lecture 1 groin Flashcards
inguinal region
junction between anterior abdominal wall and thigh; area between ASIS and pubic tubercle
anterior abdominal wall
weakened in this region
clinical importance - popular question to describe walls of canal
potential site for most abdominal hernias (4 walls of femoral (lymphatics) and inquinal canal): male (testes outside) > female (ovaries inside)
anatomical importance
structures exit and enter abdominal cavity; femoral sheath covers femoral artery and vein and canal (canal not part of artery and sheath), nerve outside of sheath
inguinal canal
testis and spermatic cord descend from abdomen into scrotum via developing inguinal canal; in female uterine round ligament descends through developing inguinal canal
femoral canal
below inguinal ligament through which femoral artery and vein pass; medial compartment of femoral sheath (lymphatics through); artery and vein lateral to canal
define hernia
condition which part/whole of organ or tissue abnormally protrude through wall of structure containing organ/tissue
anatomy of hernia
abdominal sac, neck of hernia between abdominal wall with defect, hernia coverings (skin) so appears large lump, intestinal loop contains contents of hernial sac (e.g. bowel, bladder)
clinical signs and symptoms of hernia
lump/protrusion from groin, intermittently/persistently, painless/painful and uncomfortable, may be reducible or irreducible, may be strangulated with tissue death - associated with vomiting, constipation and intestinal obstruction - emergency to remove section of gut as will never recover
facts about hernias in groin
slide 33; iguinal hernias > femoral hernias
inguinal hernias
indirect or direct
femoral hernia
slide 34
inguinal canal
slide 35 - landmarks, formation and causes of hernia
males: genital branch of genito-femoral nerve also
female: genital branch of genito-femoral nerve also
anterior wall
3 areas of anterio-abdominal muscles
floor
37
roof
37
posterior wall
37
conjoint tendon
lowest fibres of internal oblique aponeurosis and similar fibres of transversus abdominis aponeurosis join to form conjoint tendon attached medially to linea alba
direct - acquired
tends to go through Hesselbach’s (inguinal) triangle which is awlays medial to inferior epigastric vessels
indirect - congenital - slide 40
always an internal ring which is lateral to inferior epigastric vessels; through the canal and though upper ring?
direct
older age as weaker, posterior wall of canal, chronic straining and weak masculature; hernia path straigh through posterior wall of inguinal canal
Hasselbach’s triangle
3 structures: rectus abdominis muscle, inferior epigastric vessels, inguinal ligament
indirect
most common, younger, indirect path, dilated deep ring, enters deep ring then passes through inguinal canal, external inguinal ring and scrotum
femoral hernias
slide 47
femoral canal borders
superior: inguinal ligament, inferior: pectineus fascia, medial: lacunar ligament, lateral: femoral vein
femoral hernias on examination
irreducible - can’t be pushed back, hot and painful if strangulated, distinguished from inguinal as appear below and lateral to pubic tubercle (inguinal are above and medial to pubic pubic tubercle)