There are several common causes of ankle pain when squatting: First, anterior ankle impingement syndrome, the patient usually has a history of ankle sprain, pain and swelling in the anterior ankle joint when squatting or standing up, and in severe cases, there will be limited ankle activities during the downstairs movement, the examination can see the anterior anterior ankle joint, anterior medial or anterior lateral localized swelling and localized compression, and the ankle joint dorsiflexion and plantarflexion with pain. Symptoms, ankle MRI can show articular cartilage damage, talar neck cartilage damage and osteochondral formation. Second, ankle synovitis, the patient may have a history of ankle sprain, pain in the ankle joint gap when squatting, cold and damp can induce pain and make the pain symptoms worse.