• Tao-Ping Chen, Yu-Min Chen, Jian-Bao Jiao, Yun-Fei Wang, Li-Gang Qian, Zhao Guo, Zheng Ma, Cui-Yu Han, and Tong-Huan Shi.
• Affiliated Hospital of Hebei University, Yuhua Dong Road, 212, Yuhua District, Baoding, Hebei Province, China.
• J Orthop Surg Res. 2017 Jan 19; 12 (1): 11.

BackgroundThis study aims to compare the effectiveness and safety of topical versus intravenous tranexamic acid (TXA) in reducing blood loss in primary total knee arthroplasty (TKA).MethodsPubMed, Embase, the Cochrane Library, Web of Science, Chinese Biomedicine Literature (CBM), Wanfang Database and China National Knowledge Infrastructure (CNKI), and Google Scholar were searched for randomized controlled studies (RCTs) that compared topical versus intravenous TXA in terms of reducing blood loss during TKA from their inception to September 2015. This systematic review and meta-analysis was performed according to PRISMA criteria.ResultsTwelve studies reporting 12 RCTs comprising 1130 patients were included. Compared with the intravenous administration of TXA, the topical administration of TXA showed no significant differences in total blood loss (MD 2.08, 95% CI -68.43 to 72.60, P = 0.95), blood loss in drainage (MD 18.49, 95% CI -40.01 to 76.98, P = 0.54), hidden blood loss (MD 4.75, 95% CI -337.94 to 347.44, P = 0.99), need for transfusion (RR = 0.92, 95% CI 0.67~1.25, P = 0.58), hemoglobin (Hb) decline (MD -0.42, 95% CI -0.89 to 0.05, P = 0.08), and DVT occurrence (RR = 1.17, 95% CI 0.55~2.50, P = 0.68).ConclusionsCompared with intravenous administration TXA, topical administration TXA exhibits comparable effectiveness and safety in terms of reducing blood loss during TKA. Due to the poor quality of the included studies, more high-quality RCTs are needed to identify the optimal method and dose of TXA after TKA.

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