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

Objective: To determine whether suction drainage is safe and effective compared with no-drainage in total hip arthroplasty. Methods: 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. Results: The meta-analysis indicate that suction drainage increases the rate of homologous blood transfusion ( OR =1.98, 95% CI : 1.49-2.64, P <0.000 01)and the length of stay ( OR =0.66, 95% CI : -0.01-1.33, P =0.05) ( P <0.05). No significant difference was observed in the incidence of infection( OR =0.80, 95% CI : 0.52-1.22, P =0.30), wound haematomas( OR =0.47, 95% CI : 0.21-1.10, P =0.08), oozing ( OR =0.93, 95% CI : 0.63-1.36, P =0.71) , deep venous thrombosis( OR =2.12, 95% CI : 0.68-6.56, P =0.19), VAS( OR =-0.06, 95% CI : -0.37-0.24, P =0.68) when the drainage group was compared with the no-drainage group. Conclusions: 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.