[Reparative Osteogenesis and Angiogenesis in Low Intensity Electromagnetic Radiation of Ultra-High Frequency].
BACKGROUND
Non-drug correction of reparative bone tissue regeneration in different pathological states - one of the most actual problems of modern medicine.


OBJECTIVE
Our aim was to conduct morphological analysis of the influence of electromagnetic radiation of ultra-high frequency and low intensity on reparative osteogenesis and angiogenesis in fracture treatment under transosseous osteosynthesis.


METHODS
A controlled nonrandomized study was carried out. In the experiment conducted on rats we modeled tibial fracture with reposition and fixation of the bone fragments both in control and experimental groups. In the animals of the experimental group the fracture zone was exposed to low intensity electromagnetic radiation of ultra-high frequency. Exposure simulation was performed in the control group. The operated bones were examined using radiography, light and electronic microscopy, X-ray electronic probe microanalysis.


RESULTS
It has been established that electromagnetic radiation of ultra-high frequency sessions in fracture treatment stimulate secretory activity and degranulation of mast cells, produce microcirculatory bed vascular permeability increase, endotheliocyte migration phenotype expression, provide endovascular endothelial outgrowth formation, activate reparative osteogenesis and angiogenesis while fracture reparation becomes the one of the primary type. The full periosteal, intermediary and intraosteal bone union was defined in 28 days.


CONCLUSIONS
Among the therapeutic benefits of electromagnetic radiation of ultra-high frequency in fracture treatment we can detect mast cell secretorv activity stimulation and endovascular anziozenesis activation.
Y M
YM
Iryanov
N A
NA
Kiryanov
D000818:Animals; D001861:Bone Regeneration / Q000528:radiation effects*; D001842:Bone and Bones / Q000098:blood supply / Q000528:radiation effects; D004195:Disease Models, Animal; D060733:Electromagnetic Radiation; D004577:Electron Probe Microanalysis / Q000379:methods; D005593:Fracture Fixation, Internal / Q000534:rehabilitation; D050723:Fractures, Bone / Q000628:therapy*; D008854:Microscopy, Electron / Q000379:methods; D018919:Neovascularization, Physiologic / Q000528:radiation effects*; D010012:Osteogenesis / Q000528:radiation effects*; D000078702:Radiofrequency Therapy; D051381:Rats; D016896:Treatment Outcome