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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="research-article" 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">17749</article-id><article-id pub-id-type="doi">10.17816/2311-2905-17749</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Osseointegrated exoprosthesis system: a pilot preclinical study</article-title><trans-title-group xml:lang="ru"><trans-title>Остеоинтегративная система экзопротезирования: пилотное доклиническое исследование</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2619-3691</contrib-id><contrib-id contrib-id-type="spin">7170-6994</contrib-id><name-alternatives><name xml:lang="en"><surname>Sinegub</surname><given-names>Andrey V.</given-names></name><name xml:lang="ru"><surname>Синегуб</surname><given-names>Андрей Владимирович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Tech.)</p></bio><bio xml:lang="ru"><p>канд. техн. наук</p></bio><email>a.sinegub@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-6030-6460</contrib-id><contrib-id contrib-id-type="spin">5007-7607</contrib-id><name-alternatives><name xml:lang="en"><surname>Chupryaev</surname><given-names>Victor A.</given-names></name><name xml:lang="ru"><surname>Чупряев</surname><given-names>Виктор Андреевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>v.chupryaev@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5437-1163</contrib-id><contrib-id contrib-id-type="spin">7549-2959</contrib-id><name-alternatives><name xml:lang="en"><surname>Demchenko</surname><given-names>Konstantin N.</given-names></name><name xml:lang="ru"><surname>Демченко</surname><given-names>Константин Николаевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>phantom964@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4773-1663</contrib-id><contrib-id contrib-id-type="spin">5569-4092</contrib-id><name-alternatives><name xml:lang="en"><surname>Voronin</surname><given-names>Stepan E.</given-names></name><name xml:lang="ru"><surname>Воронин</surname><given-names>Степан Евгеньевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>voronin_se@almazovcentre.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-8555-4046</contrib-id><name-alternatives><name xml:lang="en"><surname>Eidelman</surname><given-names>Konstantin V.</given-names></name><name xml:lang="ru"><surname>Эйдельман</surname><given-names>Константин Валерьевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>eidelmankv@niuitmo.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">NewStep LLP</institution></aff><aff><institution xml:lang="ru">ООО «НьюСтеп»</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Kirov Military Medical Academy</institution></aff><aff><institution xml:lang="ru">ФГБВОУ ВО «Военно-медицинская академия им. С.М. Кирова» Минобороны России</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Almazov National Medical Research Center</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр им. В.А. Алмазова» Минздрава России</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-09" publication-format="electronic"><day>09</day><month>12</month><year>2025</year></pub-date><volume>31</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>143</fpage><lpage>151</lpage><history><date date-type="received" iso-8601-date="2025-08-15"><day>15</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-05"><day>05</day><month>11</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025,</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journal.rniito.org/jour/article/view/17749">https://journal.rniito.org/jour/article/view/17749</self-uri><abstract xml:lang="en"><p><bold>Background.</bold> Traditional socket prostheses suffer from several limitations, including skin complications, unstable fixation, and restricted patient mobility. Osseointegrated exoprostheses represent a promising alternative as they attach to the human body via an implant surgically placed in the residual bone. This solution provides secure fixation and is particularly effective for patients with short or pathological residual limbs.</p> <p><bold>The aim of the study </bold>— to evaluate the biocompatibility and safety of a domestically developed osseointegration system for femoral exoprosthetics using a large animal model.</p> <p><bold>Methods. </bold>A customized titanium osseointegrated implant, adapted based on CT data, was placed in one sexually mature minipig using a two-stage surgical protocol. During the 3-month observation period, a comprehensive set of clinical, laboratory, and radiographic examinations was performed. The study also involved routine stoma care and bacteriological monitoring. At the end of the period, an implant pull-out test was conducted.</p> <p><bold>Results. </bold>The animal was able to endure weight-bearing on the prosthesis while standing and walking. Body weight increased by approximately 10 kg. The implant pull-out force was 400 N, indicating the formation of a mechanical bond with the bone. Manageable complications were noted during the observation, specifically the development of anemia and asymptomatic bacterial colonization of the stoma with <italic>Staphylococcus</italic> spp. at 10<sup>7</sup> CFU/ml. There were no clinical signs of infection or systemic inflammatory response.</p> <p><bold>Conclusion.</bold> The study demonstrated the feasibility of the successful and safe application of the evaluated osseointegration system in a large animal model. The observed complications were not critical. The findings confirm the biocompatibility and functionality of the system, justifying the need for further expansive preclinical studies.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность. </bold>Традиционные протезы с культеприемной гильзой имеют ряд недостатков, включая кожные осложнения, нестабильную фиксацию и ограничение подвижности пациентов. Перспективной альтернативой являются остеоинтегративные экзопротезы, которые крепятся к телу человека через имплантат, хирургически установленный в остаточную кость культи. Это решение обеспечивает надежную фиксацию и особенно эффективно для пациентов с короткими или патологическими культями.</p> <p><bold>Цель исследования<italic> </italic></bold>— оценить биосовместимость и безопасность применения отечественной остеоинтегративной системы для экзопротезирования бедра на крупной животной модели.</p> <p><bold>Материал и методы.</bold> Одной половозрелой свинье-минипигу в два этапа был имплантирован титановый остеоинтегрируемый имплантат, адаптированный по данным КТ. В течение 3 мес. наблюдения проводили комплекс клинических, лабораторных и рентгенологических исследований, осуществляли уход и бактериологический контроль состояния стомы, по завершении — пулл-аут тест имплантата.</p> <p><bold>Результаты.</bold> Животное опиралось на протез при стоянии и ходьбе. Масса увеличилась примерно на 10 кг. Усилие на отрыв имплантата (пулл-аут тест) составило 400 Н, что свидетельствует о формировании механической связи с костью. В ходе наблюдения отмечены управляемые осложнения: развитие анемии и бессимптомная бактериальная колонизация стомы <italic>Staphylococcus</italic> spp. 10<sup>7</sup> КОЕ/мл без клинических признаков инфекции и системной воспалительной реакции.</p> <p><bold>Заключение. </bold>Продемонстрирована возможность успешного и безопасного применения рассматриваемой остеоинтегративной системы на крупной животной модели. Обнаруженные осложнения не были критичными. Полученные данные подтверждают биосовместимость и функциональность системы, что обосновывает необходимость дальнейших, более масштабных доклинических исследований.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>percutaneous prosthetics</kwd><kwd>exoprosthetics</kwd><kwd>osseointegrated femoral implants</kwd><kwd>preclinical study</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>чрескожное протезирование</kwd><kwd>экзопротезирование</kwd><kwd>остеоинтегративный экзопротез бедра</kwd><kwd>доклиническое исследование</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Гросс Д.Д., Грюнфельд М., Розбрух С.Р., Рейф Т.Дж., Холлварт Д.С. Применение метода остеоинтеграции на нижней конечности — современное состояние и перспективы: обзор литературы. Травматология и ортопедия России. 2024;30(3):120-131. (На англ.). doi: 10.17816/2311-2905-17465. 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