Advanced Surgical Anatomy Flashcards

Which nerve is at greatest risk during a right hemicolectomy due to its course along the lateral abdominal wall?

Answer: Iliohypogastric nerve

The iliohypogastric nerve courses along the lateral abdominal wall and can be injured during flank or right-sided abdominal incisions.

The triangle of Calot, critical for safe cholecystectomy, is bounded superiorly by which structure?

Answer: Liver (visceral surface)

The triangle of Calot is bounded superiorly by the visceral surface of the liver, medially by the common hepatic duct, and inferiorly by the cystic duct.

During a posterior approach to the hip, which nerve is most at risk from excessive internal rotation or retraction?

Answer: Sciatic nerve

The sciatic nerve exits the greater sciatic foramen and lies posterior to the hip, making it vulnerable during posterior hip approaches.

The recurrent laryngeal nerve is most vulnerable during which thyroid surgical maneuver?

Answer: Ligation of the inferior thyroid artery near the gland

The RLN crosses near or behind the inferior thyroid artery close to the gland, so ligation near the parenchyma risks nerve injury.

Which anatomical landmark identifies the level of the aortic bifurcation during open abdominal aortic surgery?

Answer: L4 vertebral body

The aorta bifurcates into the common iliac arteries at approximately the level of the L4 vertebral body.

During a Whipple procedure (pancreaticoduodenectomy), which structure must be carefully preserved to maintain venous drainage of the remnant pancreas?

Answer: Superior mesenteric vein

The superior mesenteric vein runs posterior to the neck of the pancreas and must be preserved to allow venous drainage of the pancreatic remnant.

The McBurney's point, used to locate the appendix, lies at what anatomical position?

Answer: Two-thirds the distance from the umbilicus to the ASIS

McBurney's point is located two-thirds of the distance from the umbilicus to the right anterior superior iliac spine (ASIS).