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The radial nerve innervates the finger extensors and the thumb abductor; that is, the muscles that extend at the wrist and metacarpophalangeal joints (knuckles) and abduct and extend the thumb. The median nerve innervates the flexors of the wrist and digits, the abductors and opponens of the thumb, the first and second lumbricals. The ulnar ...
The knuckles at the base of the fingers may be referred to as the 1st [1] or major knuckles while the knuckles at the midfinger are known as the 2nd [2] and 3rd, or minor, knuckles. However, the ordinal terms are used inconsistently and may refer to any of the knuckles. [3] [4]
The muscle bulks that move each finger may be partly blended, and the tendons may be attached to each other by a net of fibrous tissue, preventing completely free movement. Although each finger seems to move independently, moving one finger also moves the other fingers slightly which is called finger interdependence or finger enslaving. [14 ...
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A study published in 2011 examined the hand radiographs of 215 people (aged 50 to 89). It compared the joints of those who regularly cracked their knuckles to those who did not. [17] The study concluded that knuckle-cracking did not cause hand osteoarthritis, no matter how many years or how often a person cracked their knuckles. [17]
In Bharatanatyam, the classical dance of India performed by Lord Nataraja, approximately 48 root mudras (hand or finger gestures) are used to clearly communicate specific ideas, events, actions, or creatures in which 28 require only one hand, and are classified as `Asamyuta Hasta', along with 23 other primary mudras which require both hands and are classified as 'Samyuta Hasta'; these 51 are ...
Hand rubbing. Hand rubbing is a gesture that conveys in many cultures either that one has a feeling of excited expectation, or that one is simply cold. [1] In Ekman and Friesen's 1969 classification system for gestures, hand-rubbing as an indication of coldness is an emblem intentional gesture that could equally well be verbalized.
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