Origin: there are 3 plantar interossei arising from the base and medial
plantar surface of the 3rd, 4th, and 5th metatarsal bones.
Insertion: medial side of the base of the 1st phalanx of the same toe
and into the tendons of the
Extensor digitorum longus .
Action: Flex the proximal and extend the distal phalanges and adducts
toes toward the axis of 2nd toe.
Nerve Supply: Lateral plantar,
[
S1 ,
S2 .
(See
L28uBARNErVes[
Innerv. Musc. Lower Limb )
Synergist:
Dorsal Interossei.
