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Chinese Journal of Joint Surgery(Electronic Edition) ›› 2019, Vol. 13 ›› Issue (01): 78-85. doi: 10.3877/cma.j.issn.1674-134X.2019.01.015

Special Issue:

• Meta Analysis • Previous Articles     Next Articles

Meta-analysis on risk factors for venous thromboembolism after total knee arthroplasty

Jing Zeng1, Hongpu Zhao1,(), Zhanxiang Yang1, Jingyun Zhang1, Zhaokuan Zheng1, Baojie Wu1   

  1. 1. Department of Orthopedics, The third affiliated hospital of guangzhou medical university, Guangzhou 510150, China
  • Received:2018-07-17 Online:2019-02-01 Published:2019-02-01
  • Contact: Hongpu Zhao
  • About author:
    Corresponding author: Zhao Hongpu, Email:

Abstract:

Objective

To systematically analyze the risk factors associated with venous thromboembolism(VTE) after total knee arthroplasty(TKA) and to provide evidence for prevention of VTE after TKA through meta-analysis.

Methods

Potential clinical studies were identified by searching PUBMED, EMBASE, Cochrane library, China National Knowledge Infrastructure (CNKI) and other databases from the start time of the data bases to June 2018. The literatures which were irrelevant to adult, and the literatures in those without general population of VTE and non-VTE groups, were all excluded. Two authors independently extracted data and assessed the methodological quality. RevMan analyses(RevMan 5.3.5)were used to analyze the data.

Results

Twenty-three studies were finally selected. The total number of patients included in this review were 775 294, whereas 10 325 patients developed VTE after TKA. The averaged VTE rate was (18.29±0.23)%. Factors found to be associated with VTE after TKA included age≥70[OR=0.92, 95%CI(0.87, 0.97), I2=33%, P<0.05], age≥80[OR=0.85, 95%CI(0.76, 0.96), I2=68%, P<0.05], and the use of tourniquet during the surgery[OR=2.14, 95%CI(1.36, 3.38), I2=0%, P<0.05]. No significant association was found in female[OR=0.95, 95%CI(0.85, 1.05), I2=59%, P>0.05], Negroids[OR=0.40, 95%CI(0.11, 1.48), I2=99%, P>0.05], hypertension[OR=1.46, 95%CI(0.87, 2.45), I2=91%, P>0.05], diabetes[OR=1.11, 95%CI(0.90, 1.37), I2=68%, P>0.05], rheumatoid arthritis[OR=0.78, 95%CI(0.38, 1.56), I2=89%, P>0.05], revision TKA[OR=1.14, 95%CI(0.18, 7.25), I2=88%, P>0.05], varicose veins in lower extremities[OR=1.30, 95%CI(0.83, 2.04), I2=29%, P>0.05], tumors[OR=1.11, 95%CI(0.32, 3.92), I2=91%, P>0.05], heart disease[OR=1.19, 95%CI(0.37, 2.89), I2=98%, P>0.05], and liver and kidney disease[OR=1.19, 95%CI(0.84, 1.67), I2=0%, P>0.05].

Conclusion

In this review, risk factors associated with VTE after TKA include age≥70 and 80 years, the use of tourniquet during the surgery; surgeons should be pay close attention to the patients involved with the these factors to prevent VTE after TKA.

Key words: Total knee arthroplasty, Venous thromboembolism, Risk factors, Meta-analysis

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