What's a baker cyst?

Cyst behind the knee: A baker's cyst is classically a fluid filled cyst behind the knee. The cyst usually communicates with the knee via a small hole in the capsule or via the base of a tear in a meniscus. The knee makes fluid normally, but osteoarthritis or a mensical tear can cause an increase in fluid production, thus increasing pressure. The pathway of least resistance is out the back of the knee where a cyst forms.

Bakers cyst: A bakers cyst is a collection of fluid behind the knee usually secondary to chronic tendonitis or arthritic degeneration within the knee1

Pocket of fluid: A baker's cyst is a pocket of fluid that can develop behind your knee when your knee is hurt like arthritis or a cartilage tear. You can feel pain or tightness. Treatment depends on what's causing it. Please talk with your doc about what to do next.

Back of knee cyst: A cyst in back of knee.