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The Inguinal Hernia

July 17, 2012  by: lightening  Points: 12   Category: Health  Earning $0.10   Views: 330

This article explains the basic pathology in complete inguinal hernia.

         

The inguinal canal is an important structure present in the lower abdomen. The role of inguinal canal in descend of the intestine is highly important as it determines prognosis in a patient with inguinal hernia.

Under normal conditions, the inguinal canal plays a defense role. Since the canal is oblique in direction, when the intra-abdominal pressure is increased the posterior wall of the canal is pushed forwards and it comes in contact with the anterior wall. Thus the canal is obliterated like a flap-valve.

Opposite the deep ring, the anterior wall of the canal is strengthened by the fleshy fibres of the internal oblique muscle and on the other hand, the side just converse of superficial ring, there is the posterior wall, which is reinforced by the conjoint tendon and reflected part of the inguinal ligament.

The fibres of the internal oblique and the transverse oblique also known as arched fibres operate as demi-sphincters in augmented intra abdominal pressure and obliterate the canal.
Especially in males, the cremaster muscle contracts during increased intra-abdominal pressure and pulls the testes towards the superficial ring, so the outlet of the canal is closed like a cork.

But certain conditions which cause raised intra-abdominal pressure this important shutter mechanism is failed and it paves way for a weak abnormal opening. So the already descended intestines pass through this abnormal opening which may happen to be near the scrotum, so that the intestines descend into the scrotum.

The scrotum is highly vulnerable, because anatomically, the scrotum is considered to be the downward prolongation of the anterior abdominal wall. And also the skin of the scrotum is thin and transparent and elastic. So it easily allows distensions. For this reason the intestines distended in to the scrotum and lodges in it. This descend of the hernial sac completely into the scrotum indicates the features of Complete Inguinal Hernia.




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