Lumbar Vertebrae, Quadratus Lumborum and Transverse Abdominis muscles. The superior portion of the iliac bone. The anterior most feature on the iliac crest. Usually between L3 and L4 in physically fit persons. Superficial Inguinal Ring is made up of two components, lateral crus and medial crus.
Intercrural fibers separate the two.
The iliohypogastric nerve is about 1 cm. Superficial external pudendal art. Superficial circumflex iliac art. Below arcuate line 1. The University of Michigan.