Flexor digitorum profundus

Flexor Digitorum Profundus is a muscle in the forearm that flexes the fingers (also known as digits). It is considered an extrinsic hand muscle because it is situated in the forearm but still acts on the hand. The muscle is unique because it controls the movements of the distal interphalangeal joints of the fingers.

Anatomy

The Flexor Digitorum Profundus originates from the upper 3/4 of the anterior and medial surfaces of the ulna, interosseous membrane and deep fascia of the forearm. The muscle's tendons run through the carpal tunnel and attach to the base of the distal phalanx of the fingers.

Function

The primary function of the Flexor Digitorum Profundus is to enable flexion of the fingers. Specifically, it flexes the distal interphalangeal joints. However, it also contributes to flexion of the wrist and the metacarpophalangeal joints.

Clinical Significance

Damage to the Flexor Digitorum Profundus can result in a loss of ability to flex the distal interphalangeal joints. This can significantly impact hand function and dexterity. Conditions such as Dupuytren's contracture and trigger finger can also affect the Flexor Digitorum Profundus.

See Also

• Flexor Digitorum Superficialis
• Hand Muscles
• Forearm Muscles

References

Flexor digitorum profundus Resources
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