“…Several guidelines for DVT and PE prevention have recommended anticoagulant drugs based on studies showing efficacy for reducing the incidence of DVT, including asymptomatic DVT, using imaging modalities [8,13,23,32]. However, mechanical prophylaxis with intermittent pneumatic compression (IPC) in combination with other nonpharmacologic modalities such as regional anesthesia, rapid mobilization, and/or aspirin also reportedly is effective for thromboprophylaxis with 0.7% to 5.3% incidences of DVT [4,6,12,19,26,28,29,33,34]. A previous multicenter study of 3016 patients who underwent elective hip surgeries and received IPC prophylaxis without pharmacologic agents showed no patients had fatal postoperative PE, one (0.03%) had a symptomatic PE, and four (0.1%) had symptomatic DVT [31].…”