The native ACL is made up of two bundles; the anteromedial bundle and the posterolateral bundle. Over the last 20+ years surgeons have been reconstructing only the anteromedial bundle.
Why? Good Question. We did not realize how important the posterolateral bundle is. Over the last 5 years, though, a growing number of surgeons, myself included, have been switching over to a double bundle technique that reproduces the “normal” anatomy of the ACL before it was torn. To my knowledge, I am the only Orthopedist in the Hudson Valley currently performing this technically challenging procedure. This link will take you to the site of Dr. Freddy H. Fu, who has been researching this technique for years.