[The mechanisms and sequence of the changes in the morphological properties of rib fractures with time].

The authors describe the biotribological process, disclose mechanisms and time course of morphological changes in fractured bones as exemplified by interactions between the ends of fragments in an extension fracture of a rib. These changes result from contacts between fragments due to persistent respiration and parallel processes closely connected, friction and repair regeneration. The data on mechanisms and time course of morphological changes in a fractured bone may prove useful not only for forensic medicine specialists, but for traumatologists as well.

[Target removal of the elements of fertilized ovum in "mini-abortion"].

A target removal of a fetal ovum was performed in early pregnancy with delayed menstruation (up to 20 days) by employing a hysteroscope in 87 females. As compared with the transabdominal method of ultrasound diagnosis for early pregnancy, the hysteroscopic assessment of the fetal ovum proved to be more informative with delayed menstruation (from 5 to 15 days). Target aspiration increases the efficiency of pregnancy interruption and repeated hysteroscopic monitoring makes it possible to avoid complications as delay of fetal ovum elements.

[Status of the celiac plexus in patients with extravasal compression of the celiac trunk and its role in the etiology of pain syndrome].

The technique and results of surgical treatment of 109 patients with extravasal compression of the celiac trunk (ECCT), which in 77 patients was combined with a duodenal ulcer, are described. In the celiac plexus of the patients with ECCT, the inflammatory-sclerotic changes of a different degree of pronouncement were revealed. It was established that periarterial sympathectomy of the celiac artery and its branches had an essential effect on the state of gastric functions.

The role of T-system immunity in reparatory regeneration of the bone tissue in animals.

It has been demonstrated in experiments on mice (CBA X C57BL) X F1, thymectomized and irradiated by 800 R, with the haemopoietic system restored by bone marrow (B-mice) that in these animals, as compared with the controls, the changes in cellular immunity (inhibition of natural killer cells and stimulation of individual functions of the phagocytizing cells) are accompanied by considerable inhibition of osteogenesis. Compensatory regeneration of broken thigh-bone in B-mice is delayed by 5--10 days in various elements of the regenerated tissue in comparison with normal mice. Anatomical formation of the provisional callus in B-mice is not completed on day 21 and approaches a 14-day regenerate of the controls.