was invited back for reassessment and the results were analyzed. Sixty-nine patients responded to this call (79 knees), and they were evaluated in accordance with the Knee Society Rating System (KSRS), after a mean follow-up of 8 years and 8 months (ranging from 5.5 and 13 years).
  
  
  RESULTS
  A mean KSRS score of 74.41 points was obtained, with good or excellent results.
  
  
  CONCLUSIONS
  The medium and long-term results from total knee arthroplasty with mobile tibial weight-bearing were good, and a mean score of 74.41 points in the Knee Society Clinical Rating System was attained.
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Luiz Gabriel Betoni
authors.initials: LG
authors.lastname: Guglielmetti
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Pedro Pereira
authors.initials: PP
authors.lastname: da Costa
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Ricardo
authors.initials: R
authors.lastname: de Paula Leite Cury
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Victor Marques
authors.initials: VM
authors.lastname: de Oliveira
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Nilson Roberto
authors.initials: NR
authors.lastname: Severino
authors.affiliation: Faculdade de Ciências Médicas da Santa Casa São Paulo (FCMSCSP) , São Paulo, SP, Brazil.
authors.forename: Osmar Pedro Arbix
authors.initials: OP
authors.lastname: de Camargo
keywords: Knee; Knee osteoarthritis; Knee prosthesis; Replacement arthroplasty