The choice of surgical treatment after ACL tear is to restore the stability of the knee joint. The recommended surgery is divided into the following three main cases: 1, you are keen on various sports such as basketball, soccer, tennis, etc. and do not want to give up your sports career, ACL reconstruction is the best choice for you. 2.You are engaged in a profession with high requirements for knee function, often needing to run, walk for a long time, hiking, etc., such as athletes, workers, police, firefighters, soldiers, salesmen, etc. 3, Your subjective symptoms are very obvious, you often feel unstable knee or “limp” even with light activities.