Psoas minor muscle

Dr Henry Knipe et al.

Psoas minor muscle is a thin muscle with a long tendon and is functionally insignificant compared to psoas major. It is present in ~60% (range 50-67%) of the population 1-2.


  • origin: T12 and L1 transverse processes
  • insertion: passes behind the inguinal ligament to insert into the iliopubic eminence
  • nerve supply: L1 nerve root
  • action: lumbar spine flexion
Anatomy: Abdominopelvic
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Article information

rID: 24534
Section: Anatomy
Tag: stub, refs, cases
Synonyms or Alternate Spellings:
  • Psoas minor

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