First, the functional anatomical characteristics of the foot Our foot has a complex anatomical structure, each side of the foot has 26 bones, more than 100 tendons, ligaments and 33 joints. Its main function is to carry weight and push the body forward. The foot requires a certain degree of flexibility to adapt to a variety of different ground to maintain body balance; the foot also has a certain degree of stability to withstand the amount of reaction force given to the body by the ground during various activities. We generally walk 8,000-10,000 steps a day, the distance walked in a lifetime can be 4 weeks around the earth, and the foot in walking withstand the force is 2-3 times the weight, so the elderly foot is prone to lesions. Second, what changes will happen to the feet of the elderly? 1.The foot will become wider and longer. 2. The arch of the foot may be flatter than in younger years. 3, the heel fat pad may shrink. 4.The foot and ankle joints may lose their normal mobility and become stiff. 5. The ability to balance the foot and ankle joints while walking is reduced due to a decrease in muscle strength and body coordination. These changes are normal degeneration of the human body and do not necessarily cause discomfort, but if you do not pay attention to foot health care may cause foot lesions, such as bunions, hammertoes, bursitis, calluses, corns, intermetatarsal neuromas and arthritis. Third, how to check their feet? You can check from the following aspects: 1. skin, see if the skin has calluses, blisters, and whether it is irritated and red. 2, blood circulation: look at the color of the toes, red, purple or dark. Press the toenail to make it white, generally normal people relax the pressure, the color under the nail will be restored after 2-5 seconds. 3. Flexibility, use your toes to hold a small ball or towel, if you can do it, it means that your toes have good flexibility. The flexibility of the ankle joint can be tested by the following methods: stand on a step with the forefoot, put the heel down, stop the test if you feel pain in the heel, if you feel some pulling in the heel or calf, you can improve the flexibility of the ankle joint through exercise, if you can complete this action smoothly, it means the ankle joint has good flexibility. 4.Feeling, you can use a pencil eraser to rub different parts of the feet to compare and check, and can compare with other parts of the body to see if it is the same. 5, pain, there should be no pain in any part of the foot. 6.Balancing ability, after closing the eyes, stretch out the hands to stand on one foot, generally 40-50 years old, can stand for 10 seconds; after 50 years old, can stand for 7 seconds. 7.Check the arch of the foot. 8.From the wear and shape of the shoes you are wearing to understand the condition of the foot.