University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

433

Pages:

6
Author:

Mariam A. A.

ANATOMY OF THE INGUINAL REGION Inguinal (Groin) Region • • • • • Located at the junction of anterior abdominal wall and thigh Lateral to the pubic region Contains deep ring of inguinal canal Weakness cause by developmental changes Diverticulum and inguinal hernia can occur here Descent of the Gonads • • • • • - Tests and ovaries high in posterior abdominal wall Formation of the peritoneal outpouching Testis is never in the processus vaginalis A covering from the transversus abdominis muscle is not acquired Descends of the ovary Descends to level of pelvic brim Ligaments attach ovary to uterus ✓ Prevents further descent Round ligament passes through inguinal canal to labium majora Inguinal canal and ligament • Inguinal canal - • Slit like passage parallel to inguinal ligament Anterior wall of inguinal canal ✓ Aponeurosis of external oblique and muscular fibres of internal oblique medially Inguinal ligament - Deep inguinal ligament is an evagination of the transverse fascia ✓ Middle of inguinal ligament and lateral to the inferior epigastric vessels ✓ Transverse fascia forms inner of spermatic cord or round ligament ✓ Internal oblique muscle reinforces the deep inguinal ring and provides cremasteric layer ➢ Cremasteric fascia envelopes contents of canal -> cremasteric muscle - Superficial inguinal ring ✓ Opening in the external oblique aponeurosis ✓ Base of superficial ring is formed by the pubic crest, side by medial and lateral crura Structures forming the inguinal canal • Boundaries • Lateral third • Middle third • Medial third • Posterior wall • Transverse fascia • Transverse fascia • • Anterior wall • • Aponeurosis of external oblique • • Roof • • Floor • Internal oblique muscle and transversus abdominis muscle Inguinal ligament • • Aponeurosis of external oblique and internal oblique Internal oblique muscle and transverses abdominis muscle Inguinal ligament Transverse fascia and cojoint tendon Aponeurosis of external oblique and superficial inguinal ring Medial crus of external oblique • Indirect inguinal hernia • • • • • In infants Passage through inguinal canal Loops of fat or valve protruding through weakened abdominal wall Usually most of processus vaginalis obliterated If the stalk remains -> peritoneal sac protrudes Direct inguinal hernia • • • • • Acquired Directly through abdominal wall Weakening of the anterior abdominal wall Usually, does not enter scrotum Forces trough the posterior wall of the inguinal canal • Inguinal ligament and lacunar ligament