title: Comparative flexion after rotating-platform vs fixed-bearing total knee arthroplasty.
abstract: A retrospective review of rotating-platform (n = 113) and fixed-bearing (n = 100) total knee arthroplasties at a minimum 2-year follow-up was performed. All patients in both groups in this study had osteoarthritis and underwent surgery by 1 of the 2 senior authors at 1 of 2 institutions. A cruciate-retaining total knee arthroplasty was implanted with patellar resurfacing in all cases. The only difference between the 2 groups was the design of the tibial bearing and its tibial tray. Through minimization of confounding variables relating to pathology, surgeon, institution, soft-tissue balancing, and type of prosthesis, this study isolates articular design as a variable. We could not demonstrate any significant difference in knee flexion after either fixed-bearing or rotating-platform cruciate-retaining total knee arthroplasty.
authors.affiliation: Melbourne Orthopedic Group, Windsor, Australia.
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Evans
authors.forename: Eric M
authors.initials: EM
authors.lastname: Parsons
authors.forename: Richard D
authors.initials: RD
authors.lastname: Scott
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Thornhill
authors.forename: David
authors.initials: D
authors.lastname: Zurakowski
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D011474:Prosthesis Design; D012189:Retrospective Studies; D012399:Rotation