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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 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.

Why is it called flexor pollicis longus?

Since it lies in the forearm but inserts in the hand, flexor pollicis longus is also classified as an extrinsic muscle of the hand….Flexor pollicis longus muscle.

Origin Anterior surface of radius and interosseous membrane
Action Metacarpophalangeal and interphalangeal joint 1; Thumb flexion

What is extensor pollicis longus?

Extensor pollicis longus (EPL) is a long muscle located at the deep layer with extensor pollicis brevis, abductor pollicis longus, extensor indicis, and supinator muscle in the posterior compartment of the forearm.

Is the flexor digitorum muscle?

The flexor digitorum profundus is a muscle in the forearm of humans that flexes the fingers (also known as digits). It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm….

Flexor digitorum profundus muscle
FMA 38478
Anatomical terms of muscle

How does flexor pollicis longus work?

To strengthen and hone the function of flexor pollicis longus, sit in a comfortable chair with your hand and palm facing you. Place a band around your thumb, and then move your thumb towards your little finger. Then touch your thumb to each of your fingers in turn while focusing on the flexion of your thumb.

What zone is flexor pollicis longus?

Zone II
Zone II Flexor Pollicis Longus Repair: Thumb Flexion and Complications.

Is abductor pollicis longus and extensor or flexor?

The Abductor pollicis longus (APL) is one of a deep extensor of the forearm and is responsible for facilitating movement and stabilization of the thumb. Its tendon is present in the first extensor compartment of the wrist. It lies immediately below the supinator and sometimes unites with it.

Which tendons flex the fingers?

Flexor digitorum profundus (FDP) tendons FDP tendons help bend the index, middle, ring, and small fingers at the fingertip joint. The muscle that moves these tendons is a common muscle belly shared by all the fingers.

What is the flexor pollicis longus classified as?

Flexor pollicis longus, as its name suggests, is a long muscle of the forearm. It belongs to the deep flexors of the forearm, along with flexor digitorum profundus and pronator quadratus. Since it lies in the forearm but inserts in the hand, flexor pollicis longus is also classified as an extrinsic muscle of the hand.

What are the symptoms of flexor pollicis longus injury?

Marked weakness in the thumb, localized pain, or a decrease in the thumb’s range of motion might indicate an injury to flexor pollicis longus. When the tendon of flexor pollicis longus becomes inflamed it can cause a painful condition known as trigger thumb. Trigger thumb causes the thumb to lock or catch when in the flexed (bent) position.

How do you test the flexor pollicis longus?

The flexor pollicis longus is tested holding stationary the proximal phalanx of the thumb is held while flexing the distal phalanx against resistance. If playback doesn’t begin shortly, try restarting your device.

Is it safe to use electronic muscle stimulators following flexor pollicis longus repair?

This case study demonstrates that use of electronic muscle stimulators following flexor pollicis longus repair may lead to rupture. Therefore, use of these devices should be avoided until healing is complete and patients (particularly bodybuilders) should be made aware of the risks.