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Symptoms
By Mayo Clinic staffSigns and symptoms of water on the knee depend on the cause of excess fluid buildup in the knee joint. These may include:
- Pain. With osteoarthritis, pain occurs when bearing weight. The pain typically subsides with rest.
- Swelling. One knee may appear larger than the other. Puffiness around the bony parts of your knee appears prominent when compared with your other knee.
- Stiffness. When your knee joint contains excess fluid, your range of motion may be limited. In other words, you can't bend or straighten your knee as far as you normally could.
- Bruising. If you've injured your knee, you may note bruising on the front, sides or behind your knee. Bearing weight on your knee joint may be impossible and the pain unbearable.
