Intertrochanteric fracture is the fracture occurring between the greater and lesser trochanters, also called intertrochanter fracture of femur. It is often seen in old people, usually caused by indirect violent force. The typical gesture of injury is just the same as that in the fracture of neck of femur. According to the direction and location of fracture line, it may be classified into three types of anterograde intertrochanteric, retrograde intertrochanteric and subtrochanteric fractures. Fracture of trochanter is commonly comminuted because of its loose and fragile substances. The fracture can be healed generally due to rich supply of blood for trochanter, with a good prognosis.