What about leg and foot weakness in the 80s? Leg and foot weakness in the 80s is actually a common degenerative phenomenon if it is a progressive change. Because the old man 80 years old itself organ function, body capacity are degeneration, muscle strength also decline, at the same time will be combined with osteoporosis, serious osteoarthrosis and other problems, is likely to be bowed back hunchback, herniated discs, lumbar spinal stenosis, at the same time may be accompanied by hip osteoarthropathy, knee osteoarthropathy, are leading to walking pain. Because you have had osteoarthrosis before, you have less exercise and no muscle strength, and you will experience weakness in your legs and feet. What to do at this point? One needs to except serious problems, such as severe spinal stenosis, which prevents walking at all. In addition, except for the lower limb arterial lesions caused by the problem, through the lower limb vascular Doppler ultrasound to see whether there may be ischemia of the lower limb arteries, if there is no such problem, we should try to help the elderly appropriate activities, to prevent the further atrophy of muscles, to increase the amount of activity, bone density, flexibility, then we should let the elderly support the walker or push the wheelchair, to move forward, activities, the more you don’t move, the more atrophy, the more you move, but will inhibit further deterioration. Instead, it will inhibit further deterioration. If you really find leg numbness, leg pain, with lumbar spinal stenosis symptoms, you need to do lumbar spine nuclear magnetic judgment, if it is really painful and affects your life, if you are in good health, you can also do lumbar spine surgery, to do spinal decompression and enlargement of the spinal canal. Lower extremity arterial stenosis caused by arterial ischemia caused by limb weakness, weakness, can do lower extremity vascular ultrasound, if necessary, do interventional stenting or vascular bypass, improve blood circulation of the lower extremities, can also improve the symptoms. If the lesion is a sudden weakness, short-term progress is very fast, it is recommended to go to the emergency department of neurology to see if it is caused by acute cerebrovascular lesions, including acute cerebral infarction or cerebral hemorrhage, and then go through the specialized treatment, and then gradually carry out the rehabilitation training after the acute stage.