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4.
Ortop Travmatol Protez ; (3): 17-20, 1989 Mar.
Artigo em Russo | MEDLINE | ID: mdl-2740108

RESUMO

The authors have observed 55 patients with fresh fractures, with disturbances in consolidation (delayed consolidation, non-union of fractures, false joints) and with defects of diaphyses of the long bones. In the fracture area the dynamics of oxidation-reduction potential (ORP) was studied and volarographic investigations (determination of the volumetric speed of the local blood flow by hydrogen, a test with oxygen load) were carried out. Certain correlation between the quantity and the dynamics of the values under study and the state of the consolidation process was established. Coincidence of the dynamics of ORP and the local blood flow, presence of the quantity of volumetric speed of the local blood flow of 25-30 ml/min per 100 g of tissue with rather high ORP and a positive test under oxygen load in the polarographic study were prognostically favourable. The applied methods allow to control the course of the process of consolidation of the fragments and to a certain extent prognosticate the results of treatment of the patients with fractures of the long bones.


Assuntos
Fraturas Ósseas/metabolismo , Oxirredução , Fraturas do Fêmur/metabolismo , Fraturas não Consolidadas/metabolismo , Humanos , Fraturas do Úmero/metabolismo , Polarografia , Prognóstico , Pseudoartrose/metabolismo , Fraturas do Rádio/metabolismo , Fraturas da Tíbia/metabolismo , Fraturas da Ulna/metabolismo
8.
Biull Eksp Biol Med ; 91(6): 719-22, 1981 Jun.
Artigo em Russo | MEDLINE | ID: mdl-6974018

RESUMO

Electron microscopy was used to study the regenerating bone tissue in experimental resection of the diaphysis fragment of the rabbit radius under osteogenesis stimulation by means of pulsed low-frequency electric current. Proliferation and differentiation of fibroblasts and osteoblasts of the bone regenerating tissue were more active under electric stimulation. Hypertrophy and hyperplasia of cell organelles occurred earlier as compared with control. Cell secretion was found to be intensified, manifesting by output of greater amounts of collagen protein. As a result of changes listed, the newly formed bone tissue rapidly filled the defect between the fragments.


Assuntos
Osso e Ossos/ultraestrutura , Terapia por Estimulação Elétrica , Fraturas Ósseas/terapia , Osteogênese , Cicatrização , Animais , Fraturas Ósseas/patologia , Microscopia Eletrônica , Coelhos
11.
Biull Eksp Biol Med ; 86(9): 361-2, 1978 Sep.
Artigo em Russo | MEDLINE | ID: mdl-308822

RESUMO

Experiments were conducted on rabbits. Changes in ATP in the regenerating bone tissue after incomplete osteotomy and removal of a bone section, and also in cases of reparative osteogenesis stimulation in the region of the bone defect by means of pulse electric current were studied. ATP content in the bone callus after incomplete osteotomy and electrostimulation proved to exceed such in the regenerating bone tissue following removal of the bone fragment when no stimulation was applied. On the basis of the data obtained it is suggested that improvement of energy provision of the fracture consolidation process was one of the important links in the mechanism of stimulating influence of the electric current on the reparative regeneration of the bone tissue.


Assuntos
Trifosfato de Adenosina/metabolismo , Calo Ósseo/metabolismo , Fraturas Ósseas/terapia , Animais , Terapia por Estimulação Elétrica , Fraturas Ósseas/metabolismo , Coelhos , Cicatrização
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