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Gray430 anterior lower limb muscles.jpg
Anterior hip and thigh muscles.
Muscle Type
Feature Fusion of psoas major and iliacus muscles
Origin Iliac fossa and lumbar spine
Insertion Lesser trochanter of femur
Action Flexor of the hip and trunk; lateral flexor of the trunk
Antagonists Gluteus Maximus, Posterior Compartment of Thigh
Spinal innervation L1, L2, L3
Peripheral Innervation Femoral Nerve
Vasculature Medial femoral circumflex artery and iliolumbar artery

The iliopsoas muscle refers to the joined psoas and the iliacus muscles.