Fixation strength of a polyetheretherketone femoral component in total knee arthroplasty

The initial fixation of the femoral component after total knee arthroplasty (TKA) is an important outcome measure for the success of the procedure. The research and development in cementless TKA is focused on primary stability through mechanical fixation (e.g. press-fit or pin/screw fixation) to allow the biological process of bone ingrowth to provide long-term fixation [1 –5]. In cemented fixation there are two interfaces at which failure can occur; the cement–bone and cement–implant interface. Studies that focused on the integrity of the cement–bone interface concluded that of the two this one was the most vulnerable, especially when the counterface was cort ical bone [6,7].
Source: Medical Engineering and Physics - Category: Biomedical Engineering Authors: Tags: Technical note Source Type: research