Knee ligament injury

Knee ligament injury is a type of disease that refers to injuries to the four major ligaments in the knee joint: the medial collateral ligament, lateral collateral ligament, anterior cruciate ligament, and posterior cruciate ligament. These are collectively referred to as knee ligament injuries. Knee ligament injuries are common in sports trauma, mainly presenting as knee pain, swelling, and limited movement. If one or more ligaments are ruptured, knee instability may occur. According to the degree of injury, it can be divided into three grades: Grade I injury (mild injury): A small number of ligament fibers are torn, with local tenderness but no joint instability. Grade II injury (moderate injury): More ligament fibers are torn, accompanied by more severe functional impairment and joint reaction, with mild to moderate joint instability. Grade III injury (severe injury): Complete rupture of the ligament, accompanied by significant joint instability.