Flexor Hallucis Longus Muscle - Definition And Explanations

introduction

Contents

The flexor hallucis longus muscle.

THE Flexor hallucis longus muscle (Musculus flexor hallucis longus) or earlier Flexor hallucis longus muscle (Toes, sometimes called toes, are appendages of the foot.) is a muscle of the posterior department of the leg and the plantar surface of the foot.

Description

High stakes: It inserts on the lower two-thirds of the posterior surface of the fibula and the lower half of the adjacent interosseous membrane.
route: It forms a muscular body oblique downwards and inwards, which is transformed into a tendon (The tendons are cords attached to the parts of the skeleton that provide support to the muscles …), passes through a groove between the two Tubercle of the posterior surface of the talus then in the calcaneal groove before merging (The genus Passer was created by the French zoologist Mathurin Jacques…) to the plantar surface of the foot. It runs over the tendon of the long toe of the flexor digitorum in the direction of the hallux.
completion: It terminates at the base of the plantar surface of the distal phalanx of the hallux.

vascularization

It is vascularized by collateral arteries of the posterior tibial artery and the fibular artery.

innervation

The innervation of the flexor hallucis longus muscle comes from the tibial nerve, branch of division (In neuroanatomy, within the peripheral and central nervous system, a nerve…) (Division is a law of composition that assigns numbers the product of the first of. ..) internal (In France, this name designates a doctor, a pharmacist or a dentist at the…) of the sciatic nerve.

antagonistic muscle

The extensor hallucis longus muscle.

Anatomically, the flexor hallucis longus is the flexor of both hallux joints. it is therefore the flexor of the distal phalanx at the proximal, and the flexor of the proximal at the first metatarsal; but it is also an extensor of the foot (plantar flexor) and participates in adduction and supination of the foot. It is an inverter of the foot.

However, these actions are random, since during walking (walking (the pleonasm walking is also often used) is a…) during the plantigrade and digitigrade phase, the hallux is fixed relative to the ground. The muscle then works concentrically: it resists the pulling force exerted on it by pushing the leg forward onto the ankle. this has several effects due to the minimal energy expenditure (energy in a general sense denotes everything that enables work to be carried out, the production of …):

it cups the foot by drawing up the sustentaculum tali and retracting the head of M1.

it squeezes (A greenhouse is a generally closed structure intended for production…) the clamp (A clamp is a mechanical device or tool whose function is to clamp something…) bimalleolar by it about its introduction to the pull primer. Simultaneously (time is a human-developed concept for sensing the…) the flexion of the ankle as the body advances separates the ankles (the body of the ankle bone is wider in front than “back”). The flexor hallucis longus is therefore one of the most important stability elements of the ankle, since thanks to its action the body of the talus is tightened tightly between the two ankles.