Psoas and Iliacus Muscles Anatomy
Subcostal nerve, Transversus abdominis muscle (cut), Iliohypogastric
nerve, Ilioinguinal nerve, Psoas minor muscle, Psoas major muscle, Genitofemoral
nerve, Lateral femoral cutaneous nerve, Iliacus muscle, Femoral nerve, Obturator
nerve, Superior and inferior pubic rami, Greater trochanter of femur, Iliacus
and psoas major muscles pass backward to insert on lesser trochanter (iliopsoas
muscle), Abductors (gluteus medius and minimus muscles)
Note: Arrows indicate direction of action of muscles (iliacus/psoas
major superiorly, iliopsoas inferiorly).
Adductors, Lumbar plexus (L1–4), Lumbosacral trunk (L4, 5), Iliac crest, Anterior
superior iliac spine, Iliofemoral ligament of hip joint (Y ligament of Bigelow)
Iliopectineal bursa 12th rib, T12, L1, L2, L3, L4, L5, Origin of psoas major muscle
from vertebral bodies, transverse processes, and intervertebral discs (T12–L4)
and origin of psoas minor muscle from vertebral bodies (T12, L1).
