Duration of Anesthesia and Venous Thromboembolism After Hip and Knee Arthroplasty

We found a marked association between the duration of anesthesia and postoperative VTE in patients undergoing joint arthroplasty. Although it is possible that unmeasured intraoperative variables account for this relationship, we suggest that duration of anesthesia may be an important risk factor for postoperative VTE after orthopedic surgery.