Similarly , no difference was revealed between the groups for radiological outcomes or general health results .
Controversy exists regarding the clinical and radiological differences in outcomes between  fixed-bearing ( FB ) and mobile-bearing ( MB ) total knee arthroplasties ( TKAs ) at the mid- or long-term follow-up .
We therefore conducted a meta- analysis and systematic review of r and omized controlled trials ( RCTs ) that have evaluated FB and MB TKAs .
[Knee arthroplasty. Mobile- and fixed-bearing design].
After the introduction of  mobile-bearing knee arthroplasty  in the late 1970s , he benefits were discussed in comparison to the well-established modular fixed-bearing systems . The hypothetical advantages of mobile-bearing design s are the ability of axial rotation and a greater articular conformity , which reduces significantly fatigue failure of the polyethylene . Biomechanical analyses showed for each system characteristic features , which are not concordant with the aim of restoring normal knee kinematics . In both groups the long-term clinical results were excellent with 10-year survival rates of 95 - 98 % . Ligamentous stability and a perfect operative technique are key factors in mobile-bearing knee arthroplasty . Prospect i ve r and omized clinical trials are necessary to find answers concerning backside and volumetric polyethylene wear and the detrimental effects of wear particle size . Before this is accomplished , the indication for a  mobile-bearing knee arthroplasty  , especially in young patients , should be carefully considered in each case
Similarly , no difference was revealed between the groups for radiological outcomes or general health results .
Controversy exists regarding the clinical and radiological differences in outcomes between  fixed-bearing ( FB ) and mobile-bearing ( MB ) total knee arthroplasties ( TKAs ) at the mid- or long-term follow-up .
We therefore conducted a meta- analysis and systematic review of r and omized controlled trials ( RCTs ) that have evaluated FB and MB TKAs .