Anterior cruciate ligament(ACL)tear is more common in people who exercise,especially in young people.Due to the change of intraarticular environment and joint mechanics,the rupture of this ligament can lead to symptoms such as knee pain,instability and mobility dysfunction,which will bring long-term negative effects to patients.It is worth noting that many studies have shown that ACL rupture can cause synovial inflammation,chondrocyte injury and cartilage matrix degradation,and finally lead to posttraumatic osteoarthri-tis(PTOA).The causes of these changes in the articular cavity may be closely related to the changes in the articular cavity environment af-ter ACL tear.Therefore,based on the changes in the intraarticular environment after ACL rupture,this paper mainly analyzes the influence of the changes in the intraarticular environment before and after surgery on the prognosis of patients,and provides a reliable scientific basis for the predicating PTOA after ACL rupture.
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