What is an ACL?
The anterior cruciate ligament (ACL) is one of four main ligaments in the knee joint. The ACL is a ligament in the center of the knee joint that connects the bottom of the thigh bone to the top of the shinbone and provides the knee with stability.
How does an ACL injury occur?
The ACL is commonly injured by a hit to the knee (contact) or when an athlete is stopping suddenly, pivoting, slowing down quickly after running or landing from a jump (non-contact).
Who is at risk?
Any athlete can be injured, but ACL injuries are more prevalent in those who participate in high demand sports that require pivoting and cutting movements or quick planting of the feet, such as soccer, lacrosse, hockey, basketball, football, skiing, volleyball, cheerleading and gymnastics.
What are the symptoms of an ACL injury?
Athletes who tear their ACLs often hear a popping sound, accompanied by knee pain and instability. Learn more about the specific signs that may indicate you have an ACL injury here: