DEAR MAYO CLINIC: I am a 59-year-old man who had a Baker’s cyst 20 years ago. It returned three years ago. I had surgery, which was supposed to take care of things. I have had it drained twice, only ...

A Baker’s cyst, or popliteal cyst, is a fluid filled swelling that develops on the back of a person’s knee. Occasionally, Baker’s cysts may rupture, potentially leading to pain and swelling. Baker’s ...