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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">genort</journal-id><journal-title-group><journal-title xml:lang="ru">Гений ортопедии</journal-title><trans-title-group xml:lang="en"><trans-title>Genij Ortopedii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-4427</issn><issn pub-type="epub">2542-131X</issn><publisher><publisher-name>ЦЕНТР ИЛИЗАРОВА</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18019/1028-4427-2021-27-2-187-198</article-id><article-id custom-type="elpub" pub-id-type="custom">genort-2619</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Original articles</subject></subj-group></article-categories><title-group><article-title>Факторы прочности лучевой кости после формирования краевого дефекта</article-title><trans-title-group xml:lang="en"><trans-title>Factors of radial bone strength after marginal defect formation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александров</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Aleksandrov</surname><given-names>N. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александров Николай Михайлович, д. м. н.,</p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Nikolai M. Aleksandrov, M.D., Ph.D.,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">aleksandrov-chetai@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вешуткин</surname><given-names>В. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Veshutkin</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вешуткин Владимир Дмитриевич, к. т. н., </p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Vladimir D. Veshutkin, Ph.D. of Engineering Sciences,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">vveshutkin@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жуков</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhukov</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жуков Александр Евгеньевич, к. т. н.,</p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Aleksandr E. Zhukov, Ph.D. of Engineering Sciences,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">vveshutkin@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вешаев</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Veshaev</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вешаев Иван Денисович,</p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Ivan D. Veshaev, M.D.,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">vveshutkin@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Купцов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuptsov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Купцов Дмитрий Алексеевич,</p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Dmitriy A. Kuptsov, M.D.,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">vveshutkin@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Углёв</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Uglev</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Углёв Олег Иванович,</p><p>г. Нижний Новгород</p></bio><bio xml:lang="en"><p>Oleg I. Uglev, M.D.,</p><p>Nizhny Novgorod</p></bio><email xlink:type="simple">vveshutkin@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное Государственное бюджетное образовательное учреждение высшего образования «Приволжский исследовательский медицинский университет» Миистерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky Research Medical University;&#13;
Nizhny Novgorod State Technical University n.a. R.E. Alekseev</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральное Государственное бюджетное образовательное учреждение высшего профессионального образования&#13;
«Нижегородский государственный технический университет им. Р.Е. Алексеева» Министерства науки и образования России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nizhny Novgorod State Technical University n.a. R.E. Alekseev</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное Государственное бюджетное образовательное учреждение высшего образования «Приволжский исследовательский медицинский университет» Миистерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Privolzhsky Research Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>04</month><year>2021</year></pub-date><volume>27</volume><issue>2</issue><issue-title>№ 2 (2021)</issue-title><fpage>187</fpage><lpage>198</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Александров Н.М., Вешуткин В.Д., Жуков А.Е., Вешаев И.Д., Купцов Д.А., Углёв О.И., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Александров Н.М., Вешуткин В.Д., Жуков А.Е., Вешаев И.Д., Купцов Д.А., Углёв О.И.</copyright-holder><copyright-holder xml:lang="en">Aleksandrov N.M., Veshutkin V.D., Zhukov A.E., Veshaev I.D., Kuptsov D.A., Uglev O.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.ilizarov-journal.com/jour/article/view/2619">https://www.ilizarov-journal.com/jour/article/view/2619</self-uri><abstract><sec><title>Цель</title><p>Цель. Определить с использованием расчетных методов влияние биометрических параметров лучевой кости и сформированного краевого дефекта на ее прочностные свойства.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Факторы, влияющие на прочность кости, исследованы с применением экспериментальных и расчетных методов. На 10 парах трупных лучевых костей человека были изучены биометрические параметры в условиях целой кости и после формирования краевых вырезов прямоугольной и треугольной формы. Математические расчеты с целью определения напряженно-деформированного состояния (НДС) выполнялись на основе технической теории изгиба балок для изотропного материала. Численные исследования выполнены с помощью метода конечных элементов в программном комплексе NX Siemens. Расчетным путем на основе принятых математических моделей выявлены реальные области безопасных нагрузок при наличии выреза, величины разрушающих нагрузок в зависимости от глубины и формы выреза с учетом размеров начальной погиби (кривизны кости), а также критерии необходимой остаточной прочности при вариации влияющих параметров.</p></sec><sec><title>Результаты</title><p>Результаты. Установлено, что увеличение кривизны кости приводит к уменьшению продольных разрушающих нагрузок и увеличению значений нормального напряжения. Кривизна кости 0,05 в сочетании с вырезом 0,5 приводят к снижению предельной нагрузки в 20 раз (для прямоугольного выреза до 4,8 % , а треугольного – 5,4 %). Наличие выреза глубиной 0,5 в кости, имеющей кривизну 0,05, повышает нормальное напряжение в 6,9 раза для треугольного выреза и в 7,8 раза для прямоугольного по сравнению с костью без погиби. Установлены критические значения кривизны и глубины выреза, при которых можно обходиться без дополнительного укрепления кости.</p></sec><sec><title>Заключение</title><p>Заключение. Прочность лучевой кости с краевым дефектом зависит не только от глубины выреза, но и его расположения, формы, а также кривизны лучевой кости в двух плоскостях. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose</title><p>Purpose. To determine the effect of biometrical parameters of the radial bone and due to edge defect formed on the radius strength properties using calculation methods.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. The study of bone strength affecting factors was conducted with the aid of experimental and calculation methods. Biometrical parameters were studied in 10 pairs of the human cadaveric radius as an intact bone initially and after the formation of rectangular or triangle-shaped edge cuts. To determine the stress-strain behaviour, mathematical calculations were performed based on the beam flexural theory for isotropic materials. Computation study were conducted using the finite element method with the NX Siemens software package. Based on assumed mathematical models, the actual areas of safe loads in the presence of cuts and values of destructive loads depending on the depth and shape of a cut taking into account the initial curvature of the bone as well as the criteria of a required residual strength in variation of influencing parameters were identified by means of calculations.</p></sec><sec><title>Results</title><p>Results. It was established that an increase in bone curvature results in the reduction of longitudinal destructive loads and in increasing values of the normal strength. The 0.05 bone curvature combined with the 0.5 cut causes a decrease in the ultimate load by 20 times (up to 4.8 % for a rectangular cut and to 5.4 % for a triangular cut). A 0.5-deep cut in the bone which curvature is 0.05 enhances the normal stress by 6.9 times for a triangular cut and by 7.8 times for a rectangular one as compared to a bone without curvature. The critical values for the curvature and depth of the cut were established which permit to avoid additional bone reinforcement.</p></sec><sec><title>Conclusion</title><p>Conclusion. The strength of the radius with a maginal defect depends not only on the depth of a cut but on its location, shape and on the radius curvature</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>кожно-костный лучевой лоскут</kwd><kwd>дефект лучевой кости</kwd><kwd>прочность лучевой кости</kwd><kwd>эксперимент</kwd><kwd>расчет</kwd><kwd>компьютерное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>osteocutaneous radial flap</kwd><kwd>radial bone defect</kwd><kwd>radial bone strength</kwd><kwd>experiment</kwd><kwd>calculation</kwd><kwd>computer simulation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Outcomes after free tissue transfer for composite oral cavity resections involving skin / S.A. Alvi, C.S. Hamill, J.P. Lepse, M. Ayala, D.A. Girod, T.T. Tsue, Y. Shnayder, K. Kakarala // Head Neck. 2018. Vol. 40, No 5. P. 973-984. 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