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Hand atlas of human anatomy - EducationNest

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Articulatio<br />

radioulnaris distalis<br />

Processus styloideus_<br />

ulnae<br />

Ligamentum coUaterale<br />

carpi ulnare<br />

Os triquetruDi.<br />

Os pisiforme.<br />

Ligamenta intercarpea^.<br />

dorsalia<br />

Os haraatam—<br />

Ligamenta carpometacarpea<br />

dorsalia*"<br />

Ligamenta basium<br />

[ossium meta- -<br />

farpaliuin] dorsal is<br />

.<br />

Joints <strong>of</strong> the Upper Extremity.<br />

III<br />

Ossa metacarpalia<br />

Radius<br />

Ligamentum radiocarpeum<br />

dorsale<br />

Ligamentum coUaterale<br />

carpi radiale_ijj<br />

._0s naTiculare<br />

Os capitatum<br />

Os multangulum niajua<br />

Articulatio carpometacarpea<br />

pollicis<br />

Os multangulum<br />

minus<br />

239. Joints <strong>of</strong> the right hand, articulatio manus,<br />

viewed from the back <strong>of</strong> the hand.<br />

Articulatio manus (continuation). On the dorsal surface, tlie capsule <strong>of</strong> the articu-<br />

latio radiocarpea is strengthened by the ligamentum radiocarpeum dorsale (0. T. posterior<br />

ligament) which goes from the dorsal margin <strong>of</strong> the facies articularis carpea radii in different<br />

divisions to the bones <strong>of</strong> the first row <strong>of</strong> the carpus,<br />

The articulatio intercarpea possesses on the dorsal surface several short strengthening ligaments,<br />

lir/amenta intercarpea dorsalia (0. T. dorsal ligaments), which run usually transversely.<br />

The articulationes carpometacarpeae (carpometacarpal articulations) are formed on the<br />

one side by the distal surfaces <strong>of</strong> the bones <strong>of</strong> the second row <strong>of</strong> the carpus, on the other<br />

side by the proximal surfaces <strong>of</strong> the ossa metacarpalia. Several short perpendicular and oblique'<br />

ligaments on the volar and dorsal surfaces, ligamenta carpometacarpea dorsalia et volana<br />

(0. T. dorsal and palmar hgaments) serve to their capsulae articulares as strengthening ligaments<br />

<strong>of</strong> the latter, that situated furthest ubiarward extends from the hamulus ossis hamati to the<br />

basis ossis metacarpalis V and is called the ligamentum hamatometacarpeum (see Fig'. 238).<br />

The articulationes intermetacarpeae (articulations <strong>of</strong> the metacarpal hones with one<br />

another) have their origin in that the proximal ends <strong>of</strong> the second to the fifth metacarpal<br />

bones can move upon one another by means <strong>of</strong> their lateral surfaces which are covered with<br />

cartilage. Their capsulae ariiculares are strengthened by short transversely directed fibre<br />

bands, ligamenta basium [ossium metacarpalium] dorsalia et volaria <strong>of</strong> which there are four<br />

on the back <strong>of</strong> the hand, but only three in the hollow <strong>of</strong> the hand (the ligament between the<br />

OS metacarpalo I and II is absent) (see also Kg. 238).<br />

;

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