The blood supply of Anterior Cruciate Ligament (ACL) is primarily derived from:
Superior medial genicular aery
Descending genicular aery
Middle genicular aery
Circumflex fibular aery
The primary blood supply to the Anterior cruciate ligament comes from the middle genicular aery which pierces the posterior capsule and enters the intercondylar notch near the femoral attachment. Ref: Campbell's Operative Ohopaedics, 11th Edition, Page 2497;Operative Ahroscopy, 3rd Edition, Pages 67, 68; Current Concepts in ACL Reconstruction By Freddie Fu, 2008, Chapter 2, Page 28