Background: Anterior cruciate ligament (ACL) play the importance role in stability of knee. Our purpose was to report the stability and functional outcomes for a prospective series of patients with ACL injuries treated with reconstruction of use of autogenous patellar ligament. Methods: A prospective study of 30 patients with ACL ruptures treated with arthroscopically assisted reconstruction with autogenous patellar ligament was initiated from May 2008 to December 2010 at Hue University Hospital. Lachman test, anterior draw test, pivot shift test, functional Lysholm scores were obtained at each visit, including preoperatively and at the third and sixth month of follow-up visit. Results: Thirty patients (male : female = 2.3; with a mean age of thirty years) enrolled in the study. Twenty one knees had an isolated ACL tear, nine also had an associated PCL tear and/or meniscus injuries. Lachman test was positive in 100% of cases, draw test was positive in 86% and pivot-shift test was positive in 93%. Mean value of knee function according to Lysholm score was 56 points. Twenty-six patients were followed-up in six months. Lachman test was positive in 15% of all cases, draw test was positive in 7% and pivot-shift test was positive in 7%. Lysholm outcomes scores were improved to 89 points. Conclusions: Bone patellar tendon bone graft was a useful and safety technique for anterior cruciate ligament reconstruction.