• Lixin Sun, Xiaopei Zhu, Jianhong Zou, Yongchun Li, and Wei Han.
• Department of Anesthesiology, Qingdao Municipal Hospital Department of Lab, Center for Disease Control and Prevention of Shibei District of Qingdao Department of Pulmonary Medicine, Qingdao Municipal Hospital, Qingdao, China.
• Medicine (Baltimore). 2018 Feb 1; 97 (6): e9751e9751.

ObjectiveTo evaluate the efficacy between intravenous and oral acetaminophen as adjunct to multimodal analgesia regimens for pain management after total knee and hip arthroplasties.MethodsWe conduct electronic searches of Medline (1966-2017.09), PubMed (1966-2017.09), Embase (1980-2017.09), ScienceDirect (1985-2017.09), and the Cochrane Library. Only randomized controlled trials (RCTs) are included. The quality assessment is performed according to the Cochrane systematic review method. Fixed/random effect model is adopted according to the heterogeneity tested by I statistic. Meta-analysis is performed using Stata 11.0 software.ResultsTwo RCTs are included involving 236 patients. The present meta-analysis demonstrated that there were no significant differences between groups regarding pain scores at 12, 24, or 48 hours. No significant differences were observed in terms of opioid consumption at 12, 24, or 48 hours after arthroplasties.ConclusionIntravenous acetaminophen to multimodal analgesia dose not demonstrate a significant benefit in reducing pain and opioid consumption compared oral formulation after total knee arthroplasty and total hip arthroplasty. Higher-quality RCTs are required for further research.

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