Digitus quintus

Digitus Quintus

Latin	Digitus minimus manus, digitus V manus
Nerve	Ulnar nerve
System	Skeletal and muscular system

Digitus quintus, commonly known as the little finger or pinky, is the smallest and most ulnar of the fingers on the human hand. It is opposite the thumb and next to the ring finger. The digitus quintus plays a crucial role in hand function, providing grip strength and dexterity.

Structure

The digitus quintus consists of three phalanges: the proximal, middle, and distal. These bones are smaller and more delicate than those in the other fingers. The finger is supported by several muscles, including the flexor digiti minimi brevis, which flexes the finger, and the abductor digiti minimi, which aids in the abduction of the finger away from the hand.

Function

The primary function of the digitus quintus is to assist in grasping and handling objects. Despite its small size, the pinky contributes significantly to the overall strength of the hand. It is particularly important in tasks that require a tight grip or fine motor skills, such as writing or playing certain musical instruments.

Clinical significance

The digitus quintus can be affected by various medical conditions. One common issue is fracture, which can occur due to direct trauma or accidental injury. Other conditions include Dupuytren's contracture, which can cause the finger to bend towards the palm, and pinky finger dislocation, which involves the displacement of the phalanges.

Cultural aspects

In many cultures, the digitus quintus is used in gestures and symbolic expressions. For example, raising the pinky finger can signify delicacy or politeness when drinking tea. In contrast, displaying the pinky finger prominently in certain contexts can be considered rude or offensive in other cultures.

See also

• Hand
• Finger
• Phalanx (bone)
• Muscular system
• Skeletal system