Musculus flexor pollicis brevis

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Musculus flexor pollicis brevis.

Musculus flexor pollicis brevis has two heads: caput superficiale and caput profundum.

The beginning:

  • carpal bones - os capitatum, os trapezoideum and ligg. intercarpalia palmaria (caput profundum)
  • retinaculum musculorum flexorum and tuberculum ossis trapezii (caput superficiale)


  • Lateral base of the proximal phalanx of the thumb;
  • sesamoid bone of the thumb (radial).


  • caput superficiale: nervus medianus;
  • caput profundum: nervus ulnaris.


  • Flexion of the metacarpophalangeal joint of the thumb;
  • partial abduction of the thumb;
  • partial opposition of the thumb.

References[edit | edit source]

  • ČIHÁK, Radomír. Anatomie 1. 2. vydání. Praha : Grada, 2001. 497 s. ISBN 80-7169-970-5.