Step 3 - Dissection of the Posterior Abdominal Wall
Lift the kidneys and adrenal glands out of the way to expose the muscles of the
posterior abdominal wall. Clean the diaphragm,
psoas major m. and quadratus lumborum m.. Find the median arcuate ligament over the aorta,
the medial arcuate ligament over the psoas major and the lateral arcuate
ligament over the quadratus lumborum.
Dissect the branches of the lumbar plexus along with
the subcostal nerve. Named branches of the lumbar plexus include:
