event survey), and the Unit of Angiology, University Hospital of

Background: Knee arthroscopy, the most common orthopedic op-eration worldwide, carries a definite risk for deep venous thrombo-sis; however, postsurgical thromboprophylaxis is not routinely rec-ommended. Objective: To evaluate whether low-molecular-weight heparin (LMWH) better prevents deep venous thrombosis and does not cause more complications than graduated compression stockings in adults having knee arthroscopy. Design: Assessor-blind, randomized, controlled trial