Powered by


                    Home  |  Forums  |  Humor  |  Advertising  |  Contact
   Ask a Doctor

   News via RSS







   Forum Archives





















   Primary Care






   Other Sections


   Research Tools

   Medical Tutorials

   Medical Software




Baker cyst (popliteal cyst)

A Baker cyst, also called a popliteal cyst, is swelling caused by knee joint fluid protruding to the back of the knee (popliteal area of the knee).

A Baker's cyst is usually the result of a problem with your knee joint, such as arthritis or a cartilage tear. Both conditions can cause your knee to produce too much fluid, which can lead to a Baker's cyst. Treating the larger problem usually relieves the swelling and discomfort of a Baker's cyst.

Symptoms and signs

These cysts occur most often in adults between 55 and 70, and in children between 4 and 7 years old.

It may be asymptomatic however, usually there is:

  • Swelling behind the knee
  • Pain and tightness


A noninvasive imaging scan, such as an ultrasound or a magnetic resonance imaging (MRI) scan, can help distinguish between a simple cyst and a tumor.


It is important to treat the cause of the cyst besides the cyst itself. By removing the cyst without the removal of the initiating cause there will remain a chance that the cyst may recur.

  • Fluid drainage is associated with a high recurrence rate.
  • Injection of corticosteroids in the cyst usually decreases the amount of fluid in the cyst and may decrease the pain but doesn't prevent recurrences.

Surgical excision (removal) of the cyst if it is large enough to cause distress or removal of the torn ligament if that has been determined to be the cause of the cyst.

advertisement.gif (61x7 -- 0 bytes)

Are you a doctor or a nurse?

Do you want to join the Doctors Lounge online medical community?

Participate in editorial activities (publish, peer review, edit) and give a helping hand to the largest online community of patients.

Click on the link below to see the requirements:

Doctors Lounge Membership Application

previous.gif (72x17 -- 347 bytes) next.gif (72x17 -- 277 bytes)

 advertisement.gif (61x7 -- 0 bytes)



We subscribe to the HONcode principles of the HON Foundation. Click to verify.
We subscribe to the HONcode principles. Verify here

Privacy Statement | Terms & Conditions | Editorial Board | About us
Copyright 2001-2012 DoctorsLounge. All rights reserved.