Tears of the anterior cruciate ligament (ACL) are among the most common reasons for a visit to an orthopedic surgeon, especially among athletes. If you’ve suffered an ACL tear, it can be helpful to have a basic understanding of your knee anatomy. Your knee joint is formed by the intersection of three bones: the femur, tibia, and patella. The ACL and the other ligaments of the body connect one bone to another to enable stability of movement. Your knee has two collateral ligaments and two cruciate ligaments. The collateral ligaments are on either side of the knee.

The cruciate ligaments, including the ACL, are located within the knee. The ACL crosses the posterior cruciate ligament, forming an “X” structure. The ACL is located in front of the posterior cruciate ligament, extending diagonally across the front of the knee. These cruciate ligaments are essential for the knee’s back and forth motions. Specifically, the ACL keeps the tibia, or shinbone, from moving in front of the femur, or thighbone. Additionally, this ligament gives the knee added stability with rotational movements.

At Able Orthopedic & Sports Medicine, our team of orthopedic specialists has extensive experience working with patients with knee injuries and other orthopedic problems. Residents of the NYC area can contact our Forest Hills practice at (718) 690-9520.