Week 3 - Anterior abdominal wall and hernias Flashcards Preview

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Flashcards in Week 3 - Anterior abdominal wall and hernias Deck (16):
1

What is the inguinal canal? Where is it?

-An oblique passage between the deep and superficial inguinal rings
-Lies between external oblique and internal oblique and directly above the inguinal ligament

2

Where is the inguinal ligament?

-Inferior border of aponeurosis of external oblique
-Runs from ASIS to pubic tubercle

3

What are the normal contents of the inguinal canal?

-Spermatic cord in men
-Round ligament of uterus in women
-Ilioinguinal nerve (partially)

4

What are the two potential sites of weakness in anterior abdominal wall which lead to inguinal hernias?

-Hesselbachs triangle
-Deep inguinal ring

5

What is a hernia?

-Protrusion of part of an abdominal organ through the abdominal wall

6

What is a hernial sac covered by?

-structures through which it passes
eg skin, SCT

7

Describe an indirect inguinal hernia

-Bowel pushes through deep inguinal ring travels down the inguinal canal and pushes through superficial inguinal ring to appear in scrotum or labia majora

8

Who is indirect inguinal hernia most common in?

-Men

9

Describe hesselbachs triangle

-Weak area of anterior abdominal wall defined by:
Medial border -> lateral margin of rectus sheath/linea semulunaris
Superiolateral border -> Inferior epigastric vessels
Inferior border -> Inguinal ligament

10

Describe a direct inguinal hernia

-Bowel pushes through an area in hesselbachs triangle and extends down and out of the superficial inguinal ring to appear in scrotum or labia majora

11

Describe a femoral hernia

-Bowel protrudes through femoral ring of femoral canal
-More common in females due to wider pelvis (but overall still less common than inguinal)

12

Describe an umbilical hernia

-In children it is protrusion through umbilical scar
-in adults it is protrusion through linea alba anywhere between xiphersternum and umbilicus (includes epigastric and paraumbilical hernias

13

Describe a diaphragmatic hernia

-Caused by developmental defects of the diaphragm which allows the intestine to herniate into the chest

14

Describe a hiatus hernia

-Special diagphragmatic hernia
-Can be sliding whereby gastro-oesophageal junction slides through diaphragm into chest
-Can be rolling where fundus of stomach passes into chest alongside oesophagus

15

What is an incisional hernia?

-Surgical scar breakdown due to obesity or poor abdominal musculature

16

What lines the internal surface of anterior abdominal wall?

-Parietal peritoneum