<prompt> The blood supply of Anterior Cruciate Ligament ACL is primarily derived from:Superior medial genicular aeryDescending genicular aeryMiddle genicular aeryCircumflex fibular aery  <response>: 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: Campbells 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 