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Plantaris

Other Terms: Musculus plantaris, Muscle plantaire

Muscle parts

None

Latin name

Musculus plantaris

Latin muscle parts

None

Group

Crural muscle – posterior compartment – superficial group

Etymology

This muscle’s name in English is the sole of the foot muscle. The word plantaris is from the Latin planta for “the sole of the foot,” which comes from the Greek plata meaning “flat.”

Origin

Distal aspect of the lateral supracondylar line and the oblique popliteal ligament.

Insertion

Posterior surface of the calcaneus

Action

Assists with plantar flexion of the ankle joint and flexion of the knee.

Nerve supply

Tibial nerve (S1 and S2)

Blood supply

From proximal to distal, the belly of the muscle is supplied by the sural branches of the popliteal artery, the posterior tibial artery, and the peroneal artery. The tendon receives a blood supply from the anterior and posterior, medial and lateral malleolar arteries, the calcanean branches of the posterior tibial artery, peroneal artery, and the lateral plantar artery.

Latin

Musculus plantaris

French

Muscle plantaire

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