Meta-analysis Of Clinical Outcomes After Computer-assisted Total Knee Arthroplasty As Compared With Traditional Techniques

Objective:To evaluate the clinical outcomes between the computer navigation and conventional methods for total knee arthroplasty through meta-analysis.Methods:We retrievedPUBMED,CNKI,Springer Link,and other databases for literatures concerning randomized controlled trial of clinical outcomes of computer-assisted navigation and conventional total knee arthroplasty published from January 1~stt 2007 to May 1~stt 2017.The related data were selected in standard of randomized controlled trials,interventions and other inclusion criteria;The literatures did not meet the inclusion criteria were ruled out.the data were analyzed by Manager Review 5.0.Results:15 randomized controlled trials were eligible for Meta-analysis.The meta-analysis did not find a significant difference in the coronal femoral component alignment,malalignment for coronal femoral component of>3°,axial(rotational)alignment of the femoral component,malalignment for axial femoral component of>3°,sagittal femoral component alignment at>3°malalignment,coronal tibial component alignment,KSFS scores,hemorrhage volume and the rates of complications between both groups;There was obvious difference in operating time[MD=13.4,95%CI(9.40,16.67),P<0.00001];Compared with conventional groups,patients in the computer navigation group had a significantly lower risk of lower limbs mechanical axis,the mechanical axis alignment at>3°malaligment,both coronal and sagittal tibial component alignment at>3°malalignment,sagittal tibial component alignment,the KSS scores and the range of motion(ROM).Conclusion:The computer navigation could improve the alignment of the component position and the range of motion,it's propitious to the postoperative knee function evaluation.Although the computer navigation prolong the operating time,there is no obvious difference in hemorrhage volume and the rates of complications between both groups.