What is an ACL injury?
The knee contains four main ligaments: the medial collateral ligament, the posterior cruciate ligament, the lateral collateral ligament, and the anterior cruciate ligament. The anterior cruciate ligament, or ACL, runs down the center of the knee, controlling rotation and forward movement of the tibia, and is vital for stable lateral motion.
An ACL injury, commonly called a “torn ACL,” occurs when the ligament either fully or partially tears. ACL injuries are common in athletes, especially skiers and soccer players, as sudden changes in speed or direction can tear the ACL. Contact sports can also put individuals at risk of suffering a torn ACL.
An ACL tear can result in severe pain, loss of range of motion, swelling, and inability to put weight on the affected leg. With the help of a brace, some patients may be able to walk straight ahead soon after an ACL injury. However, side-to-side motion will likely be much more difficult. Depending on the severity of the injury, patients may need surgery to repair a torn ACL. Whether or not they undergo surgery, rest and rehabilitation exercises are necessary for recovery.
Source:
Mayo Clinic