Flexor digitorum muscle

Flexor Digitorum Muscle

Flexor digitorum muscle (Image from Gray's Anatomy)

The Flexor Digitorum Muscle is a group of muscles in the forearm that act to flex the fingers (also known as digits). The muscle group is divided into two parts: the Flexor Digitorum Superficialis and the Flexor Digitorum Profundus.

Anatomy

The Flexor Digitorum Superficialis originates from the medial epicondyle of the humerus, the radius, and the ulna. It inserts into the middle phalanges of the four fingers. The Flexor Digitorum Profundus originates from the ulna and interosseous membrane. It inserts into the distal phalanges of the fingers.

Flexor digitorum profundus and superficialis (Image from Gray's Anatomy)

Function

The primary function of the Flexor Digitorum muscles is to enable flexion of the fingers and wrist. The Superficialis muscle flexes the proximal interphalangeal joints, while the Profundus muscle flexes the distal interphalangeal joints. Both muscles also assist in flexing the wrist.

Clinical Significance

Injuries or conditions affecting the Flexor Digitorum muscles can lead to a range of symptoms, including pain, weakness, and limited mobility in the fingers and wrist. Conditions such as Dupuytren's contracture and trigger finger are associated with these muscles.

See Also

• Hand anatomy
• Muscles of the upper limb
• Flexor muscles