Anterior cruciate ligament rupture is a common sports injury of the knee, but it is difficult to diagnose. The main manifestation of the injury is that the patient feels a “weak leg” after the injury. The gold standard for diagnosing a cruciate ligament rupture is, of course, the joint examination. If there is an ACL injury, the currently advocated treatment modality is —– If the patient has knee instability, arthroscopic reconstruction of the cruciate ligament is recommended. Of course, total arthroscopic reconstruction has become a routine reconstruction modality to replace the original incisional reconstruction modality because of its small trauma, fast recovery and good postoperative results. There are many ways of arthroscopic reconstruction, such as double-bundle, single-bundle (isometric reconstruction/anatomical reconstruction) reconstruction, and many ways of fixation, such as Endbutton, Tranfix, intrfix, and extrusion screw, but no matter which reconstruction and fixation methods are used, the purpose is to achieve effective fixation and to restore joint mobility and stability after fixation. The following figure shows the arthroscopic image of ACL rupture and reconstruction