The Baker’s cyst or popliteal cyst is also known as a synovial cyst. It is a soft, fluid-filled lump in the popliteal fossa behind the knee. In the back of the knee, there is synovial tissue ...

“The most common benign cause [of behind-the-knee pain] we see is a Baker’s cyst,” Dr. Packer says. “That’s where some fluid that comes from the knee joints finds a little passageway or ...

a bulge behind the knee occurs which is very painful and is limiting to flexion (bending) of the knee. The Baker’s cyst can be quite limiting and confusing to patients as they do not understand ...