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  • Title: Tranexamic Acid in Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-analysis.
    Author: Johns WL, Walley KC, Hammoud S, Gonzalez TA, Ciccotti MG, Patel NK.
    Journal: Am J Sports Med; 2021 Dec; 49(14):4030-4041. PubMed ID: 33630652.
    Abstract:
    BACKGROUND: Hemarthrosis after anterior cruciate ligament (ACL) reconstruction procedures can delay rehabilitation and have toxic effects on the cartilage and synovium. Tranexamic acid is widely used in adult reconstruction procedures; however, its use in ACL reconstruction is a novel topic of study. PURPOSE: To analyze the available literature on hemarthrosis, pain, functional outcomes, and complications after administration of tranexamic acid in ACL reconstruction procedures. STUDY DESIGN: Meta-analysis. METHODS: A literature search was performed to retrieve randomized controlled trials examining the use of tranexamic acid at the time of ACL reconstruction procedures. The studied outcomes included postoperative joint drain output, hemarthrosis grade, visual analog scale scores for pain, range of motion, Lysholm score, postoperative rates of deep venous thrombosis, and pulmonary embolism. Outcomes were pooled to perform a meta-analysis. RESULTS: Five prospective randomized controlled trials met inclusion criteria for analysis. Four studies administered intravenous tranexamic acid in bolus or infusion form before ACL reconstruction, while 2 studies administered tranexamic acid via intra-articular injection. Specifically, tranexamic acid was administered intravenously (preoperative 15-mg/kg bolus 10 minutes before tourniquet inflation with or without 10 mg/kg/h for 3 hours postoperatively) or intra-articularly (10 mL [100 mg/mL] intraoperatively), and 1 study consisted of tranexamic acid administration in combined intravenous and intra-articular forms (15-mg/kg bolus 10 minutes before tourniquet inflation and intra-articular 3 g 10 minutes before tourniquet deflation). Tranexamic acid use in ACL reconstruction cases resulted in a mean reduction of 61.5 mL in postoperative drain output at 24 hours (95% CI, -95.51 to -27.46; P = .0004), lower hemarthrosis grade (P < .00001), improved Lysholm scores, and reduction in visual analog scale scores for pain (-1.96 points; 95% CI, -2.19 to -1.73; P < .00001) extending to postoperative week 6. Range of motion was improved in the immediate postoperative period, and the need for joint aspiration within 2 weeks was reduced (P < .001). There was no difference in venous thromboembolic event rate between the experimental and control groups. CONCLUSION: The use of intravenous tranexamic acid in ACL reconstruction surgery results in reduced joint drain output and hemarthrosis and improved pain scores and range of motion in the initial postoperative period without increased complications or thromboembolic events.
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