The article describes the arthroscopic reconstructive surgical technique for the correction of anterior cruciate ligament in the instability of the knee joint; the expected long-term results of plastic repair of the anterior cruciate ligament and results of own observations are presented; different protocols of prophylactic anticoagulation therapy in the early postoperative period are compared. The obtained data demonstrates comparable efficacy of tableted medicines and traditional injectable drug forms for the prevention of thromboembolic complications