Anterior cruciate ligament injury

Updated: 2017-06-13

Overview

Anterior cruciate ligament (ACL) injury is a tear in the ACL, tissue that connects the thighbone to the shinbone, at the knee. Most ACL injuries occur during certain sports such as basketball, soccer, and tennis.

Symptoms

Symptoms include knee swelling, instability, and pain when standing.

Treatments

Treatment may include surgery and physical therapy.