Meta-analyses showed no clinical ly relevant differences in terms of revision rates , clinical outcome scores or patient-reported outcome measures between MB and FB TKRs .
It appears that theoretical assumptions of superiority of MB over FB TKR are not borne out in clinical practice
Mobile-bearing ( MB ) total knee replacement ( TKR ) was introduced to reduce the risk of aseptic loosening and wear of polyethylene inserts .
However , no consistent clinical advantages of mobile- over fixed-bearing ( FB ) TKR have been found .
In this study we evaluated whether mobile bearings have an advantage over fixed bearings with regard to revision rates and clinical outcome scores .
Furthermore , we determined which modifying variables affected the outcome .
Comparison of mobile- and fixed-bearing cemented total knee arthroplasty.
Concern about polyethylene wear and related osteolysis after knee arthroplasty has developed in the last years . Mobile-bearing knee prostheses were design ed in order to reduce the influence of this critical factor on long-term success of total knee replacement . We present a prospect i ve study comparing clinical and radiological results with a mobile-bearing ( Ceragyr ) and a fixed-bearing knee prosthesis ( posterior stabilized Hermes ) . Clinical results did not show any significant differences in Knee Society scores . We found better results in the mobile-bearing group for pain scores and subjective preference , but the difference did not reach statistical significance . Within the time limits of this study , radiological analysis showed no osteolysis in either group , but longer follow-up will be needed to confirm this
Meta-analyses showed no clinical ly relevant differences in terms of revision rates , clinical outcome scores or patient-reported outcome measures between MB and FB TKRs .
It appears that theoretical assumptions of superiority of MB over FB TKR are not borne out in clinical practice
Mobile-bearing ( MB ) total knee replacement ( TKR ) was introduced to reduce the risk of aseptic loosening and wear of polyethylene inserts .
However , no consistent clinical advantages of mobile- over fixed-bearing ( FB ) TKR have been found .
In this study we evaluated whether mobile bearings have an advantage over fixed bearings with regard to revision rates and clinical outcome scores .
Furthermore , we determined which modifying variables affected the outcome .