Popliteal cyst

What is Popliteal cyst?

A Baker's cyst, also known as a popliteal cyst, is a benign swelling of the semimembranosus or more rarely some other synovial bursa found behind the knee joint. It is named after the surgeon who first described it, William Morrant Baker (1838–1896). This is not a "true" cyst, as an open communication with the synovial sac is often maintained.

Questions and answers on "Popliteal cyst"

I am a very avid cyclist......however this past weekend I played 3 games of Basketball. Now have reletively large "knot" right behind my knee....

doctor1 MD

Thanks for writing in.
Given that you have been very active, the “knot” behind your knee is suggestive of a popliteal cyst or Baker's cyst,...

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My husband has 4 popliteal cysts in his left knee, which causes him excruciating pain, just to stand. The VA Ortho Clinic has refused to do an...

doctor1 MD


I have studied your case.

If you have persistent pain and large swelling then you may need surgical excision.

You may need arthroscopic/open...

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Helo I have knee pain and swelling on my knee and calf I can't walk properly and can't bend my leg it's very pain full situation I'm 30 yr old and...

doctor1 MD

Hello, swelling in calf can be due to a problem called popliteal cyst or Baker's cyst which generally occurs in long standing arthritis. Knee...

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