Prolonged Thromboprophylaxis With Oral Anticoagulants After Total Hip Arthroplasty

Abstract
DESPITE ADEQUATE antithrombotic prophylaxis, more than 15% of patients who undergo total hip arthroplasty still develop (mostly asymptomatic) postoperative deep venous thrombosis (DVT) of the legs, as shown by bilateral ascending phlebography performed at the time of hospital discharge.1 Although most of these thrombi are confined to the calf vein system, approximately 10% involve the proximal veins and therefore carry the potential risk of later complications.2

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