Segmental nerve damage during a McBurney's incision: a cadaveric study.

Injury to the ilioinguinal and iliohypogastric nerves after a McBurney's incision have been reported to cause paralysis of the conjoint tendon that may lead to the development of an indirect inguinal hernia. This study reports on the incidence of ilioinguinal and iliohypogastric nerve sectioning after the performance of a classic McBurney's incision as well as the distance and relationship of the ilioinguinal and iliohypogastric nerves to the anterior superior iliac spine and a classic McBurney's incision. The right iliac fossa and lumbar region of 33 cadavers were dissected for the uncovering of the ilioinguinal and iliohypogastric nerves after a correct McBurney's incision was made. Injury to the ilioinguinal and iliohypogastric nerves was recorded. The mean distance between the ilioinguinal nerve and the incision line was 41.89 mm and 34.63 mm between the iliohypogastric nerve and the incision line. The ilioinguinal and iliohypogastric nerves were found to be 6.69 mm and 12.08 mm from the anterior superior iliac spine, respectively. No ilioinguinal or iliohypogastric nerve was injured during all 33 McBurney's incisions.