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Iliopsoas (Group)
Region: Hip & Thigh Muscles · All hip & thigh muscles
Iliopsoas (Group) at a glance
| Origin | Lumbar vertebrae (psoas major) and iliac fossa (iliacus) |
|---|---|
| Insertion | Lesser trochanter of the femur |
| Actions | Flex the thigh at the hip — the strongest hip flexor; Flexes the trunk when rising from lying |
| Nerve supply | Ventral rami L1–L3 (psoas) and femoral nerve (iliacus) |
◆ Good to know
The two muscles merge into one tendon; a 'hip flexor strain' and psoas irritation from prolonged sitting both involve this group.
More Hip & Thigh Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.