The cause of ankle pain often occurs in young patients. After prolonged standing, long distance walking, running and other sports during the day, acute strain on the muscles, ligaments and joint capsule around the ankle joint causes aseptic inflammation, causing patients to feel varying degrees of throbbing pain in the ankle. In other cases, osteoarthritis and ankle impingement occur in the elderly. The bone flab in front of the distal tibia irritates the surrounding synovial membrane, causing pain, and the synovial fluid secreted by synovial hyperplasia swells the ankle joint, often causing patients to feel varying degrees of throbbing pain in the ankle joint. Another common reason is that middle-aged male patients have been eating seafood, drinking beer and other foods high in uric acid for a long time, which makes patients suffer from gouty arthritis and deposits of uric acid crystals in the ankle joint, resulting in sterile inflammation and making patients feel throbbing pain in the ankle joint.