7Colwell Cw. Rationale for thromboprophylaxis in cower joint arthro- phlasty[ J]. Am J Orthop ,2007,9 : 11 - 13.
8Trobicki A, Perrier A, Konstantinides S, et al. The task force for the di- agnosis and management of acute pulmonary embolism of the Enropen Society of Cardidogy (ESC) E J]- Eur Heart J,2008,18:2276 -2315.
9Steier KJ, Singh G, Ullall A, et al. Venous thrombolism: application and effectiveness of the American College of Chest Physicians 2001 guidelines for prophylaxis [ J ]. J Am Osteopath Assoc, 2006,7 : 388 - 395,.
10Campbell IA, Bentley DP, Prescott RJ,et al. Anticoagulation for three versus six months in patients with deep vein thrombosis or pulmonary embolism, Orbeth : randomised trial [ J 1. BMJ ,2007 ,75 : 674.