Anterior cruciate ligament is crucial for knee stability and movement. Injuries often occur during sport activities, especially with quick direction changes, quick halts, or jumping, like soccer, basketball, and tennis. minor injuries may not produce much sound or swelling, but serious injuries can cause a loud popping sound and major swelling. women are at higher risk than men, due to factors like anatomy, muscle strength, and playing style. physical therapy and reconstructive surgery are widely used treatments for ACL injuries, aiming to restore function and strength.