For the symptoms of osteochondritis, generally osteochondritis is divided into two categories: first, the periosteum is stretched and congested due to excessive running, jumping or sudden movement, and in severe cases there can be slight exudation, which is mainly manifested in local pain, which can be relieved after rest when it is not severe and is manifested as a transient tingling pain. If severe, there will be continuous localized painful exudation, and the nerves that stimulate the periosteum will become very sharp. In addition to pain, there will be local swelling, and if the pain is severe or swollen, the muscles and local limbs will be protected and restricted in their activities, usually because the pain does not dare to move, and sometimes the swelling will be more obvious. Second, infectious periostitis caused by trauma or other systemic infections, in this case, in addition to pain and swelling, there will be localized skin redness, even pus formation and very severe pain, which requires anti-infection treatment after symptomatic examination.