Espiral Atlas
MuscleLower limb

Psoas major

musculus psoas major

With the iliacus, it flexes the thigh at the hip and stabilizes the joint. On both sides, it initiates flexion of the trunk and reduces the lumbar lordosis. It is also a postural muscle, active in standing.

Lower limb – 3D human anatomy atlas

In the full entry

The full entry, with every field, sources, quiz and clinical correlations, is in the atlas.

  • Origin
  • Insertion
  • Innervation
  • Blood supply

Related clinical cases

  • Psoas abscess

Other structures in this region

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