Extending the arm to grip the hand pain is one of the symptoms of synovitis, osteochondritis is one of the common clinical orthopedic diseases, many of which are due to the patient’s sudden increase in sports activities in the usual sports clinic, thus leading to periosteum damage related. Osteochondritis dissecans is a common orthopedic disease, many of which are caused by the sudden increase in sports activities, which leads to the periosteum being injured. 2. Observe whether there is localized congestion on the affected side. 3, whether the periosteum is thickened by X-ray examination. 4, whether the tibiofibular bone of the calf is painful when pressed lightly after exercise. 5. Observe whether there is limited swelling on the inner side of the calf or above the ankle joint. 6.After the exercise, gently press the lower and middle part of the calf to feel whether there is obvious pressure and pain.