What causes knee to buckle?

Sometimes my knee clicks and then gives out from underneath me. What causes this kind of buckling?

Some doctors would say your knee is unstable. The true definition of instability is when the kneecap called the patella dislocates or shifts too far to one side.

Symptoms of buckling, collapsing, or giving way are more often caused by weakness. The quadriceps muscle along the front of the thigh helps hold the knee straight. Flexion or bending the knee without warning is a sign of quadriceps insufficiency.

Such giving way or insufficiency occurs as a result of pain, deconditioning, or swelling inside the joint. When the doctor examines you he or she will try and decide if your symptoms are coming from outside or inside the joint. If the problem is outside the knee joint then is it caused by the patella or something else?

A complete diagnosis may require exam, X-rays, and even arthroscopic surgery.

For more information on this subject, call The Zehr Center for Orthopaedics at 239-596-0100 or visit www.zehrcenter.com. The information contained herein is compiled from a variety of sources. It may not be complete or timely. It does not cover all diseases, physical conditions, ailments or treatments. The information should NOT be used in place of a visit with your healthcare provider, nor should you disregard the advice of your health care provider because of any information you read in this topic.

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