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Foot Dorsal Interossei & Palmar Interossei Muscles Anatomy

Foot Dorsal interossei Muscles is a group of four muscles that lies in the space between the metatarsal bones of the foot, they act to abduct the toes. While plantar interossei muscles is a group of three muscles that act to abduct the toes. They both work at the MTP joint to abduct or adduct the toes.

Foot Dorsal Interossei Muscles Anatomy

OriginTwo heads from the proximal half of the of the sides of adjacent metatarsal bones
InsertionThe two heads of each muscle form a central tendon that insert on the bases of the second, third, and fourth proximal phalanges and into the aponeurosis of the tendons of EDL.
The first is inserted into the medial side of the second toe;
the other three are inserted into the lateral sides of the 2nd, 3rd, and 4th toes.
InnervationLateral plantar nerve
ActionAbduct MTP joint
See Also: Foot Anatomy
Foot Dorsal Interossei muscles

Foot Plantar Interossei Muscles Anatomy

OriginThird to fifth metatarsals
InsertionProximal phalanges medially
InnervationLateral plantar nerve
ActionAdducts toes at MTP joint
Foot Plantar Interossei muscles

References & More

  1. Clinically Oriented Anatomy, 8th Edition.
  2. Kalin PJ, Hirsch BE. The origins and function of the interosseous muscles of the foot. J Anat. 1987 Jun;152:83-91. PMID: 3654378; PMCID: PMC1261748. Pubmed
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