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What causes a Baker's cyst?

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Swelling in the knee causes these cysts. This happens when the fluid that lubricates your knee joint increases. When pressure builds up, fluid squeezes into the back of the knee and it creates the lump or cyst.

It’s common with all forms of arthritis. A Baker’s cyst can also be brought on by a sports-related injury or blow to the knee. Gout is another common cause. That’s a type of arthritis that results from the build-up of uric acid -- a waste product -- in the blood.

From: Baker’s Cyst (Popliteal Cyst) WebMD Medical Reference

SOURCES:

Mayo Clinic: “Diseases and Conditions: Baker’s Cyst.”

John Hopkins Arthritis Center: “Baker’s Cysts and Fullness in the Back of the Knee.”

Gov.UK: “Baker’s Cyst.”

Harvard Medical School: “Ask the Doctor: How Do You Treat a Baker’s Cyst?”

Orthopedics : “Popliteal Cysts: A Current Review.”

Saint Luke’s Health System: “Baker’s Cyst.”

Reviewed by David Zelman on May 8, 2019

SOURCES:

Mayo Clinic: “Diseases and Conditions: Baker’s Cyst.”

John Hopkins Arthritis Center: “Baker’s Cysts and Fullness in the Back of the Knee.”

Gov.UK: “Baker’s Cyst.”

Harvard Medical School: “Ask the Doctor: How Do You Treat a Baker’s Cyst?”

Orthopedics : “Popliteal Cysts: A Current Review.”

Saint Luke’s Health System: “Baker’s Cyst.”

Reviewed by David Zelman on May 8, 2019

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What are the symptoms of a Baker's cyst?

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