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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Traumatology and Orthopedics of Russia</journal-id><journal-title-group><journal-title xml:lang="en">Traumatology and Orthopedics of Russia</journal-title><trans-title-group xml:lang="ru"><trans-title>Травматология и ортопедия России</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2311-2905</issn><issn publication-format="electronic">2542-0933</issn><publisher><publisher-name xml:lang="en">Vreden National Medical Research Center of Traumatology and Orthopedics</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1482</article-id><article-id pub-id-type="doi">10.21823/2311-2905-2020-26-2-98-108</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theoretical and experimental studies</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теоретические и экспериментальные исследования</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Theoretical and experimental studies</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Osseointegration of Titanium and Steel Additive Manufactured Implant in Rabbit Tibia under External Fixation: Comparative Study</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительное исследование остеоинтеграции изготовленных с применением аддитивных технологий титановых и стальных имплантатов в большеберцовой кости кролика в условиях внешней фиксации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Emanov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Еманов</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Andrey A. Emanov</bold> — Cand. Sci. (Vet.), Leading Researcher</p><p>Kurgan</p></bio><bio xml:lang="ru"><p><bold>Еманов Андрей Александрович</bold> — канд. вет. наук, ведущий научный сотрудник</p><p>г. Курган</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kuznetsov</surname><given-names>V. P.</given-names></name><name xml:lang="ru"><surname>Кузнецов</surname><given-names>В. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Viktor P. Kuznetsov</bold> — Dr. Sci. (Tech.), Head of laboratory; Professor, Department of Heat Treatment and Metal Physics</p><p>Ekaterinburg</p></bio><bio xml:lang="ru"><p><bold>Кузнецов Виктор Павлович</bold> — д-р. техн. наук, заведующий лабораторией; профессор кафедры термообработки и физики металлов</p><p>г. Екатеринбург</p></bio><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gorbach</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Горбач</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Elena N. Gorbach</bold> — Cand. Sci. (Biol.), Leading Researcher</p><p>Kurgan</p></bio><bio xml:lang="ru"><p><bold>Горбач Елена Николаевна</bold> — канд. биол. наук, ведущий научный сотрудник</p><p>г. Курган</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Stogov</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Стогов</surname><given-names>М. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Maksim V. Stogov</bold> — Dr. Sci. (Biol.), Associate Professor, Leading Researcher</p><p>Kurgan</p></bio><bio xml:lang="ru"><p><bold>Стогов Максим Валерьевич</bold> — д-р биол. наук, доцент, ведущий научный сотрудник</p><p>г. Курган</p></bio><email>stogo_off@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kireeva</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Киреева</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Elena A. Kireeva</bold> — Cand. Sci. (Biol.), Senior Researcher</p><p>Kurgan</p></bio><bio xml:lang="ru"><p><bold>Киреева Елена Анатольевна</bold> — канд. биол. наук, старший научный сотрудник</p><p>г. Курган</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ovchinnikov</surname><given-names>E. N.</given-names></name><name xml:lang="ru"><surname>Овчинников</surname><given-names>Е. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p><bold>Evgeny N. Ovchinnikov</bold> — Cand. Sci. (Biol.), Deputy Director for Scientific Work</p><p>Kurgan</p></bio><bio xml:lang="ru"><p><bold>Овчинников Евгений Николаевич</bold> — канд. биол. наук, заместитель директора по научной работе</p><p>г. Курган</p></bio><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ilizarov National Medical Research Centre for Traumatology and Orthopedics</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр травматологии и ортопедии им. акад. Г.А. Илизарова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Ural Federal University</institution></aff><aff><institution xml:lang="ru"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-07-09" publication-format="electronic"><day>09</day><month>07</month><year>2020</year></pub-date><volume>26</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>98</fpage><lpage>108</lpage><history><date date-type="received" iso-8601-date="2020-07-08"><day>08</day><month>07</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-07-08"><day>08</day><month>07</month><year>2020</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journal.rniito.org/jour/article/view/1482">https://journal.rniito.org/jour/article/view/1482</self-uri><abstract xml:lang="en"><p><bold>Relevance</bold>. The main goals of successful prosthesis remain ensuring the osseointegration and infectious safety of implants.</p><p><bold>The purpose of the study</bold> — the comparative analysis of osseointegration of titanium and steel additive manufactured implants in the rabbit tibia under additional fixation by Ilizarov apparatus.</p><p><bold>Materials and Methods</bold>. The study was performed on 20 chinchilla male rabbits. The animals of the first group (n = 8 ) were implanted a stainless steel product EOS PH1 (EOS, Germany), the animals of the second group (n = 12) — a titanium alloy Ti6Al4V product. The implant was additionally fixed by Ilizarov apparatus. The implants were processed with additive technology by selective laser fusion at the EOSINT M 280 installation (EOS, Germany). The survival and safety of the implants were assessed using clinical, histological, laboratory and statistical methods.</p><p><bold>Results</bold>. The implant fall due to chronic inflammation was found in 2 animals of group 1 and none in group 2. The formation of weakly mineralized bone tissue on the surface of the implant was noted in 3 weeks in all cases. The bone became more mineralized by the 12<sup>th</sup> week of the experiment. However, in group 2, the calcium content and Ca / P ratio of the newly formed bone tissue at the 3<sup>rd</sup> and 12<sup>th</sup> week after implantation were significantly higher than in the animals of group 1. This indicated the greater maturity of the bone tissue in animals of group 2 at all stages of the experiment. In group 1, the compact plate osteoporosis and calcium-phosphorus balance disturbance were greater.</p><p><bold>Conclusion</bold>. The results of the study indicate that the survival rate (osseointegration) and safety of the product made of the titanium alloy were higher compared with the stainless steel product.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность</bold>. Основными задачами успешного протезирования остаются обеспечение остеоинтеграции и инфекционной безопасности имплантатов.</p><p><bold>Цель исследования</bold> — сравнительный анализ остеоинтеграции изготовленных с применением аддитивной технологии титановых и стальных имплантатов в большеберцовой кости кролика в условиях дополнительной фиксации биомеханической системы аппаратом Илизарова.</p><p><bold>Материал и методы</bold>. Исследование выполнено на 20 кроликах-самцах породы Шиншилла. Животным первой группы (n = 8) имплантировали изделие из нержавеющей стали марки EOS PH1 (EOS, Германия), животным второй группы (n = 12) — из титанового сплава марки Ti6Al4V. Имплантат дополнительно фиксировали аппаратом Илизарова. Имплантаты были изготовлены с применением аддитивной технологии методом селективного лазерного сплавления на установке EOSINT M 280 (EOS, Германия). Оценку приживаемости и безопасности применения имплантатов проводили с помощью клинического, гистологического, лабораторного и статистического методов исследования.</p><p><bold>Результаты</bold>. У животных группы 1 было зафиксировано два случая выпадения имплантата по причине хронического воспаления, в группе 2 таких случаев отмечено не было. Во всех экспериментах через 3 нед. отмечено формирование слабоминерализованной костной ткани на поверхности имплантата, которая становилась более минерализованной к 12-й нед. эксперимента. Однако содержание кальция и соотношение Са/Р в новообразованной костной ткани в группе 2 на 3-й и 12-й нед. после имплантации было статистически значимо выше показателей животных группы 1, что свидетельствовало о большей зрелости костной ткани у животных группы 2 на всех этапах эксперимента. В группе 1 отмечали большую выраженность остеопороза компактной пластинки и более существенное нарушение кальций-фосфорного баланса.</p><p><bold>Заключение</bold>. Результаты исследования позволяют заключить, что приживаемость (остеоинтеграция) и безопасность изделия, выполненного из титанового сплава, была выше по сравнению с изделием из нержавеющей стали.</p></trans-abstract><kwd-group xml:lang="en"><kwd>additive technology</kwd><kwd>selective laser fusion</kwd><kwd>titanium implant</kwd><kwd>stainless steel implant</kwd><kwd>osseointegration</kwd><kwd>Ilizarov apparatus</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аддитивные технологии</kwd><kwd>селективное лазерное сплавление</kwd><kwd>титановый имплантат</kwd><kwd>остеоинтеграция</kwd><kwd>аппарат Илизарова</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Aschoff H.H., Juhnke D.L. 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