Little finger
Little Finger
The little finger, also known as the fifth digit, or pinky finger, is the most ulnar and smallest finger of the human hand, opposite the thumb, and next to the ring finger.
Anatomy[edit | edit source]
The little finger has three phalanges: the proximal, middle, and distal, with a metacarpal bone deep to the palmar surface of the hand. The metacarpophalangeal joint (MCP) is the joint at the base of the finger that allows the finger to bend towards the palm. The interphalangeal joints (IP) of the little finger are like hinges that allow the finger to bend and straighten.
Function[edit | edit source]
The little finger contributes greatly to hand strength. It provides approximately 50% of the hand's strength. It is particularly important in grip strength, allowing the hand to carry out tasks such as holding a pen or tool, and gripping a ball or handle.
Cultural significance[edit | edit source]
In many cultures, the little finger is used in gestures and symbolic actions. For example, in the United States, crossing one's fingers, often the index finger over the little finger, is a common gesture for good luck.
Medical significance[edit | edit source]
In medicine, the little finger can be the site of several problems. These include Dupuytren's contracture, a condition that causes the fingers to curl towards the palm, and fractures or dislocations due to injury. The little finger is also often the first part of the hand to be affected by hand-arm vibration syndrome (HAVS).
See also[edit | edit source]
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Contributors: Prab R. Tumpati, MD