Peculiarities of the course of radiation-mechanical injuries during modeling of bone-muscular trauma of the limbs in expirement

Abstract

Experimental data on the course of the wound process and changes in the internal organs of animals during acute radiation sickness are presented. Morphological changes in the wound and with a fracture of the femur, on the model of combined radiation-mechanical conduction in 30 experimental animals (rats). It was found that wounds after primary surgical treatment often suppurate, and the performed osteosynthesis in fractures of tubular bones turns out to be an untenable delivery of metal structures. An unfavorable course of the wound process is noted in the form of pronounced purulent-necrotic changes in soft tissues, which leads to the appearance of degenerative-dystrophic changes in internal organs in experimental animals. The development of the infectious process in the wound, radiation damage is more severe, while the lethality increases by 2023%. The total area and thickness of the newly formed granulation tissue is 1,52 times less than in non-irradiated animals. As a consequence of the disturbance of reparative processes during the development of the mutual burdening syndrome, the consolidation of the fracture with radiation injury to rats was completed in 28,51,2 days, while in non-irradiated animals it was already by 2023 days. The reason for the death of animals is purulent-septic complications in 21 (73%) irradiated rats. Sepsis due to St. aureus was noted in 14 (66,6%) rats and St. epidermalis in 2 (9,5%) animals. Colibacillary sepsis was recorded in 5 (23,8%) rats. Thus, in the conditions of the use of weapons of mass destruction, radiation-mechanical damage will occupy one of the leading places in the structure of sanitary losses. At the same time, the simultaneous effect of radiation and a mechanical factor on the body forms one of the most dangerous variants of damage, in which a favorable outcome is predicted only in milder forms of acute radiation syndrome and provided that surgical treatment is timely.