Posterior Abdominal Wall - Part1

(T12-L4)

(L2-L4) (tenderloin)

Iliac crest Ilium Iliolumbar lig. Ala of ilium Iliac fossa

(L2-L4,femoral nerve)

Sacrum

Attachments of Iliacus Superior 2/3 iliac fossa Ala of sacrum Ant. Sacroiliac lig.s

Psoas minor

Lessor trocanter

Iliopsoas Chief flexor of The thigh Iliopsoas test – positive psoas sign

Lesser trocanter

Femur

Thoracolumbar Fascia

P Erector Spinae muscles

M A EO IO TA

Lumbar Vertebra Quadratus Lumborum Superiorly – lateral arcuate lig.

Psoas Crus of Diaphragm

Superiorly – medial arcuate ligament Inferiorly – extends into the thigh Psoas abscess

Median arcuate ligament

Thoracoabdominal Diaphragm - Sternocostal hiatus

Muscular part

Lateral arcuate ligament Medial arcuate ligament Median arcuate ligament

Vertebrocostal triangle L1-L3

L1-L3 Esophageal hiatus Ligament of teitz

T8-T9 Dialates during inspiration

T10

T12

C3-C5 referred pain to shoulder region

X

Abdominal Aorta - paired tributaries

L1

Bifurcates at L4 Iliolumbar

Aortic aneurysm

IVC – no valves - largest vein

Inferior Vena Cava

-short -Within the liver

-long

Bifurcates at L5

Abdominal Lymphatics Visceral nodes – found on organs and mesentery Parietal nodes - associated with the abdominal wall and large arteries Lymph flows from viseral > parietal lymph nodes > cysternae chyle > thoracic duct