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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">10.18019/1028-4427-2023-29-5-468-474</article-id><article-id custom-type="edn" pub-id-type="custom">TLSRSE</article-id><article-id custom-type="elpub" pub-id-type="custom">genort-2875</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>Анализ биомеханики проксимального межфалангового сустава после эндопротезирования</article-title><trans-title-group xml:lang="en"><trans-title>Biomechanics of the proximal interphalangeal joint after total joint replacement</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7456-6160</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Котельников</surname><given-names>Г. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kotelnikov</surname><given-names>G. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Геннадий Петрович Котельников – доктор медицинских наук, профессор, академик РАН, заведующий кафедрой</p><p>Самара</p></bio><bio xml:lang="en"><p>Gennadii P. Kotelnikov – Doctor of Medical Sciences, Professor, Academician of the Russian Academy of Sciences, Head of the Department</p><p>Samara</p></bio><email xlink:type="simple">info@samsmu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4144-7090</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колсанов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolsanov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Владимирович Колсанов – доктор медицинских наук, профессор, профессор РАН, ректор</p><p>Самара</p></bio><bio xml:lang="en"><p>Alexander V. Kolsanov – Doctor of Medical Sciences, Professor, Professor of the Russian Academy of Sciences, Rector</p><p>Samara</p></bio><email xlink:type="simple">info@samsmu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3411-4172</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Николаенко</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaenko</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Николаевич Николаенко – доктор медицинских наук, директор НИИ</p><p>Самара</p></bio><bio xml:lang="en"><p>Andrei N. Nikolaenko – Doctor of Medical Sciences, Director of the Research Institute</p><p>Samara</p></bio><email xlink:type="simple">nikolaenko.83@inbox.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>Згирский</surname><given-names>Д. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Zgirskii</surname><given-names>D. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Денис Олегович Згирский – аспирант кафедры</p><p>Самара</p></bio><bio xml:lang="en"><p>Denis O. Zgirskii – postgraduate student of the department</p><p>Samara</p></bio><email xlink:type="simple">zgi-denis@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7169-5370</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дороганов</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Doroganov</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Святослав Олегович Дороганов – аспирант кафедры</p><p>Самара</p></bio><bio xml:lang="en"><p>Sviatoslav O. Doroganov – postgraduate student of the department</p><p>Samara</p></bio><email xlink:type="simple">svdor95@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2023</year></pub-date><volume>29</volume><issue>5</issue><fpage>468</fpage><lpage>474</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Котельников Г.П., Колсанов А.В., Николаенко А.Н., Згирский Д.О., Дороганов С.О., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Котельников Г.П., Колсанов А.В., Николаенко А.Н., Згирский Д.О., Дороганов С.О.</copyright-holder><copyright-holder xml:lang="en">Kotelnikov G.P., Kolsanov A.V., Nikolaenko A.N., Zgirskii D.O., Doroganov S.O.</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/2875">https://www.ilizarov-journal.com/jour/article/view/2875</self-uri><abstract><sec><title>Введение</title><p>Введение. Современное состояние проблемы эндопротезирования мелких суставов кисти, в частности проксимального межфалангового сустава, характеризуется необходимостью создания анатомически адаптированных конструкций с использованием оптимальных материалов. Внедрение нового медицинского изделия требует его комплексного доклинического испытания.</p></sec><sec><title>Цель</title><p>Цель. Определить допустимый диапазон нагрузок на проксимальный межфаланговый сустав после эндопротезирования путём анализа его биомеханики для предупреждения развития критических состояний – осложнений.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В период с 2016 по 2021 год был разработан цельнокерамический несвязанный анатомически адаптированный эндопротез проксимального межфалангового сустава на основании комплексного подхода, включающего доклинические испытания и клиническое исследование 42 пациентов (25 мужчин, 17 женщин) с остеоартритом проксимального межфалангового сустава. При помощи 3D-моделирования создана цифровая модель эндопротеза. С использованием метода конечных элементов изучены критические состояния разработанной цифровой модели, имитирующей стереотипные движения в суставе, получены объективные результаты, которые имеют применение в клинической практике.</p></sec><sec><title>Результаты</title><p>Результаты. При нагрузке до 5 килограммов устойчивость биомеханической конструкции не нарушается при амплитуде движений от 0 до 60 градусов, при нагрузке до 20 килограммов в пределах 0-30 градусов. Кортикальная костная ткань выдерживает нагрузки до 20 килограммов при амплитуде движений от 0 до 60 градусов.</p></sec><sec><title>Обсуждение</title><p>Обсуждение. Был проведён анализ предельных нагрузок на эндопротез с учетом прочностных характеристик костной ткани и циркониевой керамики как материала. Данное исследование задало вектор для разработки в дальнейшем оптимального режима двигательной активности в раннем послеоперационном периоде и наметило оптимальный диапазон движений после эндопротезирования ПМФС.</p></sec><sec><title>Заключение</title><p>Заключение. Прилагаемая нагрузка в раннем послеоперационном периоде до 5 кг является оптимальной для пациента, при этом диапазон сгибания не должен превышать 90°. Использование нагрузки в диапазоне от 5 до 20 кг возможно, но без превышения угла сгибания в проксимальном межфаланговом суставе более 30°. При заданной нагрузке в 20 кг при угле сгибания более 30° вероятен вывих компонентов эндопротеза, при угле сгибания более 60° крайне вероятно возникновение перипротезного перелома.</p></sec></abstract><trans-abstract xml:lang="en"><p>Introduction Small joints arthroplasty of the hand including the proximal interphalangeal joint (PIPJ) is associated with the need to create anatomically adapted structures using optimal materials. Introduction of a new medical device requires comprehensive preclinical testing.</p><p>The objective was to determine a range of loads allowed for the proximal interphalangeal joint after arthroplasty through analyzing the biomechanics to prevent critical conditions and complications.</p><p>Methods A full-ceramic non-constrained anatomically adapted proximal interphalangeal joint implant was developed between 2016 and 2021 using an integrated approach with preclinical trials and a clinical study of 42 patients (25 males, 17 females) with PIPJ arthritis. A digital endoprosthesis was created with 3D-modelling. Critical conditions for the digital model imitating typical joint movements were explored with the use of finite element method and the findings to be employed in clinical practice.</p><p>Results A stable biomechanical construct was intact with loads of 5 kilograms and a motion ranging from 0 to 60 degrees, with loads of 20 kilograms and a motion ranging between 0 and 30 degrees. Cortical bone could sustain loads up to 20 kilograms with a motion ranging between 0 and 60 degrees. Discussion Load capacity of the implant was explored considering the strength of bone tissue and zirconium ceramics as a material. The study set a vector for the development of the optimal mode of motor activity early after surgery and indicated the optimal range of motion to be applied after PIPJ arthroplasty.</p><p>Conclusion The load up to 5 kg was optimal for the patient to be applied early after surgery with the range of flexion measuring less that 90°. The patient could use a load of 5 to 20 kg with flexion in the proximal interphalangeal joint measuring less than 30°. Endoprosthetic components were likely to get dislocated with a load of 20 kg and flexion angle of greater than 30°. Periprosthetic fracture could occur with flexion angle of greater than 60°.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эндопротезирование проксимального межфалангового сустава</kwd><kwd>метод конечных элементов</kwd><kwd>эндопротезирование суставов кисти</kwd><kwd>цифровое моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>proximal interphalangeal joint replacement</kwd><kwd>finite element method</kwd><kwd>joints arthroplasty of the hand</kwd><kwd>digital modelling</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">Yamamoto M, Malay S, Fujihara Y, et al. A Systematic Review of Different Implants and Approaches for Proximal Interphalangeal Joint Arthroplasty. Plast Reconstr Surg. 2017;139(5):1139e-1151e. doi: 10.1097/PRS.0000000000003260</mixed-citation><mixed-citation xml:lang="en">Yamamoto M, Malay S, Fujihara Y, et al. 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