ACL is crucial for stabilizing the knee and enabling movement. Injuries often occur during athletic play, especially with rapid changes of direction, abrupt stops, or jumping, like soccer, basketball, and tennis. less severe injuries may not lead to much sound or swelling, but severe injuries can bring a loud pop sound and major swelling. Women are more prone than men, due to factors like anatomy, muscle strength, and playing style. Physical therapy and reconstruction surgery are common treatments for ACL injuries, to restore knee function and strength.