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  • Konev, V. P.  (2)
  • 1
    In: Vestnik travmatologii i ortopedii imeni N.N. Priorova, ECO-Vector LLC, , No. 4 ( 2017-12-30), p. 25-30
    Abstract: Purpose: to elaborate the criteria for the assessment of the degree of spinal motion segment degradation at various methods for posterior spine fixation in experiment. Material and methods . The study included mongrel dogs with body mass of 12±1.5 kg aged 21±3 months. Transpedicular lumbar spine fixation was performed with either rigid titanium alloy rods (1st group, n=5) or dynamic nitinol rods (2nd group, n=5). X-ray examination and morphologic study of the structural elements of spinal motion segment (SME) were performed to all animals in 3, 6, 12, 18 and 24 months after surgery. Results . Functional examination showed that in both groups the range of motion made up 18±1.2° preoperatively. In the 1st group of animals the range of motion in the operated SME made up 0±0.03°. In the second group the range of motion was preserved throughout the experiment and averaged 15±1.3° that made up 78.9% of the preoperative range. In both groups the disc height at the fixation level was constant throughout the experiment and made up 0,3±0.003 cm pre- and postoperatively. Obtained roentgenologic and morphologic data indicated that posterior dynamic spine fixation with nitinol rods ensured more balanced distribution of loads on the supportive elements of the construction and enabled prevent the development of the adjacent segments degeneration. Based on the study results the criteria for the assessment of the degree of the facet joints and discs degradation were formulated.
    Type of Medium: Online Resource
    ISSN: 0869-8678
    URL: Issue
    Language: Unknown
    Publisher: ECO-Vector LLC
    Publication Date: 2017
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  • 2
    Online Resource
    Online Resource
    ECO-Vector LLC ; 2020
    In:  Russian Journal of Forensic Medicine Vol. 6, No. 1 ( 2020-03-25), p. 14-20
    In: Russian Journal of Forensic Medicine, ECO-Vector LLC, Vol. 6, No. 1 ( 2020-03-25), p. 14-20
    Abstract: Bone regeneration of patients with osteoporosis takes significantly longer than the rehabilitation period of individuals without bone pathology. This is due to the predominance of destructive processes in the setting of osteoblastic reaction weakened by osteoporosis, persistent inflammatory reactions, as well as proliferating connective tissue.Aim. Тo study the nature and dynamics of processes involved in the destruction and regeneration of bone tissue under various conditions, taking forensic medical assessment into account.Material and methods. We studied the autopsy and biopsy material of bone tissue using clinical-instrumental and histological research methods.Results. Using atomic force microscopy, it was found that in individuals with osteoporosis the formation of endosteal callus exhibits features associated with the impaired interlacing of collagen fibres due to the expanded space between them, and, as a result, an impaired connection between osseous structures with a low level of mineralisation.Conclusion. In accordance with paragraph 24 of Order 194n On the Approval of Medical Criteria for Determining the Severity of Harm to Human Health verified systemic osteoporosis that was the setting for the fracture, which in fact is a pathological fracture, should not be considered as damage to health.
    Type of Medium: Online Resource
    ISSN: 2409-4161 , 2411-8729
    URL: Issue
    Language: Unknown
    Publisher: ECO-Vector LLC
    Publication Date: 2020
    Library Location Call Number Volume/Issue/Year Availability
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