The femoral neck is located in the human hip and is part of the hip joint, the upper end is connected to the femoral head and the lower end is connected to the greater trochanter and lesser trochanter of the femur. It is characterized by poor blood circulation. Once it is subjected to external force, resulting in fracture of the femoral neck, especially the occurrence of subtalar fracture, if the consultation is not timely or inappropriate treatment is taken, it will easily lead to bone nonunion and delayed healing of the bone, and attention should be paid to the protection of the hip joint during activities. If you have a long-term habit of drinking alcohol, smoking or applying hormone drugs, as well as long-term chronic exertion and strain, it is also easy to lead to necrosis of the femoral head. After the occurrence of necrosis of the femoral head, most of them are treated with surgery and artificial hip replacement.