Background: The proximal femur has a complex anatomy and its fracture is associated with high frequency of morbidity and mortality. These fractures are one of the common lower extremity fractures that may occur in young or old people. The aim of this study was to investigate the relationship between age and sex of the patients with proximal femoral fractures in different anatomical locations.

 Methods: In a retrospective study, 5000 registered proximal femur fracture (39.5 men, 60.5 women) were studid in a 5-year period in a teaching hospital in Tabriz-Iran. The demographic information, mechanism of trauma and type of proximal femur fracture were extracted from the medical records. The information was classified and analyzed.

Results: Average age of patients was 73.2 ±12.3 years old (32-100 yrs old). Intertrochanteric fracture was seen more in women than men (70% vs 60%). The sub-trochanteric and femoral neck fractures occurred more in men (31% vs. 27%). 91% of fractures were intertrochanteric in patients over 65 years of age, and most of subtrochantric fractures happened below 65 years of age.

Conclustions: The intertrochanteric fracture is occurred more in the elderly and in ages above 65 years. Women are at greater risk of proximal femur fractures. The trochanteric and femoral neck fractures often occur in young people.