Leny AnjaniHernia is a protrusion of a viscus through an
abnormal opening in the wall of a cavity in which it is a contained
DEFINITIONExternal hernia : The sac protrudes completely through
the abdominal wall. Examples: Inguinal (indirect and direct),
Femoral umbilical, and epigestric.Intraparietal hernia: The sac is
contained with in the abdominal wall. Example: Spigelian
hernia.Internal hernia: The sac is within the visceral cavity.
Example: Diaphragmatic hernia (congenital or acquired) and the
small intestine hemiahrg in the paraduodenal pouch.Classification
of herniasReducible hernia: The protruding viscus can be returned
to the abdomen.Incarcerated (irreducible) hernia: The protruding
viscus cannot be returned to the abdomen.Strangulated hernia: The
vascularity of the viscus is compromised surgical emergency
Incidence of inguinal hernias in males has a bimodal
distribution with peaks before 1 year of age and then again after
age 40. When subdivided into age groups, those aged 25 to 34 years
had a lifetime prevalence rate of 15% whereas those aged 75 years
and over had a rate of 47%
Hernia inguinal Table 37-2 Presumed Causes of Groin
Herniation
