The rectus hernia triangle, also known as Hesselbach’s triangle, has the inferior abdominal wall artery on the lateral side, the lateral edge of the rectus abdominis muscle on the medial side, and the inguinal ligament on the bottom side. The abdominal wall here lacks complete abdominal muscle coverage and the transverse abdominal fascia is weaker than the surrounding parts, making it prone to herniation. Direct inguinal hernia protrudes from posterior to anterior here, hence the name direct hernia triangle. The triangle is separated from the deep inguinal ring by the inferior abdominal wall artery and the intercondylar ligament, and the inferior abdominal wall artery can be used as one of the signs to distinguish a straight hernia from a hiatal hernia during surgery. The inferior abdominal wall artery can be used as a marker to distinguish between a straight inguinal hernia and a hiatal hernia during surgery. A straight inguinal hernia occurs mostly in the elderly and does not usually enter the scrotum.