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Knee, Ligament Injury
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Overview of Knee, Ligament Injury 
There are four ligaments that help in stabilizing the knee. The most important one, and the one that usually produces clinical symptoms, is the anterior cruciate ligament. Its function is to prevent abnormal anterior displacement and rotation of the lower leg with respect to the thigh. It most commonly is injured in activities where their is a twisting between the leg and the body.
Causes of Knee, Ligament Injury
The ligaments of the knee are most often injured with trauma. Direct impact to the knee is common in activities where the foot is planted and these is a twisting between the leg and the body. This commonly occurs with basketball, football, skiing, snowboarding, soccer and rugby. Injuries may be partial or complete. The anterior cruciate ligament is most commonly injured. Injury to the cartilage that composes the knee joint may occur at the some time. A recent injury of the anterior cruciate ligament increases the risk to developing cartilage injuries. This is particularly true in someone who has had several knee injuries over several years.
Signs and Symptoms of Knee, Ligament Injury
There is commonly a popping sensation in the knee when an anterior cruciate ligament tear occurs. There is swelling and pain in the knee. Walking may be difficult due to pain and a sense of instability. The knee may feel like its going to give out.
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Medical Content Last Updated on 07/12/2008
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