What does the flexor digitorum longus muscle do
Isabella Wilson
Published May 17, 2026
Due to its attachments, flexor digitorum longus performs its action in four different joints; talocrural (ankle joint), talocalcaneal (subtalar joint), metatarsophalangeal and interphalangeal joints. The main function of this muscle is the flexion of the foot and toes.
What action does the flexor digitorum perform?
The primary function of flexor digitorum superficialis is flexion of the middle phalanges of the four fingers (excluding the thumb) at the proximal interphalangeal joints, however under continued action it also flexes the metacarpophalangeal joints and wrist joint.
How do you strengthen the flexor digitorum longus?
- Walking or running barefooted on uneven surfaces, such as sand, pebbles or grass. Do this for 10 – 15 minutes a few days weekly. …
- Standing on an even surface, raise up on your toes and try to maintain this position for approximately three seconds.
What is the function of the flexor digitorum brevis?
Flexor digitorum brevis is in charge of the toe flexion at the metatarsophalangeal joints of the lateral four digits. It also supports the longitudinal arch of foot while propelling the body forward during gait.Where is the flexor digitorum longus muscle?
The flexor digitorum longus (FDL) muscle is located on the tibial side of the leg within the deep posterior compartment of the leg. At its origin it is thin but as it descends, the muscle increases in size.
Where is flexor carpi digitorum?
Flexor carpi ulnaris is a fusiform muscle located in the anterior compartment of the forearm. It belongs to the superficial flexors of the forearm, along with pronator teres, palmaris longus, flexor digitorum superficialis and flexor carpi radialis.
What is the action of extensor digitorum longus?
The primary action of the extensor digitorum longus is to extend the lateral four toes at metatarsophalangeal joint. This means that when acting independently, it is unable to extend the entire length of the toes, extending only at metatarsophalangeal, while at the interphalangeal joints the toes remain flexed.
What is flexor pollicis longus?
The flexor pollicis longus (FPL) is a long muscle located at the deep layer with flexor digitorum profundus and pronator quadratus in the anterior compartment of the forearm. Though it is situated at the forearm, it is classified as part of the extrinsic muscles of the hand as it’s function is seen in thumb movement.What muscle assists the flexor digitorum longus by adding strength to the contraction and straightening out the line of pull to keep the toes straight when they flex?
Quadratus Plantae: The quadratus plantae muscle is located superior to the flexor digitorum longus tendons. Attachments: Originates from the heel and attaches to the tendons of flexor digitorum longus. Actions: Assists flexor digitorum longus in flexing the lateral four toes.
How do you test flexor digitorum longus?To test the flexor digitorum longus muscle, you want to eliminate the effects of other muscles and this is fortunately easy to do as it is the only muscle that plantarflexes the distal phalanges of the toes. Just ask the patient to curl the toes.
Article first time published onWhere is the flexor digitorum brevis?
Flexor Digitorum Brevis is the central muscle of the superficial layer of the plantar foot muscles. It lies in the middle of the sole, immediately superior to the plantar aponeurosis and inferior to the tendon of Flexor Digitorum Longus.
How do you treat flexor digitorum longus?
The standard treatment is surgical decompression, which gives excellent results in the majority of patients. If the patient’s symptoms are the result of pressure on the nerve from the abductor hallucis muscle, release of the muscle at its origin is performed rather than sectioning of the flexor retinaculum.
Can you pull your extensor digitorum longus?
Tear of the extensor digitorum longus and its fascia is a very rare acute ankle injury. Although acute inversion injuries of the ankle generally result in a sprain of the lateral ligaments, most commonly, the anterior talo-fibular ligament, injuries to tendinous structures and eversion muscles may also be associated.
What is the action of the flexor hallucis longus?
Functions. The primary action of the flexor hallucis longus is flexion of all the joints of the great toe (hallux). When the foot is off the ground, this muscle, together with flexor digitorum longus, flexes the toes at the distal phalanges.
How do you release the flexor digitorum longus?
To release the TrP, lie down or sit on the floor and stretch your legs out. Place the ball under the trigger point. Place the other leg over it should you require more pressure. Ideally, you’ll feel sensation radiating to the big toe.
How do you stretch the flexor digitorum?
To give your flexor digitorum superficialis a good stretch, stand an arm’s length from a wall. Place your flattened hand on the wall with your fingers pointing downwards. Gently lean into your palm to feel a stretch. Hold for 15-30 seconds then switch arms.
What movement does the extensor digitorum perform?
Function. The extensor digitorum muscle extends the phalanges, then the wrist, and finally the elbow. It tends to separate the fingers as it extends them. In the fingers, the extensor digitorum acts principally on the proximal phalanges, acting to extend the metacarpophalangeal joint.
What does the name extensor digitorum longus mean?
: a pennate muscle on the lateral part of the front of the leg that extends the four small toes and dorsally flexes and pronates the foot.
What is the action of the extensor hallucis longus muscle?
Like the name suggests, the main function of extensor hallucis longus muscle is the extension of the big toe (hallux). This action happens in both metatarsophalangeal and interphalangeal joints of hallux. This extension is a crucial movement in walking and running.
What does flexor carpi Radialis do?
The main function of FCR is providing flexion of the wrist and assisting in abduction of the hand and wrist. The flexor carpi radialis (FCR) muscle has been suggested to act as a dynamic scaphoid stabilizer.
Where does flexor carpi Radialis insert?
This muscle originates from the medial epicondyle of the humerus as part of the common flexor tendon. It runs just laterally of flexor digitorum superficialis and inserts on the anterior aspect of the base of the second metacarpal, and has small slips to both the third metacarpal and trapezium tuberosity.
Does flexor carpi Radialis flex the elbow?
Function. Extensor carpi radialis longus together with extensor carpi radialis brevis produce wrist extension and abduction (radial deviation). In addition extensor carpi radialis longus may help to flex the elbow joint and is active during fist clenching.
What does the extensor carpi digitorum do?
As its name suggests, the main function of extensor digitorum is the extension of four medial fingers in metacarpophalangeal and proximal and distal interphalangeal joints.
What causes extensor digitorum longus pain?
Most commonly it is the extensor tendon to the big toe (EHL) that is affected. In other instances the extensor tendons to the lesser toes (EDL) is affected. The most common factors that cause extensor tendonitis are excessive tightness of the calf muscles, over exertion during exercise and falling of the foot arch.
Why is it called flexor digitorum brevis?
Flexor digitorum brevis muscleOriginCalcaneusInsertionMiddle phalanges of toe 2-5
What does quadratus plantae muscle do?
Function. The muscles of the foot are arranged in compartments and layers, but function together to support the foot during stance phase and maintaining the arch of the foot. Quadratus plantae mainly functions by assisting flexor digitorum longus with flexion of the lateral 4 digits of the foot.
What is flexor pollicis brevis?
Flexor pollicis brevis is a short, broad intrinsic muscle of the hand. Together with opponens pollicis, adductor pollicis and abductor pollicis brevis, it comprises the group of thenar muscles. … Like the other thenar muscles, flexor pollicis brevis acts on the thumb and flexes it at the metacarpophalangeal joint.
How long does FHL tendonitis last?
In most cases, normal activity can resume within a few weeks with rest and conservative treatment of FHL tendonitis. When surgery is involved, recovery time will take up to three months before you can return to play.
Is extensor tendonitis serious?
Without treatment, the tendon can become permanently damaged, causing the tip of the finger to fail to straighten completely.
Does extensor tendonitis hurt all the time?
The discomfort is usually felt around the midpoint of the dorsal (top) of the foot. You may experience extensor tendonitis in both feet, but often only one foot is affected. The pain usually builds gradually as use of the injured tendon continues.
How do you get mallet finger?
In a mallet injury, when an object hits the tip of the finger or thumb, the force of the blow tears the extensor tendon. Occasionally, a minor force such as tucking in a bed sheet will cause a mallet finger.