A knee cyst, also known as a popliteal cyst, is a fluid-filled lump that usually causes swelling behind the knee. The knee cyst can become painful when a person attempts to bend or extend the knee ...

Water on the knee, or knee effusion, is swelling that could be caused by injuries, arthritis, or infections. Learn more about ...

Another example would be an athlete with a popliteal cyst/Baker’s cyst behind the knee which started during a round of tennis. The patient pivoted and turned and the knee was injured.

Q: What is a Baker's cyst, and what is the best way to get rid of it? A: A Baker's cyst is a collection of fluid behind the knee. It was named after a British surgeon, William Baker, who described ...

Q-A bulging mass at the back of my knee that keeps growing and is now quite tender has been diagnosed as a popliteal cyst. While that may give it a name, it stills leaves me with lots of anxiety ...

Dear Reader: A Baker's cyst is an accumulation of joint fluid behind the knee. Most cysts do not cause symptoms, but, occasionally, large cysts may cause discomfort and/or stiffness.

It gets trapped there. The cyst appears as a bulge behind the knee. Small cysts are seldom troublesome, but a greatly enlarged one might impinge on nerves or blood vessels, causing pain.

Last spring, behind my right knee, I developed a Baker's cyst that broke and gave me six weeks of a very painful calf. A couple of months ago, I developed another Baker's cyst behind my left knee.

“My knee is in really good shape,” World Peace tweeted with a photo of himself holding a syringe filled with fluid. “The last two games this Bakers Cyst was tough to play with. Just drained it.

Eventually, the cyst can become large enough to restrict movement of the knee or cause pain. It can also block the flow of blood through veins behind the knee, causing the lower leg to swell.