This book includes latest updates in techniques for ACL surgery.  There are different options to manage an ACL-deficient knee—to reconstruct, to repair or to augment the ACL. There are also different techniques to reconstruct the ACL— hamstrings, patellar tendon or other grafts can be used. The use of each graft may influence the fixation.  All chronic anterolateral instabilities cannot be reconstructed by isolated ACL reconstruction. In some cases, an extra-articular augmentation or tenodesis may have to be considered.  Familiarity with all techniques and procedures will allow the surgeon to optimize the operation depending on the clinical and radiological examinations and on the patient’s expectation or previous surgeries.  Rehabilitation is an important part of the treatment and the general principles are summarized neatly at the end of the book.