Setting your location helps us to show you nearby providers and locations based on your healthcare needs.
Your Location is set to Change My Location
Cone Health wants to help you get well and stay well. This section provides tools and information to achieve good health and maintain your well-being.
Learn what community resources are available to help you get well and stay well.
View health and wellness news you can use from Cone Health providers on
View Advanced Search OptionsView All Doctors
View All Locations
Home > Patient & Family Resources > Health Library > Anterior cruciate ligament (ACL)
Committed to Safety: We are taking all necessary precautions to keep you safe while we care for you. Review all our visitor policies and precautions. Get more information on COVID-19.
The anterior cruciate ligament (ACL) is one of four knee ligaments that connect the upper leg bone (femur) with the lower leg bone (tibia) by running crosswise inside the center of the knee joint. The ACL stabilizes knee movement in a forward and backward direction.
Specifically, the ACL prevents the tibia from sliding or twisting abnormally on the femur when the leg is straight or slightly bent. And the ACL prevents the knee from being stretched or straightened beyond its normal limits (hyperextended). It also supports other knee ligaments that keep the knee from bending sideways.
Current as of: March 2, 2020
Author: Healthwise Staff
Medical Review:William H. Blahd Jr. MD, FACEP - Emergency Medicine & Adam Husney MD - Family Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Subscribe to our Wellness Matters e-newsletter, a monthly snapshot of the some of great wellness content from Cone Health providers.