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The Anterior Cruciate Ligament (ACL) is a tough cord of fibrous connective tissue that passes diagonally through the knee joint, connecting the femur (thigh bone) to the tibia (shin bone). The purpose of the ACL, which is strong but not very flexible, is to keep the joint stable by limiting the rotation and forward movement of the tibia underneath the femur.
An unstable ACL knee often requires external support via a knee orthosis. An ACL orthosis applies a corrective or motion limiting force system back onto the limb during an excessively loaded knee action. There are a number of orthoses for ACL unstable knees and each manufacture has advantages over others depending on activity, individual’s size and degree of instability. This is where your Certified Orthotist will work with you to ensure that you have the most appropriate knee orthosis for your needs.