ACL injury

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Definition

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Anterior cruciate ligament

An ACL injury is the tearing of the anterior cruciate (KROO-she-ate) ligament in your knee. An ACL injury may make your knee feel unstable or loose, and your knee may "give way" if you return to your sport too quickly.

Although an active lifestyle benefits your overall health, exercise isn't always easy on your knees. The anterior cruciate ligament is especially susceptible to the demands of certain sports, such as volleyball, gymnastics, basketball, soccer and football.

Treatment of an ACL injury may include surgery to replace the torn ligament, along with an intense rehabilitation program. As for prevention, if your favorite sport involves pivoting or jumping, a proper training program can help you avoid an ACL injury.

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Symptoms