In case of the anterior cruciate ligament injury or ACL tear, the anterior cruciate ligament tears. Cruciate ligament rupture is often used as a synonym for the anterior cruciate ligament injury, but besides the anterior ligament, it also encloses posterior ligament rupture. The anterior cruciate ligament tears more often than the posterior cruciate ligament. The function of the cruciate ligaments is to stabilize the knee joint. If cruciate ligament ruptures, the menisci, and cartilage are overloaded, which bears the risk of secondary damage (meniscus tear, cartilage damage, arthritis).