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==Introduction==
==Description==
[[Image:hernial sac.jpg|thumb|right|150px|Diagram of a hernial sac (Copyright Elspeth Milne 2007)]]
[[Image:hernial sac.jpg|thumb|right|150px|Diagram of a hernial sac (Copyright Elspeth Milne 2007)]]
A hernia is defined as the displacement of an organ through a normal aperture (a '''true hernia''') or pathological aperture ('''false hernia''' or '''rupture'''). The mobile organs of the abdomen are most commonly displaced through apertures in the abdominal wall, diaphragm, inguinal canal or femoral canal.
A hernia is defined as the displacement of an organ through a normal aperture (a '''true hernia''') or pathological aperture ('''false hernia''' or '''rupture'''). The mobile organs of the abdomen are most commonly displaced through apertures in the abdominal wall, diaphragm, inguinal canal or femoral canal.
*'''Epiploic foramen entrapment''' is a form of internal hernia affecting horses. Loops of small intestine may become trapped within the epiploic foramen and omental bursa causing complete intestinal obstruction and severe colic. Anecdotally, horses which 'windsuck' are at particular risk of this form of colic and it requires urgent surgical correction.
*'''Epiploic foramen entrapment''' is a form of internal hernia affecting horses. Loops of small intestine may become trapped within the epiploic foramen and omental bursa causing complete intestinal obstruction and severe colic. Anecdotally, horses which 'windsuck' are at particular risk of this form of colic and it requires urgent surgical correction.
*'''[[Richter's Hernia|Richter's hernia]]''' is a rare form of hernia in which only one wall of the small intestine is trapped in the hernial sac, resulting in a partial intestinal obstruction.
*'''[[Richter's Hernia|Richter's hernia]]''' is a rare form of hernia in which only one wall of the small intestine is trapped in the hernial sac, resulting in a partial intestinal obstruction.
{{Learning
|Vetstream = [https://www.vetstream.com/canis/search?s=hernia Hernia]
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=hernia&occuring1=title&rowId=2&options2=AND&q2=&occuring2=freetext&rowId=3&options3=AND&q3=&occuring3=freetext&publishedstart=2000&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all&x=43&y=15 Hernia publications since 2000]
|full text = [http://www.cabi.org/cabdirect/FullTextPDF/2010/20103304730.pdf '''Biomaterials in the reconstruction of abdominal wall defects in animals: a review.''' Sharma, A. K.; Naveen Kumar; Gangwar, A. K.; Maiti, S. K.; SAARC Agricultural Information Centre (SAIC), Dhaka, Bangladesh, SAARC Journal of Agriculture, 2003, 1, pp 85-98, many ref.]
}}
==References==
==References==
Fossum, T. W. et. al. (2007) '''Small Animal Surgery (Third Edition)''' ''Mosby Elsevier''
Fossum, T. W. et. al. (2007) '''Small Animal Surgery (Third Edition)''' ''Mosby Elsevier''
[http://w3.vet.cornell.edu/nst/nst.asp?Fun=Image&imgID=22114 Image of congenital umbilical hernia in a pig from Cornell Veterinary Medicine]
[http://w3.vet.cornell.edu/nst/nst.asp?Fun=Image&imgID=22114 Image of congenital umbilical hernia in a pig from Cornell Veterinary Medicine]
[[Category:Peritoneal_Cavity_-_Developmental_Pathology]][[Category:Dog]][[Category:Cat]][[Category:Donkey]][[Category:Cattle]][[Category:Sheep]]
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[[Category:Intestine_-_Physical_Disturbances]]
[[Category:Peritoneal_Cavity_-_Developmental_Pathology]][[Category:Peritoneal Cavity Diseases - Dog]][[Category:Peritoneal Cavity Diseases - Cat]][[Category:Donkey]][[Category:Peritoneal Diseases - Cattle]][[Category:Peritoneal Diseases - Sheep]]
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[[Category:Expert_Review]]
[[Category:Peritoneal_Cavity_Disorders_-_Horse]]
[[Category:Peritoneal Cavity Diseases - Horse]]