A bursa is a lubricated sac or pocket that exists within mobile tissues to facilitate a limb's movement.

Page updated September 2023 by Dr Sheila Strover (Clinical Editor)

bursae of the knee
Bursae (plural) are usually closely related to tendons where there is a lot of frictional movement.


Bursae of the knee

In the knee there are several bursae (plural of bursa), the main ones being:

Occasionally bursae become inflamed and distended with fluid. They can also become infected. The condition of an inflamed bursa is called bursitis.

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Forum discussions

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Peer-reviewed papers

  • Bursae around the knee joints

    Citation: Chatra PS. Bursae around the knee joints. Indian J Radiol Imaging. 2012 Jan;22(1):27-30. doi: 10.4103/0971-3026.95400. PMID: 22623812; PMCID: PMC3354353.

    Quote: "Many different types of bursae are seen around the knee joint. Thorough knowledge of the anatomy of the region is of utmost importance for arriving at a correct diagnosis.

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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...