There are many ways to rehabilitate lower extremity muscle atrophy. For example, static training of the quadriceps, contraction of the quadriceps can effectively prevent muscle atrophy of the lower limbs. The usual line of leg extension, foot hook, contraction of muscles, leg lifting exercise, can play a role in the exercise of lower limb muscle strength. For patients with loss of innervation, family members should be allowed to help exercise. For example, local muscle massage, or to the regular hospital rehabilitation department to assist functional exercise, to effectively relieve the patient muscle atrophy effect is good. There are many causes of muscle atrophy, the most common ones are local fractures and dislocations, and strict attention to rest and protection at a later stage, and long periods of inactivity can cause muscle atrophy. Lumbar spinal cord nerve injury with paralysis can also cause muscle atrophy in the lower limbs.