Foot sprains are not really a particularly serious problem, but without systematic maintenance, they cannot be completely cured. The main thing is that after the sprain, there is no systematic treatment and care, still carrying out normal daily life and walking down to the ground. At this time, the sprained ligaments are still under tension, and even though the pain and swelling gradually decrease at a later stage, the ligaments at the injury site will gradually heal in a relaxed state, or even in a scarred state. This state is very different from the normal ligament, which will result in the weakening of the ligament and laxity of the ligament, and eventually ankle instability. Therefore, whenever there is a lot of activity or movement, the ankle joint becomes painful and a bad situation occurs all the time. So now if there is still more obvious pain for a long time, you should go to the hospital for an MRI of the ankle joint to determine the exact severity of the ligament damage, and even serious ones need to consider surgical repair.