title: Total knee replacement system with a ceramic femoral component versus two traditional metallic designs: a prospective short-term study.
abstract: OBJECTIVE
  To compare the short-term outcome of the Multigen Plus system using a symmetric ceramic femoral component with that of 2 metallic total knee replacement (TKR) systems.
  
  
  METHODS
  60 patients (62 knees) with osteoarthritis or rheumatoid arthritis underwent primary TKR using the Genia system (n=20), the Multigen Plus system (n=17), and the Multigen Plus system with a ceramic femoral component (n=25). Outcome was evaluated pre- and post-operatively (at 3, 12, and 24 months) using the Hospital for Special Surgery (HSS) score, the Western Ontario and McMaster Universities (WOMAC) score, and the Short-Form 36 (SF-36) score.
  
  
  RESULTS
  The 3 groups did not differ significantly at all 4 time points in terms of the HSS score, WOMAC score, and SF-36 score. The range of motion was significantly less in patients treated with the Genia system. Postoperatively, the HSS and WOMAC scores improved significantly in all 3 groups, whereas the SF-36 score improved significantly (at 12 and 24 months) only in patients treated with the Multigen Plus system with a ceramic femoral component. The implant position in most patients was optimal. All radiolucent lines were within 1 mm and did not progress.
  
  
  CONCLUSIONS
  The short-term outcome of the 3 TKR systems was comparable. Ceramic femoral components performed comparably to traditional metallic designs.
authors.affiliation: Department of Orthopaedics, University Medicine Rostock, Rostock, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Bergschmidt
authors.forename: Rainer
authors.initials: R
authors.lastname: Bader
authors.forename: Daniel
authors.initials: D
authors.lastname: Kluess
authors.forename: Carmen
authors.initials: C
authors.lastname: Zietz
authors.forename: Benjamin
authors.initials: B
authors.lastname: Schwemmer
authors.forename: Guenther
authors.initials: G
authors.lastname: Kundt
authors.forename: Wolfram
authors.initials: W
authors.lastname: Mittelmeier
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D002516:Ceramics; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000503:physiopathology / Q000601:surgery*; D011446:Prospective Studies; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D013997:Time Factors; D016896:Treatment Outcome
keywords: arthroplasty, replacement, knee; ceramics; hypersensitivity