A Baker’s Cyst, also known as a popliteal cyst, is a fluid-filled swelling that causes a lump at the back of the knee. This leads to tightness and restricted movement. The Baker’s Cyst can be painful when you bend or straighten your knee. ? Causes of a Baker’s Cyst Synovial fluid is a clear liquid that normally circulates through the spaces in your knee joint. Sometimes the knee produces too much of this fluid. The increasing pressure forces the fluid to the back of the knee via a one-way valve. This creates a bulge. This swelling of the knee causes a Baker’s Cyst to form. The most common causes of a Baker’s Cyst are: damage to the knee’s cartilage (meniscus) arthritis of the knee rheumatoid arthritis other knee conditions that cause joint inflammation ? Symptoms of a Baker’s Cyst Some patients may have no pain and may not even notice the…
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