Water on the knee, or knee effusion, refers to the buildup of fluid in and around the knee joint. This condition leads to a painful, swollen knee and can be caused by various factors, including ...

Of all causes, overuse is the most common reason for an infused knee. Fluid buildup is your body’s way of protecting the area from extra damage. You may have minor swelling after a vigorous activity.

You may develop fluid on the knee due to an injury or a health condition such as arthritis. Treatment can depend on the cause but may include physical therapy, medical procedures, and medication. We ...

Some amount of fluid around your knee is necessary — it helps cushion your bones and keeps the joint limber. But if too much fluid accumulates, it can lead to an effusion (or an abnormal collection of ...

The most damaging complication associated with primary total knee arthroplasty (TKA) is prosthetic joint infection. Fortunately, the infection risk is low, with an estimated 1% to 2% incidence of ...