A member asked:

I have swelling in the back and side of my knee?

A doctor has provided 1 answer

Commonly a cyst: This can be from many things but if you have an internal knee problem like a meniscus tear or wear on your cartilage, you joint can make extra fluid and this can escape out the back of the knee joint and create a space filled with joint fluid called a poplital (or baker's) cyst. Get evaluated by your doctor first and get a diagnosis.

Answered 2/24/2018

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