ACL (Anterior Cruciate Ligament) surgery is a surgical procedure performed to reconstruct a torn ACL in the knee. The torn ligament is replaced with a graft, usually sourced from the patient's hamstring tendon, patellar tendon, or a donor's tissue. The surgery is typically performed arthroscopically, involving small incisions for faster recovery and reduced scarring. ACL surgery aims to stabilize the knee joint, restore knee function, and prevent further damage. Advantages include improved knee stability, reduced pain, and enhanced ability to engage in physical activities and sports. With proper rehabilitation, patients can often return to their pre-injury activity level.