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Impairments of immune system are an important mechanism of the degenerative dystrophic processes in the arthral tissues onset and development.The objective of this research was to study the cellular immunity condition in patients with osteoarthrosis before and after endoprosthesis implantation. The research methods included immunophenotyping of lymphocytes in the peripheral blood. The immunologic impairments before the surgery referred to change in T-cell immunity reflecting in the imbalance of immunoregulatory subpopulations (decrease of T-suppressor level and increase of T-helper content). At that the number of NK-cells rose which didn’t exclude a possible connection with the cartilage tissue degradation impurities on the background of B-cell number decrease. During the post-surgery period the decrease in T-helper and T-suppressor numbers was detected which may be related to their migration to implantation area due to the decrease of their number in the systemic circulation, at that no significant changes in T-lymphocytes were observed. By contrast, there was a decrease of NK-cell number at higher level of B-cell number showing an adequate response of the bodies for surgery aggression. The results of immunological research are worth being taken into account when preparing patients for endoprosthesis implantation surgery for the purpose of prescribing the immune-correcting drugs for pre-existing impairments of cellular immunity as well as in the post-surgery period to relieve the effects of surgical interference aggravating the impairments in this population of patients.

THE CONDITION OF CELLULAR IMMUNITY IN PATIENTS WITH OSTEOARTHROSIS BEFORE AND AFTER ENDOPROSTHESIS IMPLANTATION