Baker's Cyst Information

Last updated on 22 April 2019 by Danniel Jacques (B.Med.Sci UNSW)

What is a Baker’s Cyst?

Baker's Cyst

A baker cyst is a painful condition which can be characterised by swelling in the back of the knee.

This swelling occurs due to inflammation in the synovial joint which encapsulates the knee resulting in the out-pouching of fluid into a little balloon type sac from the synovial lining.

When this condition develops, synovial fluid (which is normally contained in a tough capsule that encases the knee joint) collects in the baker’s cyst and bulges behind the knee.

This is also called a “popliteal cyst” as it directly affects the popliteal region of the knee (that shallow depression located behind the knee joints).

If left untreated it is possible for it to rupture. A ruptured baker’s cyst may then cause the collected synovial fluid to transfer and travel down the calf muscles of the legs. This can then trigger rapid swelling and discomfort of the leg which may then cause further complications.

What Causes a Baker’s Cyst?

Baker’s cysts are quite common and can be caused by nearly any joint-related inflammation. Some of the most common causes may include;

  • A micro tear in the knee’s meniscal cartilage
  • Repetitive stress injury.
  • Wear & tear in the knee (which is more common in older adults)
  • Injury to the anterior cruciate ligament of the knee (ACL injury)
  • Sports-related injury that affects the knee
  • The type of work that a person does may also make them more susceptible. This include jobs that involve being on your knees, such as a gardener or carpenter. Also such jobs that require long shifts without sitting or unusual weight loading through the knees such as nursing.

A baker’s cyst is also know as a >> popliteal cyst

What are the Symptoms of a Baker’s Cyst?

Symptoms may include visible swelling or protrusion on the back of the knee (which can be either with our without pain), constant and prolonged knee pain, and tightness at the back of the knee or simply a feeling of tenderness at the back of the knee.

If left untreated a baker’s cyst may actually rupture. A ruptured or burst baker’s cyst can cause a lot of pain and discomfort and can present very similarly as a blood clot as there will also often be calf related pain.

How is a Baker’s Cyst Diagnosed?

It is always best to visit a qualified medical professional if you suspect that you have either a baker’s cyst or feel that your baker’s cyst may have ruptured or burst.

Your doctor will likely require you to have an ultrasound which will be able to confirm a diagnosis of baker’s cyst and also importantly rule out or alert the doctor of any existence of a blood clot.

If there is an infection suspected then a blood test and maybe an aspiration of the synovial fluid may be required for testing and culturing. In some cases an x-ray and or MRI may also be required to rule out any co-exist conditions that may have contributed to the condition.

Next Page: Learn the answers to the most common questions asked about treating a baker’s cyst, including:

Testimonials

Real accounts by real people. Hear what they have to say!

The Osmo patch definitely helps my bakers cyst( behind my left knee)! It is temporary, but the relief is enormous! I use it every few weeks and the swelling and discomfort abate greatly! Thank you!

- Linda M, California, United States

Hello! I wanted to write to let you know that I truly feel that a combination of your OSMO patches and infrared laser treatments on my knee have nearly cured my knee.  I had a probable torn miniscus, and had developed a baker’s cyst behind the knee from the injury.  I am a very active […]

- Linda M, Michigan, United States

Hi Toky Sorry my delay in responding to your email.  I have been off line.  Thank you so much for the patches, I have been putting up with pain for months since a fall. I have used them on my knees the last two nights, what a difference, I cannot believe it…  Lucky timing my […]

- Judith W, Palmerston North, New Zealand

Dear Toky, Some time ago I corresponded with you and was duly sent 10 patches to try for bursitis of the knee. As I am a Carmelite Nun, our life is dedicated to prayer so kneeling is rather important!!    I kept off the knee for a long time before trying the patches and found it […]

- Carmelite Sister (Sr), Carmelite Monastery, Christchurch, New Zealand

I have been meaning to write you for some time now and tell you how great the OSMO patches have worked for me. 

I have Baker’s cyst that have developed over the past four years on both knees and have gone to an Orthopedic Specialist to have them drained via syringe numerous times, plus the cortisone shots.  Researching the topic one day, I discovered your website and hesitantly ordered the OSMO patches.  Just last week, I re-ordered your patches for the third time…. they work amazing. There is such a difference when I wake up in the morning after sleeping with them on my knees. 

The fluid is drawn out and mobility is greatly improved.  I will probably need surgery one day to repair torn cartilage in my knees, but these are a greatly helping me with the swelling/fluid build up like nothing else has before.
 
Thank you for developing such a wonderful product and for the prompt and efficient service when placing an order.  They are really helping me.

- Janet R, Georgia, United States

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