Synovial bursa




"Bursae" redirects here. For other uses, see Bursa (disambiguation).




























Synovial Bursa

Joint.svg
Typical joint


Prepatellar bursa.png
Within the knee joint: bursae visible top right, middle right and bottom right

Details
Identifiers
Latin
bursa synovialis
MeSH
D002061
TA
A03.0.00.039
TH
H3.03.00.0.00039
FMA
9692

Anatomical terminology
[edit on Wikidata]


A synovial bursa (plural bursae or bursas) is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous synovial fluid (similar in consistency to that of a raw egg white). It provides a cushion between bones and tendons and/or muscles around a joint. This helps to reduce friction between the bones and allows free movement. Bursae are found around most major joints of the body.




Contents






  • 1 Structure


  • 2 Clinical significance


  • 3 History


    • 3.1 Etymology




  • 4 See also


  • 5 External links





Structure


There are four types of bursa: adventitious, subcutaneous, synovial, and sub-muscular. Among these, only adventitious is non-native. When any surface of the body is subjected to repeated stress, an adventitious bursa develops under it. Examples are Students' elbow and bunion.



Clinical significance


Infection or irritation of a bursa leads to bursitis (inflammation of a bursa). The general term for disease of bursae is "bursopathy."



History



Etymology


Bursa is Medieval Latin for "purse", so named for the resemblance of an anatomical bursa to a purse. Bursae or bursas is its plural form.



See also




  • Bursa of Fabricius (a lymphatic organ in birds)

  • Bursectomy

  • Knee bursae



External links






Imaging of the Bursae via Pub Med https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3177464/



  • Bursa

  • Diagram of elbow with olecranon bursa










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