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General Surgery · Hernia and abdominal wall: corona mortis
Sample itemDuring dissection of Cooper's ligament in a laparoscopic hernia repair, brisk bleeding arises from a vessel crossing the superior pubic ramus that connects the external iliac or inferior epigastric system with the obturator system. What is this vessel called?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Corona mortis
The corona mortis is an anastomosis between the obturator and the inferior epigastric or external iliac vessels running over the superior pubic ramus. It is present in a large proportion of people and can bleed profusely if torn, so it must be sought before placing staples or dissecting at Cooper's ligament.
Option by option
A. Corona mortis (correct)
Correct. The corona mortis links the obturator and inferior epigastric or external iliac vessels over the pubic ramus.
B. Iliolumbar artery
The iliolumbar artery supplies the iliacus and psoas region and is not at the pubic ramus.
C. Deep circumflex iliac artery
The deep circumflex iliac artery runs along the iliac crest, lateral to the area of Cooper's ligament.
D. Accessory pudendal artery
An accessory pudendal artery arises from the internal iliac system and passes toward the perineum, not across the pubic ramus.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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