A tear in the anterior cruciate ligament (ACL) is one of the most common knee injuries. An injury to this ligament causes the knee to become unstable and the joint to slide forward too much. ACL tears occur most often in athletes.
ACL reconstruction is usually not performed until several weeks after the injury, when swelling and inflammation have been reduced. The torn ligament is completely removed and replaced with a new ACL. Simply reconnecting the torn ends will not repair the ACL. Part of another ligament, usually from the knee or hamstring, is used to create a graft for the new ACL. Choosing the proper type of graft depends on each patient's individual condition.
ACL surgery requires a few months for full recovery and physical rehabilitation will be needed as well. Surgery is not required for all ACL injuries. Talk to your doctor to find out if ACL reconstruction is right for you.