Meta-analysis On The Efficiency Of Unicompartmental Knee Arthroplasty Versus Total Knee Arthroplasty For The Unicompartmental Knee Osteoarthritis

Objective: To compare the efficacy of unicompartmental knee arthroplasty and total knee arthroplasty systematically through meta-analysis.Methods: We thoroughly searched Pub Med?Library of Congress?LISTA?Web of Science?CNKI database in order to collect randomized controlled trials(RCT)and controlled clinical trials(CCT)from January 2011 to 2017 that are associated with comparison between UKA and TKA in treating unicompartmental knee osteoarthritis.After two researchers have separately included the literature in strict accordance with the criteria,meta analysis was carried on via Review Manager 5.0software.Results: 8 trials,including 2 RCT trials and 6 CCT trials,have been involved in the meta analysis,the total knee amounted to 945.It is demonstrated from the meta analysis that the difference between the HSS Score of UKA and TKA is not statistically significant[SMD=4.63,95%CI(-0.19,9.44),P>0.05],the similar result is also obtained in KSS scoring system[SMD=0.70,95%CI(-0.42,5.50),P>0.05].UKA outperforms TKA in the range of motion after operation[SMD=13.08,95%CI(11.04,15.12),P<0.00001],besides,patients who have undergone UKA will take shorter time when bend to 90 degrees after natural stretch comparing with TKA[SMD=13.08,95%CI(11.04,15.12),P<0.00001].Conclusion:The current results indicate that in the area of treating unicompartmental knee osteoarthritis,UKA gains advantage over TKA in range of motion and shorter recovery time,but in both KSS and HSS Score system,the difference between UKA and TKA is not notable.Nevertheless,confined to the quality and quantity of the included trials,more clinical trials or high quality systematic reviews are required to support our conclusion.