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Foot Dorsal Interossei & Palmar Interossei Muscles Anatomy
Last updated on:
October 3, 2024
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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
| Origin | Two heads from the proximal half of the of the sides of adjacent metatarsal bones |
| Insertion | The 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. |
| Innervation | Lateral plantar nerve |
| Action | Abduct MTP joint |
See Also: Foot Anatomy
Foot Plantar Interossei Muscles Anatomy
| Origin | Third to fifth metatarsals |
| Insertion | Proximal phalanges medially |
| Innervation | Lateral plantar nerve |
| Action | Adducts toes at MTP joint |
References & More
- Clinically Oriented Anatomy, 8th Edition.
- 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
