Efficacy of femoral neck system and cannulated screw in treatment of femoral neck fracture:a meta-analysis
Absrtact:Objective To evaluate the efficacy of femoral neck system(FNS)and cannulated screw(CS)in the treatment of femoral neck fracture in adults during perioperative and conjunctional periods.Methods By searching CNKI,Wanfang,VIP,CBM,PubMed,Embase and Cochrane da-tabases,relevant literatures on the efficacy comparison of the two internal fixation regimens were col-lected.Review Manager 5.3 software was used to conduct a meta-analysis of the literature finally in-cluded in the study.Results A total of 24 retrospective cohort studies were included in this study,with a total of 1 661 participants,including 783 participants in the FNS group(FNS treatment)and 878 participants in the CS group(CS treatment).In the FNS group,intraoperative fluoroscopy times(MD=-9.69,95%CI,-11.27 to-8.11,P<0.01),complete weight-bearing time(MD=-1.69,95%CI,-2.88 to-0.50,P<0.01),fracture healing time(MD=-1.15,95%CI,-1.57 to-0.73,P<0.01),Harris score at last follow-up(MD=-1.5,95%CI,2.30 to 4.59,P<0.01)and femoral head necrosis rate(OR=0.48,95%CI,0.26 to 0.91,P=0.02)were supe-rior in the CS group;however,intraoperative blood loss(MD=17.72,95%CI,9.88 to 25.55,P<0.01)and incision length(MD=0.39,95%CI,0.04 to 0.73,P=0.03)in the FNS group were higher than those in the CS group.There were no significant differences between the two groups in terms of operation time(MD=-3.78,95%CI,-7.95 to 0.39,P=0.08)and total hospitalization days(RR=-0.14,95%CI,-0.43 to 0.14,P=0.32).Conclusion FNS in the treatment of adult femoral neck fractures has the advantages of less intraoperative fluoroscopy,earlier complete weight-bearing time,faster fracture healing and higher hip Harris score,but compared with CS,it has more intraoperative blood loss and larger incision area.