The 6-month deconditioning of femoral neck fracture and the lack of strength in the soles of the feet may be related to the reduction of muscle strength of the lower limbs after prolonged bed rest. The femoral neck fracture site is relatively special, the blood supply here is less, compared with other parts of the fracture recovery is slower, so the best time for femoral neck fracture is in the 3 months to 6 months after the operation, before taking off the crutches should be bedridden for a long time, to avoid the fracture end of the displacement, resulting in fracture non-healing and necrosis of the femoral head. Because of the long-term bed rest, the limbs are not exerted for a long time, the muscle atrophy occurs to different degrees, and the blood supply of the lower limb muscles is relatively small, which results in the softness of the legs and the lack of strength in the soles of the feet. When the patient in addition to the crutches walking foot bottom weak accompanied by severe pain and other symptoms, do not rule out the possibility of femoral head necrosis and other diseases, it is recommended to go to the hospital in a timely manner, so as to avoid delays in the condition.