Background: This is a prospective Study to assess the occurrence of hypovolemic shock in children with traumatic isolated closed fractures femur. This is common in children and adolescent as result of trivial to high energy trauma. Methods: A prospective descriptive study was performed on children with traumatic femoral fractures from the 20th of September 2015 to the 15th August 2018. Selection of 100 patients presented with isolated closed fracture femur in children, were admitted to the Sul. Emergency Hospital. Reason was to correct the old criteria of blood transfusion immediately, without suitable indication of replacement with real blood requirements. Depend on the children clinical parameters rather than on hemoglobin or hematocrit concentration; pulse rate. Systolic blood pressure, respiratory rate, Skin capillary refill time, and the mental status. Excluded open fractures and bilateral fracture femur in children, also excluded any fracture associated with trauma to the body organ as associated injury. Results: There was no evidence of hemodynamic instability in the 100 patients of these type fractures, selection inclusion criteria of the study when compared with internationally accepted normal vital sign parameters. No any patients in the study had hemoglobin less than 8.5 g/dl, the vital sign between these groups were similar, 2-6% incidence with hemodynamic instability has found among multiple injured children with femoral fractures, has excluded from the study. Conclusions: No evidence of hemodynamic instability was found in children with traumatic isolated femoral fractures bone. The Hemoglobin and hematocrit ratios early were non dependable, later on not significantly decreased or change to abnormal rate. Depending on vital signs parameters in the femur bone fractures patients after exclusion of bilateral fractures femur, and associated injury or patients with compound fractures, we confirmed that isolated closed femoral fractures are hemodynamically stable.