Meta-analysis Of Using Bipolar Versus Unipolar Hemiarthroplasty For Displaced Femoral Neck Fractures In The Elder Patients

Objective:To compare the efficacy of using bipolar hemiarthroplasty with unipolar hemiarthroplasty in the treatment of displaced femoral neck fractures in the elder patient.Methods:Reports of studies using randomized controlled trials to compare the bipolar hemiarthroplasty with unipolar hemiarthroplasty in the treatment of displaced femoral neck fractures in the elder patient were retrieved from the Cochrane Library,PUBMED Data,CNKI,Chinese Biomedical Database, Wanfang Data and manually(from January of 1995 to August of 2015).Methodological quality of the trials was critically assessed, and relevant data were extracted. Statidtical software Revman5.0 was used for data-analysis.Results:Twelve articles were included in the meta-analysis. The results showed that,compared the efficacy of using bipolar hemiarthroplasty with unipolar hemiarthroplasty in the treatment of displaced femoral neck fractures in the elder patient, there were no statidtical significance in the rate of mortality[RR=0.97,95%CI(0.58,1.61),P>0.05], the overall complication[RR=1.03,95%CI(0.77,1.36),P>0.05], the dislocation rate[RR=0.60,95%CI(0.26,1.38),P>0.05], the deep infection rate[RR=1.60,95%CI(0.80,3.21),P>0.05],the acetabulum erosion rate[RR=0.63,95%CI(0.39,1.03),P>0.05],the reoperation rate[RR=1.14,95%CI(0.59,2.21),P>0.05],the comparison of HHS score[SMD=0.41,95%CI(-0.06,0.88),P>0.05].Conclusion:Both bipolar and unipolar hemiarthroplasty for the treatment of elderly patient suffering displaced femoral neck fracture achieve similar and satisfy clinical effect in the period of follow-up time. Unipolar hemiarthroplasty seems to be a more cost-effectiveness option for elderly patient. According to specific conditions and request of the patients,the two methods are elected respectively.