The diseases of infants and children . Radioguaph of the Wkist in the enlarKcrnent at the wrist-joint. From a colored child, aged 2 years aud 9months, in the Childrens Hospital of Philadelphia. LongitU(Hnal section shows the junction of the shaft and the epiphysesmuch wider, thicker and softer than normal (Fig. 199) with a broadeningof the bluish, cartilaginous layer. The centres of ossification are liyper-emic, spongy and enlarged. It is to this and to the general widening ofthe cartilaginous layer, that the enlargement of the epiphysis is medulla of the shaft is redder
The diseases of infants and children . Radioguaph of the Wkist in the enlarKcrnent at the wrist-joint. From a colored child, aged 2 years aud 9months, in the Childrens Hospital of Philadelphia. LongitU(Hnal section shows the junction of the shaft and the epiphysesmuch wider, thicker and softer than normal (Fig. 199) with a broadeningof the bluish, cartilaginous layer. The centres of ossification are liyper-emic, spongy and enlarged. It is to this and to the general widening ofthe cartilaginous layer, that the enlargement of the epiphysis is medulla of the shaft is redder and more jelly-like than normal and themedullary cavity broadened and its bony divisions rarefied. The perios-teum of both the flat and long bones is hyperemic, and beneath it are 588 THE DISEASES OF CHILDREN several layers of friable, spongy, vascular tissue, with large inter-trabecular spaces. Microscopically there are very characteristic changes seen. Theproliferating layer of the epiphyseal cartilage, situated next to the hyahne. Fig. 196.âAnatomical Specimen of Rachitic the rachitic rosary produced by enlargement at the costo-chondral articulations. cartilage, is hyperemic and the cartilage cells more numerous than nor-mal and irregularly arranged. The columnar zone next to it is still moreaffected in the same way, being abnormally wide and exhibiting anunusual length of columns of cells and increase of vascularity. This
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Keywords: ., bookcentury1900, bookdecade1910, booksubject, booksubjectchildren
