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 ...

If your knee is swollen, it's also called a knee effusion. Swelling happens when fluid builds up in the knee joint. Sometimes a knee effusion is referred to as “water on the knee,” but that is not a ...

Bursae are fluid-filled sacs in areas of the body that facilitate movement. The knee has several bursae and conditions such as bursitis can impact the bursa in the knee. The body’s musculoskeletal ...

SEATTLE – About 54 million Americans suffer from aches and pains of arthritis. Treatments range from pain medications to injections to surgery. But now there's a new option and it comes from the fluid ...

A Baker’s cyst is a sac of fluid that forms behind the knee. Although they often resolve independently, exercises, home remedies, and other treatments may be required if they are painful or limit ...