Fixed versus Mobile Bearing Medial UKA (Medial Unicondylar Knee Arthroplasty)

Abstract

tudies showed that there is no significant difference in clinical outcome between mobile and fixed bearing UKRs. The results of this comparative study may assist surgeons in their choice of bearing design in the unicompartmental knee arthroplasty. Some studies preferred mobile bearing design than fixed bearing design because the mobile bearing UKRs have lower wear rates of the PE insert than in fixed bearing designs (as MB designs have low contact pressures by increasing the tibial component contact area). (4,10,13,15) Furthermore some studies reviewed significant improvement in mobile bearing design UKA from pre-operative to final follow-up for the patients by showing high reoperation rates in fixed bearings than in mobile bearings.(23,24)