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Updated: June 6, 2025
The sub-deltoid or sub-acromial bursa, which usually presents a single cavity and does not normally communicate with the shoulder-joint, is indispensable in abduction and rotation of the humerus. When the arm is abducted, the fixed lower part or floor of the bursa is carried under the acromion, and the upper part or roof is rolled up in the same direction, hence tenderness over the inflamed bursa may disappear when the arm is abducted (Dawbarn's sign). It is liable to traumatic affections from a fall on the shoulder, pressure, or over-use of the limb. Pain, located commonly at the insertion of the deltoid, is a constant symptom and is especially annoying at night, the patient being unable to get into a comfortable position. Tenderness may be elicited over the anatomical limits of the bursa, and is usually most marked over the great tuberosity, just external to the inter-tubercular (bicipital) groove. When adhesions are present, abduction beyond 10
It is usually made from stiff cardboard, A-shaped in outline, as shown in Figs. 44 and 45, and bent along a central line, as at A, forming two wings, each of which is a right-angled triangle. Deltoid Formation. The peculiarity of this formation is, that it has remarkable stability when used as a kite, with either end foremost.
Of the upper arm: The biceps on the front side, the triceps behind, and the deltoid at the upper part of the arm beyond the projection of the shoulder. Of the hand: The adductor pollicis between the thumb and the palm.
His limbs were not very large, nor his shoulders remarkably broad; but if you knew as much of the muscles as all persons who look at statues and pictures with a critical eye ought to have learned, if you knew the trapezius, lying diamond-shaped over the back and shoulders like a monk's cowl, or the deltoid, which caps the shoulder like an epaulette, or the triceps, which furnishes the calf of the upper arm, or the hard-knotted biceps, any of the great sculptural landmarks, in fact, you would have said there was a pretty show of them, beneath the white satiny skin of Mr.
There is probably nothing that has such a tranquilizing effect, and leads into such content as gardening. By gardening, I do not mean that insane desire to raise vegetables which some have; but the philosophical occupation of contact with the earth, and companionship with gently growing things and patient processes; that exercise which soothes the spirit, and develops the deltoid muscles.
It enters the river of this name by a forked or deltoid channel, its waters making their way through a marshy tract of country in numerous slow flowing riachos, whose banks, thickly overgrown with a lush sedgy vegetation, are almost concealed from the eye of the explorer.
The white birch will spring up in the poorest kind of soil, and it is found in the highest latitude in which any tree can live. Its leaf is 'deltoid' in shape and indented at the edge.
The man, although of middle height and erect carriage, had so vast a spread and depth of chest, development of the deltoid muscles so unusual, and length of arm so unnatural as to establish the effect at once of power and deformity; to which the yellow skin, high cheek-bones, small eyes, and the thin black moustaches, drooping long and perpendicular from each corner of the broken-toothed mouth, added an expression of cruelty so unmitigated that Amaryllis turned sick at the sight, closing her eyes in dreadful disgust; while the European leather and cloth costume of a chauffeur not only added horror to the outlandish figure, but gave Dick Bellamy almost the certainty that here was yet another accomplice of Alban Melchard.
It appeared that he was that sort of a man that, if a man wanted anything of him, he had only to speak for it "wunst;" and that one of his peculiarities was an instant response of the deltoid muscle to the brain, though he did not express it in that language.
He claims support for the permeation theory from the fact that the humerus is rarely involved below the insertion of the deltoid, and that spontaneous fracture of the femur is three times more common on the side on which the breast cancer is situated. The tumour tissue may undergo necrosis, and when the overlying skin or mucous membrane gives way an ulcer is formed.
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