Digitus medius

Digitus medius

Latin	Digitus tertius manus
Nerve	Digital nerves of median nerve, digital nerves of ulnar nerve
System	Skeletal

The digitus medius, commonly known as the middle finger, is the third digit of the hand, located between the index finger and the ring finger. It is typically the longest finger on the hand and is often used in gestures and for grasping objects.

Structure

The digitus medius consists of three phalanges: the proximal, middle, and distal phalanges. It is connected to the hand by the metacarpal of the middle finger, which is also the longest of the metacarpals. This finger has its own set of muscles and tendons, including the flexor digitorum profundus and flexor digitorum superficialis, which allow for flexing, and the extensor digitorum muscle, which allows for extension.

Function

The primary function of the digitus medius is to aid in the manipulation and gripping of objects. Its length and position allow it to provide substantial force and precision in grip. It plays a crucial role in hand gestures, both in cultural expressions and non-verbal communication.

Cultural aspects

In many cultures, the middle finger is used in an offensive gesture, known as "flipping the bird" or "giving the finger." This gesture is often used to express contempt or anger towards another person.

Clinical significance

Injuries to the middle finger can occur due to its exposed position. Common injuries include fractures, dislocations, and tendon injuries. Treatment depends on the severity of the injury but may include splinting, surgery, and physical therapy.

See also

• Finger
• Hand
• Phalanx bones
• Metacarpal bones