[Meta analysis of the efficacy and safety of drainage after total hip arthroplasty].

To determine whether suction drainage is safe and effective compared with no-drainage in total hip arthroplasty. The research was based on PubMed, MEDLINE, EMBASE, Highwire, the Cochrane Library, CBM, CNKI, VIP and WFSD.The data were analysed using RevMan 5.2.Twenty-seven randomised controlled trials involving 3 603 hips were included in the analysis. The meta-analysis indicate that suction drainage increases the rate of homologous blood transfusion (=1.98, 95%: 1.49-2.64, <0.000 01)and the length of stay (=0.66, 95%: -0.01-1.33, =0.05) (<0.05). No significant difference was observed in the incidence of infection(=0.80, 95%: 0.52-1.22, =0.30), wound haematomas(=0.47, 95%: 0.21-1.10, =0.08), oozing (=0.93, 95%: 0.63-1.36, =0.71) , deep venous thrombosis(=2.12, 95%: 0.68-6.56, =0.19), VAS(=-0.06, 95%: -0.37-0.24, =0.68) when the drainage group was compared with the no-drainage group. The comparison between suction drainage and no drainage in THA have indicated that no-drainage for easy total hip arthroplasty may be a better choice. However, orthopedic surgeon need to weigh the pros and cons of no-drainage in some complicated THAs.