knee
Knee, commonly known as the knee, is located in the connection between the big legs. The main internal structure of the knee is the meniscus and the four ligaments. The meniscus is a piece of crescent-shaped fibrous cartilage that is cushioned at the lower end of the femur and the upper end of the tibia. The role is to cushion the knee's vibration and to avoid direct friction between the two bones. In addition, it is supported by four main ligaments. There are two on both sides of the knee, known as the medial ligament and lateral ligament, the main function is to prevent the knee axis from the other two ligaments were distributed in the knee before and after the rear, known as the anterior cruciate ligament Cruciate ligament, the role is to prevent the knee before and after the shift. ...