Rupture of medial collateral ligament of knee

The ligament is an important static stability factor of the knee joint. Its main function is to limit the guidance of the effect. When the stress on the ligament exceeds its yield point, which is the sign of complete rupture, it is often a laceration that may still maintain the general morphological continuity, but it loses its tension when it maintains the stability of the joint, and it shows vertical instability. If the violence is severe and extreme displacement of the knee joint occurs, loss of continuity of ligament morphology may occur, complete rupture, and mostly manifested as compound instability. In the acute stage, the patient's knee joint is swollen and painful, protective muscles are tense, positive signs are difficult to detect, and early diagnosis is difficult; patients with advanced stages often show varying degrees of knee instability, unstable knee joints are prone to repeated injuries, and meniscus and Shear stresses on articular cartilage increase, causing meniscus damage, intensifying articular cartilage degeneration, and secondary traumatic arthritis. Although there are many late ligament reconstruction methods, and the long-term effects are good or bad, they cannot fully restore the anatomic and physiological functions of the original ligament. Therefore, it is very important to diagnose and treat the knee ligament injury early.