Knee dislocation is often combined with multiple ligament injuries, and at the same time in the early stage should be closely observed whether there is N fossa of vascular injury and skin dehiscence injury, as well as nerve injury, early should be reset after cast or external fixation, on the one hand, observe the vascular nerve injury or not, on the one hand, let the dislocation caused by the knee capsule as well as other joint stabilization structure to be partially repaired, usually 4-6 weeks after the beginning of the knee function Generally, the functional exercise of knee joint should be started after 4-6 weeks, and the reconstruction of ligament should be considered after the flexion and extension function of knee joint reaches a certain range. Due to the limited autologous available materials, in general, multiple ligament injuries need to be reconstructed using allograft ligaments, allograft Achilles with Achilles tendon can reconstruct both anterior and posterior cruciate ligaments and medial and lateral collateral ligaments, which can be accomplished by surgery together, and the young people with meniscal injuries need to be stitched up, and they can return to near-normal motion after surgery, but the return of meniscal injuries can be problematic in the late stages, and in a few cases meniscal transplantation may be possible . The hospital stay is about 15 days and systematic rehabilitation after surgery takes 8-12 weeks and costs about 50-60 thousand dollars.