Iliopsoas Flashcards by Stuart Helster | Brainscape

Q

Insertion of psoas major/iliacus?

A

Lesser trochanter

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Q

Innervation of psoas major?

A

Direct branches from lumbar plexus (psoas)

L2-L4

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Q

Action of ilipsoas? (psoas major/iliacus)

A

Hip joint: flexion and external rotation
Lumbar spine: unilateral contraction (fixed femur): ipsilateral lateral flexion
bilateral contraction: raises trunk from supine position

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Q

Origin of iliacus?

A

Iliac fossa

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Q

Innervation of iliacus?

A

Femoral n.

L2-L4

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Q

Origin of psoas major?

A

Superficial: T12-L4 and associated intervertebral discs (lateral surfaces)
Deep: L1-L5 vertebrae (transverse processes)

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