Sore ankles are considered to be overwork, sprain, osteoporosis, etc. 1. Overexertion: If you do heavy physical labor or a lot of sports and long-term walking, fatigue will cause chronic damage to the ankle muscles, so you feel sore and swollen. 2. Sprain: If you accidentally break your foot when walking, it will lead to sprain, the pain at the beginning, accompanied by swelling, after 3 to 4 days after the injury, the bruise is gradually absorbed, the swelling will begin to subside, and the pain will be reduced, and some of the performance of the ankle soreness and swelling. 3. Osteoporosis: Osteoporosis is common in elderly patients, mainly due to the decrease of bone formation, bone resorption caused by the increase of bone in the gap increase, the formation of osteoporosis, the beginning of the symptoms are not obvious, with the development of the disease, the patient will have symptoms such as fatigue, ankle soreness and swelling symptoms may also occur. The cause of ankle soreness cannot be accurately determined by the ankle soreness alone, but also needs to be combined with the characteristics of the medical history and other test results to make an accurate judgment, it is recommended to clarify the cause of the disease under the guidance of the doctor and targeted treatment.