Search results
Results from the WOW.Com Content Network
The thumb possesses a unique and wide range of motion not shared by the hand’s other digits. Not only does it bend its knuckle, but the tip of the thumb can touch the tips of the fingers.
The human hand, the most distal part of the upper limb, is a remarkable feat of engineering and evolution. It is strong enough to allow climbers to tackle any mountain, but also sufficiently precise for the manipulation of some of the world’s smallest objects and the performance of complex actions.
Anatomists and other researchers focused on human anatomy have hundreds of definitions of opposition. [4] Some anatomists [5] restrict opposition to when the thumb is approximated to the fifth finger (little finger) and refer to other approximations between the thumb and other fingers as apposition.
The thumb has two phalanges, whilst the rest of the fingers have three. In this article, we shall look at the anatomy of the bones of the hand – their structure, articulations and clinical correlations.
Your hand begins where your wrist ends. It includes your palm, fingers and thumb. How are the hand and wrist structured? Your hand and wrist are structured to allow you to move, flex and rotate your wrist joint and to use your hand to grab and touch objects.
thumb, short, thick first digit of the human hand and of the lower-primate hand and foot. It differs from other digits in having only two phalanges (tubular bones of the fingers and toes). The thumb also differs in having much freedom of movement and being opposable to tips of other digits.
The human hand is an extraordinary part of the upper limb, built for power and precision. It is necessary to feel and do things with our hands. It can handle challenging tasks like climbing mountains and delicate actions like manipulating small objects.
Most of the small muscles that work the thumb and pinky finger start on the carpal bones. These muscles connect in ways that allow the hand to grip and hold. Two muscles allow the thumb to move across the palm of the hand, an important function called thumb opposition.
The thumb is the first digit of the hand. The skeleton of the thumb consists of the first metacarpal bone which articulates proximally with the carpus at the carpometacarpal joint and distally with the proximal phalanx at the metacarpophalangeal joint. This latter bone articulates with the distal phalanx at the interphalangeal joint.
The thumb is the first of the hand's five digits, but it is typically not referred to as a finger. The thumb possesses a unique and wide range of… READ MORE