Practical pathology; a manual for students and practitioners . e by pressureof aneurisms or tumours, or as a general condition sometimes knownas osteoporosis—a term which refers simply to the naked-eyeappearances. Whether the rarefaction be due to general or local inflammation,the results are much the same. Naked-eye appeara7ices.—The periosteum is usually thickened and RAREFYING OSTEITIS 589 fleshy, and may be highly vascular. On longitudinal section the boneis found to be extremely vascular, the dense layer near the surface maybe very thin, the marrow spaces are large, and the trabeculje are
Practical pathology; a manual for students and practitioners . e by pressureof aneurisms or tumours, or as a general condition sometimes knownas osteoporosis—a term which refers simply to the naked-eyeappearances. Whether the rarefaction be due to general or local inflammation,the results are much the same. Naked-eye appeara7ices.—The periosteum is usually thickened and RAREFYING OSTEITIS 589 fleshy, and may be highly vascular. On longitudinal section the boneis found to be extremely vascular, the dense layer near the surface maybe very thin, the marrow spaces are large, and the trabeculje are notonly diminished in thickness, but are exceedingly rough and irregular,and the spongy tissue is open and friable. Within the spaces themedulla is red and gelatinous. Prepare a piece of the porous bone taken from the end of a stump(§§ 75 and 79 or 80), stain (S§ 102, 103, 110 (/;) and 132 and 133), andmount (§ 195 or 199). (x 50).—Near the free extremity of the bone the Haversiancanals are usually undergoing great enlargement, and their walls are.
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