In this study, the diagnostic aspects of facial bone joint injuries were studied in 120 patients, taking into account the hemorrhagic features of the blood. The results of our study showed that in patients with a joint injury of the middle part of the facial skeleton, there are changes in the indicators of functional activity of the endothelium, which peak in 3-5 days. Increased blood viscosity syndrome, increased erythrocyte aggregation, and decreased erythrocyte deformation were also identified. In the course of treatment of patients there is no complete recovery of the indicators characterizing the rheological properties of the blood.

The high growth of injuries, the absence in the country of a unified approach to the treatment of victims with pathology of the bones of the face and skull leads to a sharp increase in the number of patients with post-traumatic deformities, defects, often to their disability and death. This problem has recently acquired the greatest importance in connection with the increase in the number of victims in areas of natural disasters and road traffic accidents. Severe multiple fractures of the bones of the middle zone of the facial skeleton, accompanied by craniocerebral trauma of varying degrees, bleeding and liquorrhea, are often outwardly unnoticeable, since they are hidden by pronounced edema, hemorrhages in soft tissues, and can only be determined with a targeted specialized examination. These types of examinations and the provision of specialized medical care are possible only in multidisciplinary centers. Therefore, these types of injuries are not always diagnosed in a timely manner, especially in severely injured with the presence of pronounced injuries of other localizations.

Fractures are one of the most common components in multiple and associated injuries. Fractures of the lower jaw are observed in 76%, of the upper jaw in 24%, a fracture of the zygomatic-orbital complex in 12%. The actual problem of modern traumatology is the violation of reparative osteogenesis with injuries combined with facial trauma. The duration of the consolidation of fractures is determined by the degree of microcirculation disorders in the fracture zone, changes in cellular and coagulation hemostasis and mineral metabolism. In this connection, increasing the effectiveness of treatment of fractures of the bones of the face on the basis of early diagnosis of vascular and hemostasiological changes is of great importance for practical health care.

This article presents the results of a morphological examination of facial mucosa complications after COVID-19. Infection of patients with COVID-19 with mucormycosis in the oral cavity is manifested in the form of discoloration of the mucous membrane in the area of the palate, swelling, ulcers, necrotic foci on the palate, hard palate and jaw bones, and the dark surface of the bone surface (Brandao et al ., 2020). It should be borne in mind that the recent emergence and development of mucormycosis with COVID-19 is not considered to be fully interrelated, but sufficient causes and conditions for the occurrence of this process during the pandemic, as well as the presence of somatic comorbidities, chronic microbial foci in patients.