The amount of muscular interposition decreases from proximal to distal with minimal soft tissue coverage present where the external iliac vessels are opposite the anterior-superior quadrant of the acetabulum.
8) Avoidance of the anterior-superior quadrant during insertion of acetabular screw fixation is recommended to avoid injury to the external iliac vessels.
The common femoral artery and vein are the distal extensions of the external iliac vessels after they have passed below the inguinal ligament.
The femoral artery and vein are easily identified distal to the inguinal ligament as continuations of the external iliac vessels (Figure 1).
Identification of the inferior epigastric vein and artery on axial images is easier when the vessels are identified deep to the rectus abdominis above the pelvis and followed caudally to their origin from the external iliac vessels.