If a patient’s leg is inactive for more than 20 days after a foot injury, it is possible that the associated muscle atrophy will result. However, the specific degree of atrophy will vary significantly from patient to patient and will gradually recover with rehabilitation exercises. Generally speaking, in the case of patients whose lower limbs have been immobilized for a long period of time due to foot injuries, this will inevitably lead to the development of wasting muscle atrophy in the lower limb muscles. After about 20 days of immobilization, the degree of muscle atrophy is closely related to the patient’s previous degree of muscular development, as well as age, gender and other factors. If the patient is a young male with a history of regular physical activity, then the degree of muscle atrophy may be less severe. Other patients who do not exercise regularly may have more muscle atrophy. And to address this possible complication, doctors will often instruct patients to perform functional exercises for the lower extremities at the beginning of treatment to prevent it. For example, isometric contraction exercises of the lower limb muscles, etc., are required to prevent muscle atrophy and promote muscle circumference recovery while the patient remains braked.