Baker's Cysts

A Baker's cyst, also known as a popliteal cyst, is a fluid-filled swelling that causes a bulge and a feeling of tightness behind your knee. It might cause pain when you extend your knee or when you're active.

What is a Baker's Cyst?

A Baker's cyst is a fluid-filled swelling that forms in the popliteal space at the back of the knee. This type of cyst is usually connected to the joint by a slender stalk, allowing joint fluid to flow into the cyst. The cyst can become inflamed and swollen due to various factors such as arthritis, injury, or overuse.

Symptoms of Baker's Cysts

The symptoms of a Baker's cyst may include:

  • A bulge or swelling behind the knee that may be tender to the touch
  • Pain when extending the knee, such as when standing up from a sitting position
  • Pain when bending the knee, such as when squatting or kneeling
  • Stiffness and limited mobility in the knee joint
  • A feeling of tightness or fullness behind the knee
  • Sometimes, a Baker's cyst can rupture, causing fluid to leak into the calf, leading to swelling, redness, and pain in the lower leg

Causes of Baker's Cysts

Baker's cysts are often caused by:

  • Arthritis, such as rheumatoid arthritis or osteoarthritis, which can cause joint inflammation and fluid buildup
  • Knee injuries, such as a blow to the knee or a sudden twisting motion, which can cause joint instability and fluid leakage
  • Overuse or repetitive strain on the knee joint, which can lead to wear and tear on the joint cartilage and ligaments
  • Other conditions, such as meniscal tears or ligament sprains, which can also contribute to the development of a Baker's cyst

Treatments for Baker's Cysts

Treatment options for Baker's cysts may include:

  • Conservative management: Rest, ice, compression, and elevation (RICE) to reduce pain and swelling
  • Physical therapy: Exercises to improve knee mobility and strength, as well as to reduce stiffness and pain
  • Pain relief medications: Over-the-counter or prescription medications such as ibuprofen or naproxen to reduce pain and inflammation
  • Corticosteroid injections: Injecting a corticosteroid into the cyst to reduce inflammation and swelling
  • Drainage: Using a needle to drain the fluid from the cyst, often followed by corticosteroid injection
  • Surgery: In some cases, surgical removal of the cyst may be necessary, especially if it is large or causing significant symptoms

Prevention of Baker's Cysts

To prevent Baker's cysts, it's essential to:

  • Maintain a healthy weight to reduce stress on the knee joint
  • Engage in regular exercise to strengthen the muscles around the knee
  • Avoid overuse or repetitive strain on the knee joint
  • Use proper technique when performing activities that involve bending or twisting the knee
  • Wear protective gear, such as knee pads, when participating in high-risk activities

Article last updated on: 11th April 2025.
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