Psoas Major

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Anterior Hip Muscles.png
Psoas Major
Muscle Type
Origin Transverse processes of L1-5, bodies of T12-L5 and intervertebral discs below bodies of T12-L5
Insertion Middle surface of lesser trochanter of femur
Action Stabiliser and flexor of the hip, lateral flexion of the trunk.
Synergists
Antagonists Gluteus Maximus
Spinal innervation
Peripheral Innervation
Vasculature lumbar arteries, iliolumbar artery, deep circumflex iliac artery, external iliac artery, femoral artery