RESUMEN
Authors bring back 5 cases of fractures of stress of the femoral collar respectively at 3 patient aged of 26, 36 and 47 years with bilateral reach in 2 cases. The diagnosis of stress fracture has kept before a bundle of arguments to know: the traumatic absence and the existence of an obvious intense physical activity in case, the pathological antecedent absence, the normality of the biologic balance well as the reminiscent radiological aspect. The treatment consisted in a vissage in 4 cases total arthroplastie of the hip in a case. To the light of these 3 observations and a magazie of the literature, authors analyze epidemiologic, etiopathogenic and physiopathologic aspects aspects as well as the therapeutic possibilities of the fractures of stress of the femoral collar. They also underline especially the gravity of this pathology and the interest of data of the imagery to the precocious stadiums of the illness the scintigraphie and the IRM, the key of the treatment being the precocious