An ACL tear is a common knee injury that occurs when the anterior cruciate ligament (ACL), one of the key ligaments providing stability to the knee joint, is overstretched or torn. This injury is prevalent in sports like soccer, basketball, and skiing, where sudden stops, pivots, or changes in direction are common. Depending on the severity, ACL injuries can range from mild sprains to complete tears. Symptoms often include a popping sound at the time of injury, swelling, instability, and difficulty bearing weight. Treatment options vary from conservative management, such as physical therapy, to surgical intervention for complete tears, often depending on the patient’s activity level and goals.