The anterior cruciate ligament (ACL) is the most frequently injured ligament in the knee joint. Various graft substitutes and fixation techniques have been used for reconstruction of the ACL. The aim of this thesis was to evaluate the efficacy of biodegradable double cross-pin technique in fixation of bonepatellar tendon-bone graft in ACL reconstruction.Thirty patients, all males, with an average age of 29.7 yrs (range 19 to 39),with a primary diagnosis of ACL insufficiency underwent open ACL reconstructions using the Bone-Patellar Tendon-Bone autografts which were fixed using biodegradable double cross pins on the femoral side and biodegradable interference screws on the tibial side with a follow up period of 12 to 18 months. An accelerated program was used for the postoperative rehabilitation. All patients were evaluated using the IKDC knee rating system.The IKDC system scores revealed an overall improvement as 15 (50%)patients were rated normal, 11 (36.7%) patients were rated nearly normal (final IKDC rating of 86.7% normal and nearly normal), and 4 (13.3%) patients were rated abnormal. No (0%) patients were rated severely abnormal at the latest follow-up. These results compared favorably with the results of related studies in the literature with an accepted complication rate (especially regarding loss of fixation and significant synovitis).In conclusion, this study suggests that fixation of the BPTB graft using two biodegradable pins (Rigid Fix) is a reproducible and reliable method for ACL reconstruction provided careful patients selection, proper surgical technique and adequate rehabilitation program.