title: Comparison of fixed and mobile-bearing total knee arthroplasty at a mean follow-up of 116 months.
abstract: BACKGROUND
  The superiority of mobile-bearing total knee arthroplasty implants over fixed-bearing implants, or vice versa, is still debated.
  
  
  METHODS
  A series of patients with similar clinical and radiographic characteristics were treated consecutively with 100 fixed-bearing followed by 100 rotating-platform implants. Patients underwent prospective clinical and radiographic evaluation.
  
  
  RESULTS
  The mean duration of follow-up was 116 months (range, sixty-one to 144 months). Clinical, radiographic, and implant survival outcomes were compared. No significant differences between the mobile-bearing and fixed-bearing groups were found with respect to the clinical outcome or cumulative implant survival at the time of the latest follow-up. Three of the fixed-bearing implants and one of the rotating-platform implants had required revision surgery.
  
  
  CONCLUSIONS
  No differences between mobile-bearing and fixed-bearing designs were demonstrated at a mean of 116 months of follow-up.
authors.affiliation: Department of Orthopedics and Traumatology, AO CTO/M. Adelaide Hospital, Torino, Italy. abistolfi@cittadellasalute.to.it
authors.forename: Alessandro
authors.initials: A
authors.lastname: Bistolfi
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Massazza
authors.forename: Gwo-Chin
authors.initials: GC
authors.lastname: Lee
authors.forename: Davide
authors.initials: D
authors.lastname: Deledda
authors.forename: Paola
authors.initials: P
authors.lastname: Berchialla
authors.forename: Maurizio
authors.initials: M
authors.lastname: Crova
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000503:physiopathology / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D010020:Osteonecrosis / Q000503:physiopathology / Q000601:surgery; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D016896:Treatment Outcome