Dorsal Interossei (Foot)
Foot
DAB rule applies here too — Dorsal ABduct. They spread your toes apart.
Function
Abduct toes from 2nd digit axis, flex MTP and extend IP joints
Origin
Adjacent sides of metatarsals
Insertion
Bases of proximal phalanges and extensor expansions
Innervation
Lateral plantar nerve (S2-S3)