The architecture of the head and neck of the femur explains the exact site of the fracture line both in vertical and lateral compression of old and young.
The pathognomonic position, eversion of the femur with the fractured neck, is the result of the action of the ischiofemoral ligament combined with muscular fixation.
The question of healing of fractures of neck is entirely dominated by the difference of nutritional conditions in different types of fractures and in various ages of the patient.