We were carrying out a retrospective study about the epidemiology of Pulmonary Embolísm on híp's pathology. 300 cases of the hip's pathology are revíewed, which takes a period of 5 years (1975-1980), registering 13 cases (4'3%) of pulmonary embolísms, no havíng been carried out in any of them an anticoagulative prophy laxis. This percentage is similar to the one showned by anothers authors. We try to value the possible rísk-factors at the apparition of the Pulmonary Embolism in this group of patients. We emphsize the following facts about our work: The nonexistent of Pulmonary Embolism in patients under 50 years old in our casuisty. A bigger incident on patients operated upon coxarthosis, with respect to another etiologys. The nonexistent of Pulmonary Embolism in surgical-treated patients though the Ender's enclaved. The majority of the pulmonary embolism are showned after JO days of the surgical intervention. We realized the reviewed books, the importance of putting into action on the riskfactors, thus remarking the high percentage of Pulmonary embolism in necropsics studies over clinical indetected patients.