After a fracture of the lower leg, there may be a problem of muscle atrophy because there is no way to walk with weight for a while. For patients with conservative treatment, such as external fixation by plaster brace or splint, since the ankle and knee joints have been fixed in most cases, early joint exercises are not necessary. For the muscles of the hip, it is recommended that patients should first perform straight leg raising exercise and lateral raising exercise in the lateral recumbent position if they can tolerate it, in order to exercise the iliopsoas muscle and the gluteus medius and gluteus maximus muscles of the hip, so as to avoid the atrophy of the hip muscles. For patients with surgical treatment, there is no need to restrict joint activities, so ankle and knee joint activities and exercises can be performed early after surgery, and the muscles of the calf and ankle can be exercised at the same time, and ankle pump exercise and active contraction of quadriceps are the most commonly used exercise methods.