الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Background: Unicompartmental knee arthroplasty (UKA) is a bone and ligament-sparing technique that can restore Knee kinematics and function for osteoarthritis (OA) limited to one knee compartment.
Objectives: The aim of the study is a systematic review conducted to examine and compare the clinical complications, revision rates, reoperation rates and survivorship differences between fixed and mobile bearing designs in unicompartmental knee arthroplasty.
Patients and Methods: Randomized controlled trials, including cluster RCTs, controlled (non-randomized) clinical trials or cluster trials, prospective and retrospective comparative cohort studies, case series and case-control will be included in this study. Those -that reported clinical outcomes with MB and/or FB UKA- provided details on the number of implants, if it could be estimated, the revision rate (i.e. if the number of implant component years) could be calculated. Studies in English. Between 2000 till 2018.
Results: About 293 articles were found using search keywords. By filtration and screening of the title and exclusion of unrelated articles, about 169 articles were found. By applications of all inclusion and exclusion criteria, only 10 articles were fit to undergo this meta-analysis.
Conclusion: So this study showed no significant difference in clinical outcome, revision rates, reoperation rates and survivorship between mobile and fixed bearing UKRs. Also more investigations should be directed toward the use of highly cross linked PE or vitamin E polyethylene with mobile bearing surfaces as these surfaces are highly conforming which might decrease the amount of wear. Unfortunately we have some restrictions such as the diagnosis, activity level, operative side, population heterogeneity and surgical technique of the unicompartmental knee arthroplasty within the included studies might have affected the results. We are still in need for more, large, well-designed RCTs with a long follow-up to assess the clinical, radiological and kinematic outcomes of mobile versus fixed bearing UKR.