plantar interosseous muscle

plan·tar in·ter·os·se·ous mus·cle

(plan'tahr in-tĕr-os'ē-ŭs mŭs'ĕl)
Three intrinsic muscles of foot; origin, the medial side of the third, fourth, and fifth metatarsal bones; insertion, corresponding side of proximal phalanx of the same toes; action, adducts three lateral toes; nerve supply, lateral plantar.
Synonym(s): musculus interosseus plantaris [TA] .