One year after a foot injury, if it has healed, there is usually no redness or swelling, but if it heals poorly or if complications arise, it may cause redness, swelling and discomfort. Under normal circumstances, foot injuries can be divided into soft tissue injuries and ankle fractures, through the treatment of 1~3 months can be basically healed back to normal, one year after the injury, the trauma and the ankle usually do not appear redness, swelling and pain and other symptoms. If the degree of fracture is more serious, the joint surface of the ankle may not recover well, the patient often strenuous exercise within a year, or long-term excessive weight-bearing labor, etc., prone to cause traumatic arthritis, secondary injuries, or vascular lesions, which can lead to redness and swelling of the ankle, and in severe cases, lead to activity limitation. If the foot is injured after a year will still be red, swollen and painful, mostly belong to the abnormal performance, the patient needs to consult the doctor in time to identify the cause of the disease, timely targeted treatment, so as not to delay the condition.