Inguinal hernia classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

There are two types of inguinal hernia, direct and indirect.

Direct inguinal hernias occur when abdominal contents herniate through a weak point in the fascia of the abdominal wall and into the inguinal canal.
Indirect inguinal hernias occur when abdominal contents protrude through the deep inguinal ring; this is ultimately caused by failure of embryonic closure of the internal inguinal ring.