Migration of all-polyethylene compared with metal-backed tibial components in cemented total knee arthroplasty

This report has been verified by one or more authors of the original publication.

60 patients scheduled for total knee arthroplasty were randomized to either an all-polyethylene tibial component or metal-backed tibial component. Primary outcome was maximum total point motion of the tibial component over 2-year follow-up, while clinical scores and incidence of adverse events were secondary outcomes. Two-year maximum total point motion of the tibial component was significantly lower in the All-Poly group compared to the Metal-Backed group. Clinical scores, including the Knee Injury and Osteoarthritis Outcome Score, Knee Society Score, and the Forgotten Joint Score, did not significantly differ between groups after 2 years.