[Prevention of thromboembolism using low molecular weight heparin and hemodilution in traumatologic geriatric surgery of the femur neck].

A routine method of prophylaxis of thromboembolic disease is evaluated on 181 elderly patients undergoing post-traumatic hip surgery. A low incidence of proximal thrombosis and fatal embolism is noted and rated as a beneficial effect of the association of low molecular weight heparin therapy and moderate hemodilution; it is also connected with a precocious diagnosis of the thrombotic complications--before the proximal extension of silent thromboses--by the measurement of specific fibrin derivatives used as a screening technique in order to select the patients who will have to undergo venographical examination.