Objective    To observe the clinical outcome of arthroscopic anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone (B-PT-B) allograft.     Methods    Totally 125 patients with ACL ruptures received ACL reconstruction with B-PT-B allograft between December 2005 and December 2007

and 109 were followed up. Clinical outcome was evaluated according to International Knee Documentation Committee (IKDC)

Lysholm knee

Irgang and modified Larson scores.     Results    The patients were followed up for 6 to 24 months (mean 16.9 months). All grafts for reconstruction were in good position according to X-ray image during the fellow-up period. The KT-1000 maximal manual side-to-side difference was less than 3 mm in all patients. By the time of latest follow-up

IKDC scores in 98 patients (89.9％) were normal or nearly normal. The average Lysholm score was improved from preoperative 50.2±4.3 to postoperative 88.4±6.4

Irgang score from 43.4±4.3 to 82.6±5.3

modified Larson score from 41.4±4.8 to 88.5±4.3.     Conclusion    The B-PT-B allograft is alternative graft for ACL reconstruction. Arthroscopic ACL reconstruction with B-PT-B allograft achieves satisfactory clinical outcomes.