Flexor Digitorum Profundus - Muscle Physiology & Functional Anatomy


Flexor Digitorum Profundus Muscle




  • Medial olecranon, upper 3/4 of the anterior & medial surface of ulna as far round as subcutaneous border & narrow strip of interosseous membrane


  • Base of the distal phalanges of medial four fingers (tendon to index finger separates early)

Major Arteries:

  • Anterior interosseous artery


Neural Innervation:

  • Median nerve (anterior interosseous) & ulnar nerve (muscular branches)


Trigger Points: 

Trigger Points for the Flexor Digitorum Profundus and Superficialis




Concentric Functions:

  • Flexes distal interphalangeal joints

  • Secondarily flexes proximal interphalangeal & metacarpophalangeal joints & wrist

Eccentric Functions:

Isometric Function:

Related Muscles





More Images of the Flexor Digitorum Profundus Muscle

how to Palpate the Flexor Digitorum Profundus

Flexor Digitorum Profundus

More Information about the Flexor Digitorum Profundus Muscle

The meaning for the name of the flexor digitorum profundus muscle in Latin literally translates to 'deep finger bender'.  It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm.


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