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2.
Br J Radiol ; 46(551): 935-42, Nov. 1973.
Artigo em Inglês | MedCarib | ID: med-13323

RESUMO

A skeletal survey was carried out on 84 cases of haemoglobin SC disease. The radiological features noted were increased translucency of bone, abnormal trabecular pattern, medullary expansion, wide vascular channels in phalanges, and radiological evidence of infarction, both medullary and cortical. The frequency of bone lesions thus demonstrated increased with age. The most characteristic lesions in this region were those of vascular necrosis; contributing factors such as the high haemoglobin level characteristic of the condition are discussed. An interesting feature was the lack of correlation betweeen clinical severity and degree of radiological change. (AU)


Assuntos
Humanos , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Anemia Falciforme/diagnóstico por imagem , Doença da Hemoglobina C/diagnóstico por imagem , Anemia Falciforme/complicações , Osso e Ossos/irrigação sanguínea , Osso e Ossos/diagnóstico por imagem , Doenças Ósseas/diagnóstico por imagem , Reabsorção Óssea , Fêmur/diagnóstico por imagem , Necrose da Cabeça do Fêmur/complicações , Dedos/irrigação sanguínea , Dedos/diagnóstico por imagem , Doença da Hemoglobina C/complicações , Quadril/diagnóstico por imagem , Articulação do Quadril , Úmero/diagnóstico por imagem , Infarto , Jamaica , Vértebras Lombares/diagnóstico por imagem , Necrose/sangue , Osteoartrite/complicações , Periósteo/diagnóstico por imagem , Rádio (Anatomia)/diagnóstico por imagem , Vértebras Torácicas/diagnóstico por imagem , Tíbia/diagnóstico por imagem
4.
J Pathol ; 107(2): 137-43, June 1972.
Artigo em Inglês | MedCarib | ID: med-9512

RESUMO

The changes that occurred in the histological appearances of iliac crest biopsies after haemodialysis for chronic renal failure in 16 patients are described. In the majority there is loss of bone and an increase in resorptive activity that resembles that seen in "disues" osteoporosis. The amount of osteoid present increases in most of the patients and other defects of calcification also make their appearance during the period of dialysis. None of the changes is peculiar to patients treated in this way. The findings are discussed in the light of hypotheses advanced on the condition of "dialysis bone disease".(AU)


Assuntos
Humanos , Reabsorção Óssea/etiologia , Diálise Renal/efeitos adversos , Insuficiência Renal Crônica/terapia , Osso e Ossos/patologia , Doenças Ósseas
5.
Am J Phys Anthropol ; 29(2): 155-77, Sept. 1968.
Artigo em Inglês | MedCarib | ID: med-14415

RESUMO

Alizarin red is given intraperitoneally in dosages of 50-200 mg per kg. It stains visibly only one generation of bone. Its deposition is studied in gross specimens and in undecalcified sections, and is controlled by comparison with serial decalcified sections. Apposition of white bone can be followed in relation to red bone on periosteal surfaces (where it presents appearances corresponding to different growth rates), on endosteal surfaces, in osteons, and in the interstitial compaction of cancellous bone. Red surfaces may be sites of deposition, stasis, or resorption. Measurements may be made from red lines, provided microscopic control is available. Removal of red bone implies resorption. It is closely correlated with the presence of osteoclaasts in control sections and with areas of surface pitting grossly. Resorbing surfaces may be precicely delimited by studing a graded series of animals. Whole surfaces or zones of stained bone are seen to drift to other situations, undergoing resorptive dissolution or consolidating anew as they move relative to the newer layers. The usefullness of the dye lies in its simplicity of administration, its ready visibility, and the fact that its persistence in bone enables the fate of areas of bone to be followed over long periods. The preparation of undecalcified sections is a problem common to many other techniques


Assuntos
Cobaias , Coelhos , Ratos , 21003 , Antraquinonas , Desenvolvimento Ósseo , Reabsorção Óssea , Antraquinonas/efeitos adversos , Corantes/efeitos adversos , Úmero/crescimento & desenvolvimento , Injeções Intraperitoneais , Métodos , Periósteo , Crânio/crescimento & desenvolvimento
6.
Am J Phys Anthropol ; 24: 205-12, 1966.
Artigo em Inglês | MedCarib | ID: med-9280

RESUMO

During the growth of a bone, outer (periosteal) surfaces in many areas undergo normal remodeling processes involving resorptive removal. Attachments of muscles commonly occur on such outer resorptive surfaces.The cortex in these regions grows in an inward direction by bone deposition on endosteal surfaces. In some areas of a bone, a portion of muscle can be inserted onto adepository surface, but other parts of the same muscle may be attached on to an adjacent resorptive surface. It has been generally assumed that the pull of a muscle acts to directly stimulate deposition of new bone, and that attachments of muscle are thereby responsible for determining the gross morphology of a whole bone. In view of the foregoing considerations, a re-evaluation and an expansion of this concept is now needed. Muscle pull, in many regions of a bone, can be associated with normal cortical recession (involving surface resorption) as well as with outward bone deposition. (AU)


Assuntos
Humanos , Sistema Musculoesquelético/fisiologia , Reabsorção Óssea/fisiopatologia
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