D factor
| split hand | A congenital deformity in which the division between the fingers, especially between the third and fourth, extends into the metacarpal region. See: lobster-claw deformity. Synonym: main fourchee, split hand. (05 Mar 2000) |
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| navicular bone of hand | The largest bone of the proximal row of the carpus on the lateral (radial) side, articulating with the radius, lunate, capitate, trapezium, and trapezoid. Synonym: os scaphoideum, navicular bone of hand, os naviculare manus. (05 Mar 2000) |
| Dejerine's hand phenomenon | Clonic contractions of the flexors of the hand (wrist) on tapping the dorsum of the hand or the volar side of the forearm near the wrist; occurs in normal persons but is exaggerated in pyramidal tract lesions. Synonym: Dejerine's reflex. (05 Mar 2000) |
| synovial sheaths of digits of hand | The synovial sheaths that enclose the flexor tendons of the fingers and line the inside of the fibrous tendon sheaths. Synonym: vaginae synoviales digitorum manus. (05 Mar 2000) |
| dorsal digital nerves of hand | Terminal branches of the radial and ulnar nerves in the hand supplying the skin of the dorsal surface of the proximal and middle phalanges of the fingers. Synonym: nervi digitales dorsales, dorsal digital nerves. (05 Mar 2000) |
| dorsal fascia of hand | The deep fascia of the back of the hand continuous proximally with the extensor retinaculum. Synonym: fascia dorsalis manus. (05 Mar 2000) |
| dorsal interosseous muscles of hand | Four muscles in the hand; origin, sides of adjacent metacarpal bones; insertion, proximal phalanges and extensor expansion, first on radial side of index, second on radial side of middle finger, third on ulnar side of middle finger, fourth on ulnar side of ring finger; action, abduct fingers 2-4 from the axis of the middle finger, nerve supply, ulnar. Synonym: musculi interossei dorsalis manus. (05 Mar 2000) |
| dorsal venous network of hand | A superficial network of veins on the dorsum of the hand emptying into the cephalic and the basilic veins. Synonym: rete venosum dorsale manus. (05 Mar 2000) |
| dorsum of hand | The back of the hand. Synonym: dorsum manus. (05 Mar 2000) |
| drop hand | Paralysis of the extensors of the wrist and fingers; most often caused by lesion of the radial nerve. Synonym: carpoptosis, carpoptosia, drop hand. (05 Mar 2000) |
| interphalangeal joints of hand | The hinge synovial joints between the phalanges of the fingers. Synonym: articulationes interphalangeae manus, digital joints, interphalangeal articulations, phalangeal joints. (05 Mar 2000) |
| obstetrical hand | Position of the hand in tetany or in muscular dystrophy; the fingers are flexed at the metacarpophalangeal joints and extended at the phalangeal joints, with the thumb flexed and adducted into the palm; in resemblance to the position of the physician's hand in making a vaginal examination. Synonym: main d'accoucheur, obstetrical hand. (05 Mar 2000) |
| one-hand | Employing one hand; as, the one-hand alphabet. See: dactylology. (04 Mar 1998) |
| opera-glass hand | A deformity of the hand seen in chronic absorptive arthritis, the fingers and wrists being shortened and the covering skin wrinkled into transverse folds; the phalanges appear to be retracted into one another like an opera glass or miniature telescope. Synonym: main en lorgnette. (05 Mar 2000) |
| EF hand | A very common calcium binding motif. A 12 amino acid loop with a 12 amino acid _ helix at either end, providing octahedral co-ordination for the calcium ion. Members of the family include: aequorin, _ actinin, calbindin, calcineurin, calcyphosin, calmodulin, calpain, calcyclin, iacylglycerol kinase, fimbrin, myosin regulatory light chains, oncomodulin, osteonectin, spectrin, troponin C. (18 Nov 1997) |