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General Surgery · Hernia: triangles of the groin
Sample itemDuring laparoscopic inguinal hernia repair, mesh fixation with tacks should be avoided in the triangle of pain. Which nerve is at risk there?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Lateral femoral cutaneous nerve
The triangle of pain lies lateral to the gonadal vessels and below the iliopubic tract and contains the lateral femoral cutaneous nerve and femoral branch of the genitofemoral nerve. The triangle of doom, medial to the vessels, contains the external iliac vessels. Tacking in these areas causes neuralgia or haemorrhage.
Option by option
A. Lateral femoral cutaneous nerve (correct)
Correct. The lateral femoral cutaneous nerve runs in the triangle of pain.
B. Sciatic nerve
The sciatic nerve is not in the groin.
C. Ilioinguinal nerve only
The ilioinguinal nerve is encountered in open repairs.
D. Obturator nerve
The obturator nerve lies deeper in the pelvis.
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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