Flexor pollicis brevis

Dr Craig Hacking and Dr Geon Oh et al.

The flexor pollicis brevis muscle is a muscle of the thenar eminence and is distal to the abductor pollicis brevis.


  • 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
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Article information

rID: 45025
Section: Anatomy
Synonyms or Alternate Spellings:

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