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 .
Greater satisfaction in older patients with a mobile-bearing compared with fixed-bearing total knee arthroplasty.
A prospect i ve , r and omized , controlled , double-blind trial was performed to compare outcomes between 61 mobile- and 58 fixed-bearing primary TKAs in patients aged 70 years or older . At last follow-up , no difference was found for Knee Society score . The mobile-bearing group had greater knee flexion at 3 and 6 months , but this was similar at 2 years . The patient satisfaction was better in the mobile-bearing group than in fixed-bearing group , with respect to Knee Society functional score , Western Ontario MacMasters University score , Short-Form 12 score , and visual analog scale score . A multivariate analysis confirmed that the only independent factors predictive of postoperative quality of life were early postoperative flexion . We believe that better perception and satisfaction with mobile-bearing in older patients was due to the earlier regain of their knee flexion . Our results justify the use of mobile-bearing design in the older population
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 .