Most common type of hernia is which of the following?

• A. Indirect inguinal
• B. Direct inguinal
• C. Femoral
• D. Umbilical

Answer: (A)

Indirect inguinal hernia is the most common type. It happens when the processus vaginalis fails to obliterate, leaving a persistent channel that allows abdominal contents to protrude through the deep inguinal ring and travel through the inguinal canal, often reaching the scrotum. Because it passes lateral to the inferior epigastric vessels, this pathway is the typical and most frequent route for herniation, making it the most common overall.

Direct inguinal hernias arise from weakness of the posterior wall within Hesselbach's triangle, medial to the inferior epigastric vessels, and are more related to aging; they occur less often than indirect. Femoral hernias pass below the inguinal ligament through the femoral canal and are relatively rare, especially in men. Umbilical hernias involve a defect at the umbilicus from incomplete closure of the umbilical ring and are more common in infants, with adults far less commonly affected compared with inguinal hernias.