The common causes of ankle rattling after two years of activity include chronic injury, traumatic osteoarthritis, synovitis, and so on. 1. Chronic injury: joint ligament injury, due to chronic inflammation produced by the adhesion of the surrounding tissues caused by activity after the rattle. 2. Traumatic osteoarthritis: after joint injury, articular cartilage has the function of reducing joint friction. When articular cartilage is destroyed and the joint surface is uneven, joint friction occurs and there is a ringing sound. 3. synovitis: due to the increase of joint fluid, causing activities with rattling sound. Two years after the broken foot activity ankle rattling, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, the doctor under the guidance of standardized treatment.