This research paper gives us information about the clinically tested results of the one-stage technique of anterior cruciate ligament (ACL) and anterolateral ligament (ALL) of the knee. The developed technique was applied in the orthopedic department at State Clinical Hospital of the V.M. Buianov of Moscow in 14 patients (mean age 32 ± 3 years, 8 women and 6 men) with combined single-stage damage to the ACL. The functional state was assessed on the VAS scale: before the operation - 7 points, after 6 months - 8.5, and also on the KOOS scale: before the operation 76 ± 4 points, 6 months after 87 ± 6 points. This operation allows to achieve maximum stability in the knee joint in the course of single-step recovery of all damaged ligamentous structures. An application for the patent of the Russian Federation No. 83 / PM dated January 29, 2017 has been filed for this technique. This research article gives us information about the one-stage technique in order to restore the stability of the joint between anterior cruciate ligament (ACL) and anterolateral ligament (ALL) of the knee. © 2019 Ministry of Health. All rights reserved.