The main sequelae of femoral neck fracture include ischemic necrosis of femoral head, deformity healing, limb shortening, activity disorder and non-union of fracture. 1. Ischemic necrosis of femoral head: the anatomy of femoral neck is relatively special, with less blood supply, once the femoral neck fracture occurs, the blood supply to the femoral head will be greatly affected, and ischemic necrosis of femoral head will easily occur, which is the most common sequela in the clinic. 2. Deformity healing: Because traction and manipulation after femoral neck fracture is more complicated and difficult, it may lead to poor alignment of the fracture, and deformity healing of the fracture may occur easily. 3. Shortening of limbs: deformed healing may cause shortening of the neck of the femur, resulting in unequal length of both lower limbs and limping when walking. 4. Activity disorders: Ischemic necrosis of the femoral head occurs, and osteoarthritis is also induced. Patients with femoral neck fracture may have pain and activity limitation, resulting in a smaller range of motion of the hip joint. 5. Non-union of fracture: patients with femoral neck fracture may have non-union of femoral neck fracture, which is mostly caused by more serious damage to local blood circulation. If the fracture of the neck of femur long-term bed rest, there may also be lung, urinary tract infection, buttocks, heels and other places of pressure sores, as well as lower extremity venous thrombosis and other sequelae. If a fracture of the neck of the femur occurs inadvertently, it is necessary to go to the hospital as soon as possible for medical examination and regular treatment under the guidance of the doctor.