Flexor pollicis brevis muscle

The flexor pollicis brevis muscle is a muscle of the thenar eminence and is distal to the abductor pollicis brevis, and is one of the intrinsic muscles of the hand.


  • origin: tubercle of the trapezium and flexor retinaculum
  • insertion: proximal phalanx of the thumb
  • action: flexes thumb at metacarpophalangeal joint
  • arterial supply: superficial palmar arch
  • innervation: recurrent branch of median nerve

Anatomy: Upper limb

Anatomy: Upper limb

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Article information

rID: 45025
Section: Anatomy
Synonyms or Alternate Spellings:
  • Flexor pollicis brevis muscles

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