What is the anterior cruciate ligament (ACL)?

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What is the anterior cruciate ligament (ACL)?

Your knees are made up of bones, ligaments, tendons and cartilage. The anterior cruciate ligament (ACL), which is located in the front center of your knee, connects the thigh bone (femur) to the shin bone (tibia). It is one of four primary ligaments located in your knee:

  • Anterior cruciate ligament (ACL).
  • Medial collateral ligament (MCL).
  • Lateral collateral ligament (LCL).
  • Posterior cruciate ligament (PCL).

The main function of the ACL is to stop forward movement and rotation of the shin bone on the thigh bone.

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