The Anterior Cruciate ligament (ACL) is the primary stabilizer of the knee and its deficiency affects Knee stability, resulting in giving way symptoms in daily and sports activities with increased the risk of intra-articular damage. To prevent the deterioration of the existing lesions ACL reconstruction is necessary. Arthroscopic reconstruction of the injured ACL has become the “gold standard” method for treatment of ACL tear. However there is a controversy in literature regarding the best graft option is to replace the injured graft. The present study was aimed to study and compare the functional outcome of single bundle arthroscopic ACL reconstruction by Hamstring , Peroneus Longus and BPTB autografts using Lysholm Knee Activity Score