Inguinal hernia classification: Difference between revisions
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*Direct inguinal hernias occur when abdominal contents herniate through a weak point in the fascia of the abdominal wall and into the inguinal canal. | *Direct inguinal hernias occur when abdominal contents herniate through a weak point in the fascia of the abdominal wall and into the inguinal canal. | ||
*Indirect inguinal hernias occur when abdominal contents protrude through the [[deep inguinal ring]]; this is ultimately caused by failure of embryonic closure of the internal inguinal ring. | *Indirect inguinal hernias occur when abdominal contents protrude through the [[deep inguinal ring]]; this is ultimately caused by failure of embryonic closure of the internal inguinal ring. | ||
==Subtypes of inguinal hernias== | |||
{| class="wikitable" | |||
| '''Type''' || '''Description''' || '''Relationship to [[inferior epigastric vessels]]''' || '''Covered by [[internal spermatic fascia]]?''' || '''Usual onset''' | |||
|- | |||
| [[indirect inguinal hernia]] || protrudes through the inguinal ring and is ultimately the result of the failure of embryonic closure of the internal inguinal ring after the [[testicle]] passes through it || Lateral || Yes || Congenital | |||
|- | |||
| [[direct inguinal hernia]] || enters through a weak point in the fascia of the abdominal wall || Medial|| No || Adult | |||
|} | |||
Inguinal hernias, in turn, belongs to [[groin]] hernias, which also includes [[femoral hernia]]s. A femoral hernia is not via the inguinal canal, but via the [[femoral canal]], which normally allows passage of the common [[femoral artery]] and vein from the pelvis to the leg. | |||
==Related Chapters== | ==Related Chapters== | ||
*[[Hernia classification]] | *[[Hernia classification]] | ||
Revision as of 22:43, 4 September 2012
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Classifications
There are two types of inguinal hernia, direct and indirect.
- Direct inguinal hernias occur when abdominal contents herniate through a weak point in the fascia of the abdominal wall and into the inguinal canal.
- Indirect inguinal hernias occur when abdominal contents protrude through the deep inguinal ring; this is ultimately caused by failure of embryonic closure of the internal inguinal ring.
Subtypes of inguinal hernias
| Type | Description | Relationship to inferior epigastric vessels | Covered by internal spermatic fascia? | Usual onset |
| indirect inguinal hernia | protrudes through the inguinal ring and is ultimately the result of the failure of embryonic closure of the internal inguinal ring after the testicle passes through it | Lateral | Yes | Congenital |
| direct inguinal hernia | enters through a weak point in the fascia of the abdominal wall | Medial | No | Adult |
Inguinal hernias, in turn, belongs to groin hernias, which also includes femoral hernias. A femoral hernia is not via the inguinal canal, but via the femoral canal, which normally allows passage of the common femoral artery and vein from the pelvis to the leg.