Name: leg muscle groups for foot motion
Uploaded: 2024-03-28T14:28:28.000Z
Duration: 1 min 28 s
Channel: JoVE

K12 Standards

Florida Department of Education

High School

Life Science

SC.912.L.14

SC.912.L.14.20

muscles-of-the-leg-that-move-the-foot-and-toes

Muscles of the Leg that Move the Foot and Toes

Les muscles de la partie inférieure de la jambe qui déplacent le pied et les orteils peuvent être divisés en compartiments antérieur, latéral et postérieur.
Le compartiment antérieur comprend le tibial antérieur, l’extenseur de l’hallucis longus, l’extenseur des doigts longs et le muscle fibulaire tertius.
Ces muscles dorsifléchissent le pied. Le tibial antérieur s’inverse, tandis que le tertius fibulaire l’inverse. De plus, l’extenseur de l’hallucis long et l’extenseur des doigts longs prolongent respectivement le gros orteil et les autres orteils.
Le compartiment latéral abrite le fibularis longus et le fibularis brevis qui fléchissent et inversent le pied.
Les muscles du compartiment postérieur sont divisés en couches superficielles et profondes.
La couche superficielle postérieure comprend le gastrocnémien et le soléaire, permettant la flexion plantaire. Le gastrocnémien fléchit également la patte. Le plantaire, un petit muscle qui peut être présent par paires, fléchit le pied.
Les muscles de la couche profonde postérieure fléchissent le pied, à l’exception du poplité qui fait pivoter médialement le tibia.
De plus, le fléchisseur de l’hallucis long et le fléchisseur des doigts longus fléchissent le gros orteil et les autres orteils, respectivement. Le tibial postérieur supine le pied.

muscles de la jambe qui font bouger le pied et les orteils

La jambe humaine comprend un système complexe de muscles qui facilitent le mouvement des pieds et des orteils. Au sein de ce système, les muscles sont classés en compartiments antérieur, latéral et postérieur, chacun avec un ensemble unique de muscles remplissant des fonctions spécifiques.

Compartiment antérieur

La loge antérieure comprend les muscles qui contribuent à la dorsiflexion du pied. Ce compartiment abrite les muscles tibial antérieur, extenseur de l’hallux long et extenseur des orteils longs. Le muscle tibial antérieur, situé le long de la surface latérale du tibia, est facilement palpable et est le plus épais. Le tibial antérieur provoque également une inversion du pied. De plus, l'extenseur long de l’hallux et l'extenseur long des orteils étendent respectivement le gros orteil et les autres orteils. Le muscle fibulaire tiers, provenant de la même source que le long extenseur des orteils, est également présent ici. Cela retourne le pied.

Les périostites tibiales, appelées médicalement syndrome de stress tibial médial, sont une affection courante chez les athlètes, en particulier les coureurs et les danseurs. Elle résulte d’une sollicitation excessive et d’un stress répétitif des muscles de la loge antérieure. Les mesures préventives comprennent des étirements réguliers, un entraînement en force et le choix de chaussures appropriées.

Compartiment latéral

Le compartiment latéral contient les muscles long fibulaire et court fibulaire. Le long fibulaire est le plus long et le plus superficiel des deux muscles. Il provient de la tête et de la partie supérieure du péroné, de l'os externe et le plus mince du bas de la jambe, ainsi que des septa intermusculaires adjacents. Le court fibulaire, situé juste sous le long fibulaire, est plus court et provient des deux tiers inférieurs du péroné. Ces deux muscles contribuent à la flexion et à l’éversion plantaire du pied.

Compartiment postérieur

Le compartiment postérieur est divisé en groupes musculaires superficiels et profonds. Le groupe superficiel comprend les muscles gastrocnémien, soléaire et plantaire, communément appelés muscles du mollet. Ces muscles partagent le tendon d'Achille, le tendon le plus robuste du corps, qui s'attache à l'os calcanéen de la cheville. La position verticale humaine est attribuée à la taille de ces muscles. Le gastrocnémien constitue la partie proéminente du mollet, tandis que le soléaire, situé sous le gastrocnémien, a une apparence plate et large. Le plantaire, petit muscle, est niché entre ces deux muscles et est absent chez certains individus.

Le compartiment postérieur profond abrite les muscles poplité, tibial postérieur, long fléchisseur des orteils et long fléchisseur de l'hallux. Le poplité forme le plancher de la fosse poplitée. Le tibial postérieur est le muscle le plus profond de la loge postérieure, positionné entre les muscles longs fléchisseurs des orteils et longs fléchisseurs de l'hallux. Malgré la flexion du gros orteil au niveau de l'articulation interphalangienne, le long fléchisseur de l'hallux est plus grand que le long fléchisseur des orteils, qui fléchit les quatre autres orteils.

Muscles de la jambe qui font bouger le pied et les orteils

La jambe humaine comprend un système complexe de muscles qui facilitent le mouvement des pieds et des orteils. Au sein de ce système, les muscles sont classés en ...

Education

Enseignement

JoVE Core

Anatomy and Physiology

Anatomie et physiologie

Unit 1

Unité 1

The Muscular System

Le système musculaire

KEY TERMS AND CONCEPTS

TERMES ET CONCEPTS CLÉS

leg muscle groups for foot motion

The leg muscles that move the foot and toes are organized into the anterior, lateral, and posterior compartments. Each compartment has a distinct set of muscles with its own actions. Together, they control dorsiflexion, plantar flexion, inversion, eversion, and toe movement.

The anterior compartment includes the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and fibularis tertius. The tibialis anterior runs along the lateral surface of the tibia, is easy to feel, and is the thickest muscle in this group. It dorsiflexes the foot and also helps invert it. The extensor hallucis longus extends the great toe, while the extensor digitorum longus extends the other toes. The fibularis tertius comes from the same source as the extensor digitorum longus and helps evert the foot.

This compartment is also linked to shin splints, which are called medial tibial stress syndrome. It is a common problem in athletes, especially runners and dancers. It is caused by overuse and repeated stress on the anterior compartment muscles. Regular stretching, strength training, and proper footwear can help prevent it.

The lateral compartment contains the fibularis longus and fibularis brevis. The fibularis longus is the longer and more superficial muscle. It starts at the head and upper part of the fibula, which is the outer and thinner lower-leg bone, along with nearby intermuscular septa. The fibularis brevis lies beneath it and begins on the lower two-thirds of the fibula. These muscles help plantar flex and evert the foot.

The posterior compartment is divided into superficial and deep muscle groups. The superficial group includes the gastrocnemius, soleus, and plantaris, which are often called the calf muscles. These muscles share the Achilles tendon, the strongest tendon in the body, and it attaches to the calcaneal bone at the ankle. Their size helps support the upright human stance. The gastrocnemius makes up the main bulge of the calf, the soleus lies beneath it and has a flat, broad shape, and the plantaris is a small muscle between them that is absent in some people.

The deep posterior compartment includes the popliteus, tibialis posterior, flexor digitorum longus, and flexor hallucis longus. The popliteus forms the floor of the popliteal fossa. The tibialis posterior is the deepest muscle in this compartment and lies between the flexor digitorum longus and flexor hallucis longus. The flexor hallucis longus flexes the big toe at the interphalangeal joint, and it is larger than the flexor digitorum longus, which flexes the other four toes.

Leg Muscle Groups for Foot Motion

the muscular system

Muscles, Bones, and Body Movement

The muscular system helps the body move, stay stable, and carry out internal work. It includes three kinds of muscle tissue: skeletal, smooth, and cardiac muscle. Each type has a different role in the body. Skeletal muscles are under conscious control, so people can move them on purpose. They attach to bones by tendons, and their contraction and relaxation make actions like walking and lifting possible. These muscles also produce heat during physical activity, which helps maintain body...

fascicle arrangement in skeletal muscles

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muscle coordination and action

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Muscles work together to create smooth, purposeful movement. Actions such as flexion, extension, adduction, abduction, and rotation depend on this coordination. The body uses several muscles in a controlled way so joints and bones move as needed. Four functional roles help describe how muscles act during movement: agonist, antagonist, synergist, and fixator. An agonist, also called the prime mover, is the main muscle that produces a specific motion. During a bicep curl, the biceps brachii is...

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axial and appendicular muscles

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muscles of the anterior neck

Anterior Neck Muscles by Region

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muscles that move the head

How Neck Muscles Guide Head Motion

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muscles of the abdomen

Abdominal Wall Muscles and Support

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muscles of the shoulder

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muscles that move the arm

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muscles that move the forearm

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muscles of the forearm that move the hand and fingers

muscles-of-the-forearm-that-move-the-hand-and-fingers

Forearm Flexors, Extensors, and Wrist Support

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muscles that move the thigh

Hip Muscles That Move the Thigh

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muscles that move the leg

Thigh Muscles Behind Leg Motion

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muscles of the leg that move the foot and toes

The leg muscles that move the foot and toes are organized into the anterior, lateral, and posterior compartments. Each compartment has a distinct set of muscles with its own actions. Together, they control dorsiflexion, plantar flexion, inversion, eversion, and toe movement. The anterior compartment includes the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and fibularis tertius. The tibialis anterior runs along the lateral surface of the tibia, is easy to feel, and...

key terms and concepts

Learn how anterior, lateral, and posterior leg muscles move the foot and toes, including dorsiflexion, plantar flexion, inversion, eversion, and toe flexion.

Leg Muscle Groups for Foot Motion | JoVE K12

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Leg Muscle Groups for Foot Motion

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