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Dorsal Interossei Muscles of Foot (Left)
Muscular System

Dorsal Interossei Muscles of Foot (Left)

Musculi interossei dorsales pedis

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The dorsal interossei muscles are one of the two subgroups of the fourth layer of muscles of the plantar part of the foot, the other being the plantar interossei. Overall, these muscles mainly act to:

- abduct the second to fourth toes at their metatarsophalangeal joints;

- simultaneously flex the metatarsophalangeal joints and extend the interphalangeal joints of the second to fourth toes.

There are four dorsal interossei muscles in the foot and, from medial to lateral, they are numbered one to four.

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Foot Muscle

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The extrinsic foot muscles are those whose muscle bellies reside proximal to the foot, but tendons directly insert into the bones and ligaments.

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