Dorsal interossei (foot)

Last revised by Craig Hacking on 2 Aug 2021

The four dorsal interossei muscles are the most superior muscles in the sole of the foot and abduct the 2nd to 4th toes relative to the long axis through the second toe.


  • origin
  • insertion
    • extensor hoods and bases of proximal phalanges of toes II to IV
  • action
    • abduction of toes II to IV at metatarsophalangeal joints; resist extension of metatarsophalangeal joints and flexion of interphalangeal joints
  • innervation

See also 

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