Plantar interossei
Feet
- Origin
- Inner sides of metatarsals 3 to 5
- Insertion
- Inner sides of the bases of the proximal phalanges of toes 3 to 5
- Action
- Adduct toes 3 to 5 toward the second toe; flex them at their base joints
- Nerve supply
- Lateral plantar nerve (S2–S3)
Three small muscles between the metatarsal bones on the sole side. They draw the outer three toes toward the second toe, the line the foot uses as its midline.
Plantar interossei anatomy page →