177 Robotic Assisted Versus Conventional Unicompartmental Knee Arthroplasty: A Systematic Review and Meta-Analysis

Abstract

Abstract Aim To compare the robotic-assisted unicompartmental knee arthroplasty (UKA) with conventional UKA. Method We systematically searched on four databases till September 2021. The outcomes were pooled as mean difference (MD) or standardized mean difference (SMD) or risk ratio (RR), and 95% confidence interval. We used RevMan to perform the analysis. Results There were 22 included studies. There were no significant differences between the robotic-assisted UKA and the conventional one in satisfaction rate (RR=1.05, 95% CI [0.98, 1.14], p=0.19), complication rate (RR=0.62, 95% CI [0.32, 1.19], p=0.15), and range of motion (MD= -0.23, 95% CI [-5.76, 5.30], p=0.93). However, robotic-assisted UKA showed significant favouring in the outliers of limb alignment (RR= 0.46, 95% CI [0.29, 0.74], p=0.001). On the other hand, the conventional UKA had better surgical time than the robotic assisted one (MD=20.89, 95% CI [11.87, 29.90], p<0.00001). Conclusions There were mainly no significant differences between robotic-assisted UKA and the conventional one in several outcomes such as the satisfaction rate, complication rate, and others. However, robotic-assisted UKA significantly favoured outliers of tibial alignment, and outliers of limb alignment, but prolonged surgical time than the conventional group.