In this study we compare two methods of anterior cruciate ligament (ACL) reconstruction surgery in order to determine the best approach. This is a single blind clinical trial on 70 patients with anterior cruciate ligament (ACL) injuries. Inclusion criteria are: ACL injuries within last five months, normal opposite knee. Exclusion criteria are: previous knee surgery, associated ligament injury, abnormal radiographies.
The patients will be divided into two groups. The surgical condition for all of them is identical except using of one or two tendons. All operations will be done by a same team of surgery. In one group, cruciate ligament reconstruction is performed by using 4-strand semi tendinousus - gracilis and in another group, the semitendinosus tendon alone.
Three months and one year after surgery the patient will be visited by two specialists separately, and based on clinical findings, the questionnaire will be filled and the knee will be examined by KT2000 Test. Differences in knee extension are verified by lateral knee radiography in full extension. Lachman test, anterior drawer test and pivot shift test is performed in both legs, and the difference between the two knees is defined and classified by Lysholm and Koos-IKDC directories. Forty-five days after surgery, control radiography is taken. One year later, another specialist who is blind to the study, performs physical examinations consist of isometric and isokinetic hamstring strength (torque peak angle) and knee flexion angle in standing position. Finally obtained data collected and mean scores of every section will be analyzed.