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Popliteal Cyst (Baker's Cyst)

A popliteal cyst is usually the result of another knee condition such as arthritis or torn cartilage. These conditions cause the knee to produce too much synovial (joint) fluid, leading to an out pouching of fluid in the back of the knee.

Symptoms include a feeling of fullness in the back of the knee, or a bulge, and increased pain.

Knee Pain