Rivaroxaban versus enoxaparin for the prevention of venous thromboembolism after total knee arthroplasty A meta-analysis

Objective: This article analyzed the clinical efficacy and tolerability of rivaroxaban and enoxaparin in patients undergoing total knee arthroplasty (TKA) surgery. Methods: Five randomized, controlled clinical trials on rivaroxaban versus enoxaparin in patients who underwent TKA were identified and included in this meta-analysis. Results: The meta-analysis indicated that rivaroxaban prophylaxis was associated with lower rates of symptomatic venous thromboembolism (VTE) (relative risk[RR]:0.55; 95% confidence interval [CI]: 0.35-0.86; P=.009), symptomatic deep vein thrombosis (DVT) (RR 0.44, 95% CI 0.25-0.80, P=.007), asymptomatic DVT (RR: 0.57; 95% CI: 0.37-0.89; P=.01), distal DVT (RR: 0.62; 95% CI: 0.45-0.85; P=.003) and proximal DVT (RR: 0.42; 95% CI: 0.24-0.75; P=.004). Compared with the enoxaparin group, the incidence of symptomatic pulmonary embolism (PE) (RR: 0.48; 95% CI: 0.19-1.24; P=.13) in the rivaroxaban group was not significantly different. A nonsignificant trend towards all-cause death (RR: 0.38; 95% CI: 0.03-4.92; P=.46) or major bleeding (RR: 1.59; 95% CI: 0.77-3.27; P=.21) risk between rivaroxaban and enoxaparin prophylaxis was found. Conclusion: Compared with the enoxaparin group, the group using rivaroxaban after TKA had a significantly lower rate of symptomatic VTE, symptomatic DVT, asymptomatic DVT, distal DVT, and proximal DVT. Our study shows that rivaroxaban after TKA is more effective than enoxaparin and did not increase major bleeding or all-cause mortality.