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Plantar interossei

Other Terms: Plantar interossei, Musculi interossei plantares, Muscle interosseux plantaires

Muscle parts

None

Latin name

Musculi interossei plantares

Latin muscle parts

None

Group

Foot muscle – plantar group – fourth layer

Etymology

This muscle’s name in English is the muscle between the bones on the sole of the foot. Interossei comes from the Latin terms inter meaning “between” and os meaning “bone.” The word plantaris is from the Latin planta for “the sole of the foot,” which comes from the Greek plata meaning “flat.”

Origin

Plantar surface of the base and medial sides of the shaft of the metatarsal bones 3, 4, and 5.

Insertion

Medial side of the base of the proximal phalanges and extensor expansion of digits 3, 4, and 5.

Action

Adduction of digits 3, 4, and 5; extension of the interphalangeal joints.

Nerve supply

Lateral plantar nerve (S2 and S3)

Blood supply

The muscle is supplied by the lateral plantar artery, plantar arch, second to fourth plantar metacarpal arteries, and dorsal digital arteries.

Latin

Musculi interossei plantares

French

Muscle interosseux plantaires

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