Prophylaxis of venous thromboembolic disease following hip and knee surgery.
D000758:Anesthesia / Q000379:methods; D006621:Hip Joint / Q000601:surgery*; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D011183:Postoperative Complications / Q000517:prevention & control*; D013924:Thrombophlebitis / Q000517:prevention & control*