Synovial bursa

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Synovial Bursa
Gray350.png
Within the knee joint: bursae visible top right and bottom right
Joint.png
Typical joint
Latinbursa synovialis
Gray'sp.283
MeSHBursa,+Synovial
CodeTH H3.03.00.0.00039
 
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Synovial Bursa
Gray350.png
Within the knee joint: bursae visible top right and bottom right
Joint.png
Typical joint
Latinbursa synovialis
Gray'sp.283
MeSHBursa,+Synovial
CodeTH H3.03.00.0.00039

A bursa (plural bursae) is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous 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 filled with synovial fluid and are found around most major joints of the body.

Etymology[edit]

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

Types[edit]

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.

Pathology[edit]

Infection or irritation of a bursa leads to bursitis (inflammation of a bursa). The general term for disease of bursae is "bursopathy". Current medical studies have no specific knowledge of the entire bursae system.

See also[edit]

External links[edit]