Plantar Interossei:Origin, Insertion, Action & Nerve Supply
Plantar interossei muscles are three muscles located between the metatarsal bones in the foot.The three plantar interossei muscles adduct the third, fourth and little toes toward the long axis through the second toe.
Origin: Plantar interossei muscles originate from the medial side of metatarsals three to five.
Insertion: It inserts into the medial sides of the phalanges of digits three to five.
Function: Adduct digits three to five and flexes the metatarsophalangeal joints.
Nerve Supply: lateral plantar nerve from tibial nerve.