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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">Russian Journal of Pediatric Surgery, Anesthesia and Intensive Care</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Pediatric Surgery, Anesthesia and Intensive Care</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский вестник детской хирургии, анестезиологии и реаниматологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2219-4061</issn><issn publication-format="electronic">2587-6554</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1918</article-id><article-id pub-id-type="doi">10.17816/psaic1918</article-id><article-id pub-id-type="edn">EYMFDS</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Experimental study of the biocompatibility, corrosion behavior, and reparative properties of novel bioabsorbable Mg–Ca–Zn alloy screws with different coating thicknesses</article-title><trans-title-group xml:lang="ru"><trans-title>Экспериментальное исследование биосовместимых, коррозионных, репаративных свойств новых биорезорбируемых винтов на основе сплава Mg-Ca-Zn с разной толщиной покрытия</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>基于不同涂层厚度Mg-Ca-Zn合金的新型可生物吸收螺钉的生物相容性、耐腐蚀性及修复性能的实验研究</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-0129-1244</contrib-id><contrib-id contrib-id-type="spin">2453-9105</contrib-id><name-alternatives><name xml:lang="en"><surname>Chernyii</surname><given-names>Stepan P.</given-names></name><name xml:lang="ru"><surname>Черный</surname><given-names>Степан Петрович</given-names></name><name xml:lang="zh"><surname>Chernyii</surname><given-names>Stepan P.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>stechernyy@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3157-4579</contrib-id><contrib-id contrib-id-type="spin">5368-0964</contrib-id><name-alternatives><name xml:lang="en"><surname>Gordienko</surname><given-names>Ivan I.</given-names></name><name xml:lang="ru"><surname>Гордиенко</surname><given-names>Иван Иванович</given-names></name><name xml:lang="zh"><surname>Gordienko</surname><given-names>Ivan I.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Medicine), Assistant Professor</p></bio><email>ivan-gordienko@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4615-5270</contrib-id><contrib-id contrib-id-type="spin">7116-2901</contrib-id><name-alternatives><name xml:lang="en"><surname>Marchenko</surname><given-names>Ekaterina S.</given-names></name><name xml:lang="ru"><surname>Марченко</surname><given-names>Екатерина Сергеевна</given-names></name><name xml:lang="zh"><surname>Marchenko</surname><given-names>Ekaterina S.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Physics and Mathematics), Assistant Professor</p></bio><bio xml:lang="ru"><p>д-р физ.-мат. наук, доцент</p></bio><bio xml:lang="zh"><p>Dr. Sci. (Physics and Mathematics), Assistant Professor</p></bio><email>89138641814@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9050-3629</contrib-id><contrib-id contrib-id-type="spin">7466-8731</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsap</surname><given-names>Natalya A.</given-names></name><name xml:lang="ru"><surname>Цап</surname><given-names>Наталья Александровна</given-names></name><name xml:lang="zh"><surname>Tsap</surname><given-names>Natalya A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><email>tsapna-ekat@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7387-5287</contrib-id><contrib-id contrib-id-type="spin">6283-9404</contrib-id><name-alternatives><name xml:lang="en"><surname>Valamina</surname><given-names>Irene E.</given-names></name><name xml:lang="ru"><surname>Валамина</surname><given-names>Ирина Евгеньевна</given-names></name><name xml:lang="zh"><surname>Valamina</surname><given-names>Irene E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Assistant Professor</p></bio><bio xml:lang="ru"><p>канд. мед. наук, доцент</p></bio><bio xml:lang="zh"><p>MD, Cand. Sci. (Medicine), Assistant Professor</p></bio><email>ivalamina@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koznova</surname><given-names>Anastasiya E.</given-names></name><name xml:lang="ru"><surname>Кознова</surname><given-names>Анастасия Евгеньевна</given-names></name><name xml:lang="zh"><surname>Koznova</surname><given-names>Anastasiya E.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aisha12_95@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ural State Medical University</institution></aff><aff><institution xml:lang="ru">Уральский государственный медицинский университет</institution></aff><aff><institution xml:lang="zh">Ural State Medical University</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National Research Tomsk State University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Томский государственный университет</institution></aff><aff><institution xml:lang="zh">National Research Tomsk State University</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>491</fpage><lpage>502</lpage><history><date date-type="received" iso-8601-date="2025-04-09"><day>09</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-12-01"><day>01</day><month>12</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><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://eco-vector.com/for_authors.php#07</ali:license_ref></license></permissions><self-uri xlink:href="https://rps-journal.ru/jour/article/view/1918">https://rps-journal.ru/jour/article/view/1918</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Restoration of bone tissue damaged as a result of trauma remains a relevant challenge in modern medicine. Displaced fractures in childhood are often treated by osteosynthesis, which requires a second surgical procedure to remove fixation implants, thereby increasing operative risks. Biodegradable magnesium-based screws represent a promising solution, as they resorb <italic>in vivo</italic> and, according to available data, exhibit osteoinductive properties.</p> <p><bold>AIM:</bold> To determine and evaluate the optimal biocompatibility, corrosion resistance, and reparative properties of bioresorbable Mg-Ca-Zn alloy screws <italic>in vivo</italic> and <italic>in vitro</italic> using an experimental intra-articular fracture model.</p> <p><bold>METHODS:</bold> To assess reparative, bioresorptive, and biocompatible properties, bioresorbable headless cannulated compression screws with different coating thicknesses (15, 25, 35, 45, and 55 μm), a cylindrical thread diameter of 3.5 mm, and a length of 20.0 mm were implanted into the posteromedial surface of the proximal third of the tibia in Soviet Chinchilla rabbits. Animals were euthanized 2 months after experiment, followed by instrumental and histological examinations. Implant biodegradation was assessed <italic>in vivo</italic> by the presence of gas formation in bone tissue, whereas biocompatibility and the reparative bone response were evaluated based on peri-implant bone density and histological findings.</p> <p><bold>RESULTS:</bold> All coated Mg–Ca–Zn screw samples demonstrated optimal biocompatibility and a favorable reparative bone response.</p> <p><bold>CONCLUSION:</bold> Experimental <italic>in vivo</italic> evaluation of Mg-Ca-Zn bioresorbable screws in bone tissue showed that the implants undergo biodegradation and exhibit good biocompatibility and reparative response, indicating their fundamental feasibility for use in traumatology practice.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> В настоящее время актуальной проблемой в медицине остается восстановление костной ткани, поврежденной в результате травм. Переломы со смещением в детском возрасте часто подлежат лечению остеосинтезом, требующим повторного оперативного вмешательства для удаления фиксирующих имплантатов, что связано с дополнительными оперативными рисками. Биодеградируемые магниевые винты представляют собой перспективное решение, так как они рассасываются в организме и, по данным исследований, обладают остеиндуктивным эффектом.</p> <p><bold>Цель.</bold> Определение и оценка оптимальных биосовместимых, коррозионных, репаративных свойств биорезорбируемых винтов на основе сплава Mg-Ca-Zn <italic>in vivo</italic> и <italic>in vitro</italic> на экспериментальной модели внутрисуставного перелома.</p> <p><bold>Методы.</bold> Для определения репаративных, биорезорбтивных и биосовместимых свойств имплантата кроликам линии советская шиншилла в заднемедиальную поверхность верхней трети большеберцовой кости имплантировали биорезорбируемый безшляпочный канюлированный компрессирующий винт с разной толщиной покрытия (15, 25, 35, 45, 55 мкм) с диаметром цилиндрической резьбы 3,5 мм, длиной 20,0 мм. Через 2 мес. животных выводили из эксперимента, проводили инструментальные, гистологические исследования. Биодеградацию имплантатов оценивали по наличию газа в костной ткани <italic>in vivo</italic>, а биосовместимость и репаративный ответ костной ткани — по ее периимплантантной плотности, результатам гистологического исследования.</p> <p><bold>Результаты.</bold> Все образцы винтов на основе Mg-Ca-Zn с покрытием демонстрируют оптимальную биосовместимость и репаративный ответ костной ткани.</p> <p><bold>Заключение.</bold> Результаты экспериментальной оценки биорезорбируемых винтов Mg-Ca-Zn в костной ткани <italic>in vivo</italic> показали, что образцы подвергаются биодеградации и демонстрируют хороший репаративный ответ и биосовместимость, что показывает их принципиальную возможность применения в травматологической практике.</p></trans-abstract><trans-abstract xml:lang="zh"><p><bold>论证。</bold>目前，创伤后骨组织修复仍是医学领域的重要问题。儿童移位性骨折常需采用骨接合术治疗，而传统金属内固定植入物通常需要再次手术取出，从而增加额外的手术风险。可生物降解镁合金螺钉由于可在体内逐渐吸收，且已有研究表明其具有成骨诱导作用，被认为是一种具有前景的替代方案。</p> <p><bold>目的。</bold>在in vivo和in vitro条件下，基于关节内骨折实验模型，确定并评估不同涂层厚度Mg-Ca-Zn合金可生物吸收螺钉的生物相容性、耐腐蚀性及修复性能。</p> <p><bold>方法。</bold>为评估植入物的修复性能、生物吸收特性及生物相容性，将不同涂层厚度（15、25、35、45、 55 μm）的无头空心加压螺钉（圆柱形螺纹直径3.5 mm，长度20.0 mm）植入苏联钦奇拉兔（Soviet Chinchilla）胫骨上段后内侧区域。实验开始后2个月处死动物，进行影像学及组织学检查。通过in vivo骨组织中气体形成情况评估植入物的生物降解过程；通过围植入区骨密度变化及组织学检查结果评价骨组织的生物相容性和修复反应。</p> <p><bold>结果。</bold>所有具有涂层的Mg-Ca-Zn合金螺钉样本均表现出良好的生物相容性及理想的骨修复反应。</p> <p><bold>结论。</bold>对Mg-Ca-Zn可生物吸收螺钉在in vivo骨组织中的实验评估结果表明，该类植入物可发生生物降解，并表现出良好的修复反应和生物相容性，提示其在创伤骨科实践中具有原则上的应用可能性。</p></trans-abstract><kwd-group xml:lang="en"><kwd>magnesium</kwd><kwd>experimental animals</kwd><kwd>biodegradable implants</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>магний</kwd><kwd>экспериментальные животные</kwd><kwd>биодеградирумые имплантаты</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>镁</kwd><kwd>实验动物</kwd><kwd>可生物降解植入物</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Правительство Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Government of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="zh">Government of the Russian Federation</institution></institution-wrap></funding-source><award-id>122120100038-6</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lavrishcheva GI, Mikhailova LN, Cherkeszade DI, Onoprienko GA. 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