An ACL injury is a tear or sprain of the anterior cruciate ligament (ACL) — one of the major ligaments in your knee.

 

ACL injuries most commonly occur during sports that involve sudden stops, changes in direction, jumping and landing — such as soccer, basketball, football, and rugby.

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Depending on the severity of your ACL injury, treatment may include rest and rehabilitation exercises to help you regain strength and stability or surgery to replace the torn ligament followed by rehabilitation. Undergoing a proper training program can reduce the risk of reinjuring your ACL.