A Baker cyst is a small, fluid-filled lump that forms on the back of your knee. Arthritis and knee injuries are the most common causes.

A Baker cyst is a fluid-filled growth behind the knee. It causes a bulge and a feeling of tightness. Also called a popliteal (pop-luh-TEE-ul) cyst, a Baker cyst sometime causes pain. The pain can get worse …

Baker’s cysts, also known as popliteal cysts, form a lump at the back of the knee that can cause stiffness and discomfort. They typically result from a problem inside the knee joint, such as …

Feb 19, 2025 · What Is a Baker’s Cyst? A Baker’s cyst is a fluid-filled sac behind your knee. It often causes a bulge and a feeling of tightness. You might hear your doctor call it a popliteal cyst.

Feb 17, 2025 · In children, popliteal cysts are usually a primary process, arising directly from the gastrocnemius-semimembranosus bursa; they do not communicate with the joint space. The …

Find out what a Baker's cyst (popliteal cyst) is, what you can do to treat one if it's causing you problems and when to get help from a GP.

Feb 9, 2024 · Summary Popliteal cyst, an accumulation of synovial fluid, is common. It is usually the result of a knee joint abnormality such as arthritis or a cartilage tear. May present with swelling or …

In adults, Baker's cysts usually arise from almost any form of knee arthritis (e.g., rheumatoid arthritis) or cartilage (particularly a meniscus) tear. Baker's cysts in children do not point to underlying joint disease.

Mar 4, 2026 · A Baker's cyst — also called a popliteal cyst — is a fluid-filled swelling that develops in the back of the knee. Named after the British surgeon Dr. William Baker, who first described the …

A Baker's cyst, popliteal cyst, is a fluid-filled cyst on the back of the knee. Learn about Baker's cyst causes, symptoms, diagnosis, and treatment.