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What is a cruciate ligament injury?

ACL is called each of the two strings that attach the femur bone of the tibia bone in the depth of the knee joint. The ACL starts in the back of the femur and the front ends of the tibia. The back has a cross direction, ie, starts at the front of the femoral bone, and ends in the back of the tibia. Instead, the collateral ligaments are arranged outside the joint.

The function of these strings is to stabilize the knee, preventing the leg from moving forward or backward, when under a strain.

Injuries to the ligaments are called sprains, and torn them up. They can be in one of their fibers (partial tear) or all (complete tear). The severity of the sprain is indicated by the degree of abnormal mobility of the knee to explore.

Why is the injury of the cruciate ligaments?

The ACL is most often broken, and usually occurs in athletes who suffer a sprain, often by moving the body on the leg that is fixed on the floor: landing from a jump, blocked a ski, strong input of an opponent in football, and so on.

The posterior cruciate breaks less often, and more frequent traffic accidents, in which the front of the tibial bone is hit. The tibia is moved back and break the cross that tries to stop this movement: for example, shocks to the bumper of the car or the dashboard, or falls of bike.

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