Although the articular structure of the knee joint is unstable, the surrounding ligaments and muscles in the anterior compartment are relatively strong, hence dislocation of the knee joint is relatively rare. Occasional dislocation may occur due to strong direct violence impacting the upper end of the tibia or indirect violence causing rotational or hyperextensional injury to the knee joint, resulting in the upper end of the tibia dislocating posteriorly and anteriorly. In cases of complete dislocation, not only does the joint capsule rupture, but also the cruciate ligaments, lateral and medial collateral ligaments, menisci, and tears in the surrounding muscles; even compound fractures of the tibial spine, tibial tuberosity avulsion fractures, and patellar fractures may occur. In severe medial dislocations, damage to the common peroneal nerve due to traction may occur. Severe posterior dislocations can lead to rupture, thrombosis, and compression of the popliteal artery and vein, causing limb necrosis and ischemic contracture.