Flexor Pollicis Longus - Muscle Physiology & Functional Anatomy

 

Flexor Pollicis Longus Muscle

Anatomy

 

Origin:

  • Anterior surface of radius below anterior oblique line & adjacent interosseous membrane

Insertion

  • Base of distal phalanx of thumb



Major Arteries:

  • Anterior interosseus artery

 

Neural Innervation:

  • Anterior interosseous nerve (C7-C8)

 

Trigger Points: 

Trigger Points of the flexor pollicis longus

 

Physiology

 

Concentric Functions:

  • Flexes distal phalanx of thumb

  • Assists in wrist flexion (when thumb is fixed)

Eccentric Functions:


Isometric Function:


Related Muscles


Antagonist:


Exercises:

 

 


More Images of the Flexor Pollicis Longus Muscle

How to Palpate the Flexor Pollicis Longus

Flexor Pollicis Longus


More Information about the Flexor Pollicis Longus Muscle

The flexor pollicis longus muscle lies in the same plane as the flexor digitorum profundus and is only found in humans (absent or rudimentary in primates).

 

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