"Venous Thromboembolism Prophylaxis in Orthopedic Surgery: Main Report" (see also "Venous Thromboembolism Prophylaxis in Orthopedic Surgery: Appendices") - Major orthopedic surgery (total hip replacement, total knee replacement or hip fracture surgery) carries a high risk of venous thromboembolism. Pulmonary embolism following orthopedic surgery is reported to be rare. However, without prophylaxis, historical data suggest that hospital acquired deep venous thrombosis has been estimated to occur in 40 to 60 percent of cases in the 7 to 14 days following surgery compared with 10 to 40 percent...