In 2013, the publication of Steven Claes [1] on the anterolateral ligament (ALL) in the “Journal of Anatomy” caused an important media buzz, highlighting a “new knee ligament”. The problem for the surgeons in 2017 is therefore whether this ALL is really a ligamentous structure in its own right, if it has a role in the rotatory control of the knee and especially if it must be restored during a reconstruction of the ACL.