Synovial bursa
 | This article needs additional citations for verification. (September 2012) |
| Synovial bursa | |
|---|---|
 Typical joint | |
 Within the knee joint: bursae visible top right, middle right and bottom right | |
| Details | |
| Identifiers | |
| Latin | bursa synovialis |
| MeSH | D002061 |
| TA98 | A03.0.00.039 A04.8.01.004 |
| TA2 | 2028 |
| TH | H3.03.00.0.00039 |
| FMA | 9692 |
| Anatomical terminology | |
A synovial bursa, usually simply bursa (pl.: 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.
Structure
Based on location, there are three types of bursa: subcutaneous, submuscular and subtendinous. A subcutaneous bursa is located between the skin and an underlying bone. It allows skin to move smoothly over the bone. Examples include the
An adventitious bursa is a non-native bursa. When any surface of the body is subjected to repeated stress, an adventitious bursa develops under it. Examples are student's 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 bag-like function of an anatomical bursa. Bursae or bursas is its plural form.
See also
- Bursa of Fabricius (a lymphatic organ in birds)
- Bursectomy
- Knee bursae
- Shoulder joint#Bursae
External links
- Hirji, Zameer; Hunjun, Jaspal S; Choudur, Hema N (2 May 2011). "Imaging of the Bursae". Journal of Clinical Imaging Science. 1: 22. PMID 21966619.
- Bursa
- Diagram of elbow with olecranon bursa
Reference
- ISBN 978-1-947172-04-3. Retrieved 14 May 2023.
Source text
This article incorporates text from a free content work. Licensed under CC BY 4.0. Text taken from Anatomy and Physiology, J. Gordon Betts et al, Openstax.
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