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dorsal interossei (interosseous muscles) of foot


Definition: four intrinsic muscles of the fourth layer of plantar muscles; origin, from sides of adjacent metatarsal bones; insertion, first into medial, second into lateral side of proximal phalanx of second toe, third and fourth into lateral side of proximal phalanx of third and fourth toes; action, abduct toes 2–4 from an axis through the second toe; nerve supply, lateral plantar.

Synonym(s): musculi interossei dorsalis pedisTA

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.