Hand: From 4 Different Sources
TIGHTENING OF SINEWS. See: DUPUYPTREN’S CONTRACTURE.
The hand is made up of the wrist, palm, and fingers. Movement of the hand is achieved mainly by tendons that attach the muscles of the forearm to the bones of the hand (the carpals, metacarpals, and phalanges) or by short muscles in the palm of the hand.
The hands are highly susceptible to injury. Dermatitis is also common. The hand may be affected by Dupuytren’s contracture or Volkmann’s contracture. Degeneration of a tendon sheath on the upper side of the wrist may cause a harmless swelling called a ganglion. Osteoarthritis commonly affects the joint at the base of the thumb. Rheumatoid arthritis may cause deformity.
In structure, the hand has a bony basis of eight small carpal bones in the wrist, ?ve metacarpal bones in the ?eshy part of the hand, and three phalanges in each ?nger – two only in the thumb. From the muscles of the forearm, 12 strong tendons run in front of the wrist. Of these, nine go to the ?ngers and thumb and are bound down by a strong band, the ?exor retinaculum, in front of the wrist. They are enclosed in a complicated synovial sheath, and pass through the palm and down the ?ngers. Behind the wrist, 12 tendons likewise cross from forearm to hand.
Forming the ball of the thumb and that of the little ?nger, and ?lling up the gaps between the metacarpal bones, are other muscles, which act to separate and bring together the ?ngers, and to bend them at their ?rst joints (knuckles).
n. the terminal organ of the upper limb. From a surgical point of view, the human hand comprises the eight bones of the *carpus (wrist), the five metacarpal bones, and the phalangeal bones plus the surrounding tissues; anatomically, the bones and tissues of the wrist are excluded. The hand is a common site of infections and injuries, many of which are of industrial origin for which compensation may be claimed.
A disadvantage for a given individual, resulting from an impairment or a disability that limits or prevents the fulfilment of a role that is normal (depending on age, sex and social and cultural practice) for that individual. The term handicap thus reflects interaction with, and adaptation to, the individual’s surroundings. See also “disability”; “impairment”.... handicap
A (contraction) deformity of the hand and ?ngers, especially of the ring and little ?ngers. The condition is generally due to paralysis of the ULNAR NERVE. A somewhat similar condition is produced by contraction of the ?brous tissues in the palm of the hand, partly due to rheumatic changes and partly to injury caused by the constant pressure of a tool against the palm of the hand. (See DUPUYTREN’S CONTRACTURE.)... claw-hand
See LEARNING DISABILITY.... mental handicap
A rare congenital abnormality characterised by the absence of one or more ?ngers and a deep central cleft that divides the hand into two. It is sometimes known as lobster hand. It may be accompanied by other congenital defects, such as CLEFT FOOT, absent permanent teeth, CLEFT PALATE (and/or lip), absence of the nails and defects of the eye.... cleft hand
(Turkish) A woman with an infectious smile... hande
Looking for articles, not by searching electronic databases, but by systematically going through journals.... handsearching
A systematic taxonomy of the consequences of injury and disease. See “disability”; “handicap”; “impairment”.... international classification of impairments, disabilities and handicaps (icidh)
Employment, Luck, Protection, Money, Travel... lucky hand
Pain and numbness in the hand and arm due to prolonged use of vibrating tools. Symptoms often also include blue or white coloration of the fingers and a tingling sensation in affected areas. Hand–arm vibration syndrome tends to develop slowly over years and is the result of repeated damage to blood vessels and nerves. Exposure to cold tends to aggravate the condition. There is no specific treatment, but avoiding vibrating tools is essential to prevent the disease progressing. In some cases, calcium channel blockers may help relieve some symptoms.... hand–arm vibration syndrome
Pain and stiffness affecting one shoulder and the hand on the same side; the hand may also become hot, sweaty, and swollen. Arm muscles may waste through lack of use (see Sudeck’s atrophy). The cause of shoulder–hand syndrome is unknown, but it may occur as a complication of myocardial infarction, stroke, herpes zoster, or shoulder injury. Recovery usually occurs in about 2 years. This period may be shortened by physiotherapy and corticosteroid drugs. In rare cases, a cervical sympathectomy is performed.... shoulder–hand syndrome
a piece of dental equipment (high-speed or low-speed) for holding a dental *bur or *file. It is made of corrosion-resistant materials to allow sterilization. See drill.... dental handpiece
the combination of features, often found in the hands of long-standing diabetic subjects, consisting of *Dupuytren’s contractures, knuckle pads, *carpal tunnel syndrome, *cheiroarthropathy, and sclerosing *tenosynovitis.... diabetic hand syndrome
see palmoplantar erythrodysaesthesia.... hand–foot syndrome
see Langerhans cell histiocytosis. [A. Hand (1868–1949), US paediatrician; A. Schüller (1874–1958), Austrian neurologist; H. A. Christian (1876–1951), US physician]... hand–schüller–christian disease
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