Data were not sufficient for evaluation of prolonged prophylaxis for total knee replacement and hip fracture surgery.
Bottom line: Prolonged prophylaxis is associated with fewer VTE events in patients with hip replacement but also carries increased risk of minor bleeding.
Citation: Sobieraj DM, Lee S, Coleman CI, et al. Prolonged versus standard-duration venous thromboprophylaxis in major orthopedic surgery: a systematic review. Ann Intern Med. 2012 May 15 [Epub ahead of print].