It should be autologous ligament! Artificial ligament is a ligament made of fibers. Autogenous ligament is the length of ligament reconstructed according to the patient's needs. Tendons, such as hamstring muscle, are taken out from the back of the patient's calf during the operation and then tied tightly. As a reconstructed ligament, the position of anterior cruciate ligament can be fixed with absorbable nails, and the mobility of artificial ligament can be easily restored after operation. The advantage of this operation is that the tendon is taken from your own body, and there is no rejection and no other abnormalities. Artificial ligaments are made of fibers, and fiber fragments will fall on the joints after long-term exercise.