Baker's cyst

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Baker's Cyst

A Baker's cyst, also known as a popliteal cyst (pronounced pop-li-te-al sist), is a fluid-filled sac that forms behind the knee. It is named after the British surgeon William Morrant Baker, who first described it.

Etymology

The term "Baker's cyst" is named after William Morrant Baker, a 19th-century British surgeon who first described this condition. The term "cyst" comes from the Greek word "kystis," meaning "bladder" or "sac."

Definition

A Baker's cyst is a swelling in the space behind the knee (the popliteal fossa) that is filled with synovial fluid, a lubricating fluid that is usually found inside the knee joint. It often results from a problem with the knee joint, such as arthritis or a cartilage tear.

Symptoms

Symptoms of a Baker's cyst can include pain, swelling, and stiffness in the knee, and a sensation of tightness or fullness behind the knee, especially when the leg is straightened or fully extended.

Causes

Baker's cysts are usually caused by an underlying problem with the knee joint, such as osteoarthritis, rheumatoid arthritis, or a cartilage tear. These conditions can cause the knee to produce too much synovial fluid, leading to a Baker's cyst.

Treatment

Treatment for a Baker's cyst typically involves treating the underlying knee problem. This may include physical therapy, medication, or in some cases, surgery.

Related Terms

External links

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