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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="review-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">17859</article-id><article-id pub-id-type="doi">10.17816/2311-2905-17859</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Обзоры</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Reviews</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Reverse hip replacement system: addressing instability concerns or introducing new risks? A scoping review</article-title><trans-title-group xml:lang="ru"><trans-title>Реверсивная модель эндопротеза тазобедренного сустава: решение проблемы нестабильности или новые риски? Аналитический обзор литературы</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/0000-0002-0710-6487</contrib-id><name-alternatives><name xml:lang="en"><surname>Khalifa</surname><given-names>Ahmed A.</given-names></name><name xml:lang="ru"><surname>Халифа</surname><given-names>Ахмед А.</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="EG">Egypt</country></address><bio xml:lang="en"><p>MD, FRCS, MSc, Assistant Professor, Qena faculty of medicine and University Hospital</p></bio><bio xml:lang="ru"><p>доцент, Qena faculty of medicine and University Hospital</p></bio><email>ahmed_adel0391@med.svu.edu.eg</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">South Valley University</institution></aff><aff><institution xml:lang="ru">South Valley University</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff id="aff2"><institution>Aster Sanad Hospital</institution></aff><pub-date date-type="preprint" iso-8601-date="2026-05-12" publication-format="electronic"><day>12</day><month>05</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-06-18" publication-format="electronic"><day>18</day><month>06</month><year>2026</year></pub-date><volume>32</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>149</fpage><lpage>156</lpage><history><date date-type="received" iso-8601-date="2026-03-17"><day>17</day><month>03</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-04-23"><day>23</day><month>04</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2026, Eco-Vector</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><copyright-holder xml:lang="zh">Eco-Vector</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/17859">https://journal.rniito.org/jour/article/view/17859</self-uri><abstract xml:lang="en"><p><bold>Background. </bold>To address instability after total hip arthroplasty (THA), a Reverse Hip Replacement System (RHRS) has been proposed, inspired by the concept of reverse total shoulder arthroplasty.</p> <p><bold>The aim of the</bold> <bold>review </bold>— to gather reported results, explore early outcomes, and identify potential challenges of the reverse hip replacement system.</p> <p><bold>Methods. </bold>A systematic search in PubMed and Scopus databases was performed in March 2025 using predetermined search terms, which revealed an initial 656 results. Only four studies were eligible for inclusion: one biomechanical study and three clinical studies (one case series and two case reports).</p> <p><bold>Results. </bold>The three clinical studies included 24 patients aged 60 to 79 years; 13 (54.2%) were male, and all were diagnosed with advanced hip osteoarthritis. After follow-up ranging from 3 weeks to 24 months, all patients were satisfied with the results, except for 2 (8.3%). Detailed function and PROMs outcomes for 22 patients at 24 months of follow-up showed significant improvement in WOMAC, HHS, OHS, HOOS, SF-36 physical component summary (PCS), and ED-5D (p &lt; 0.05). However, there was a nonsignificant change in the SF-36 mental component summary (MCS) (p = 0.272). Radiological outcomes, as determined by RSA analysis, at 24 months for 18 acetabular cups showed a mean migration of 0.087±0.152 mm. The overall complication rate was 29.2% 7 (cases): one intraoperative calcar crack, one deep periprosthetic joint infection, one postoperative traumatic dislocation, one femoral neuropraxia, one occasional pain, and two recalcitrant iliotibial band syndrome. The biomechanical study results showed lower polyethylene wear debris equivalent to other systems, no wear debris due to metal-on-metal contact, and no signs of polyethylene edge or backside wear.</p> <p><bold>Conclusion.</bold> Besides the promising biomechanical results, early functional and radiological outcomes of the reverse hip replacement system are encouraging; however, the incidence of complications is considerably high. Moreover, the results should be interpreted cautiously owing to the small number of included patients and the short follow-up period.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность. </bold>Для решения проблемы нестабильности после тотального эндопротезирования тазобедренного сустава была предложена реверсивная модель имплантата, в основе которой лежит принцип реверсивного эндопротезирования плечевого сустава.</p> <p><bold>Цель обзора</bold> — систематизировать имеющиеся данные о результатах, оценить ранние клинические исходы и выявить потенциальные трудности применения реверсивного эндопротезирования тазобедренного сустава.</p> <p><bold>Материал и методы.</bold> В марте 2025 г. был проведен систематический поиск в базах данных PubMed и Scopus с использованием заранее определенных поисковых терминов. Первоначальный поиск выявил 656 публикаций, однако для включения в обзор были отобраны только четыре исследования: одно биомеханическое и три клинических (одна серия наблюдений и два описания клинических случаев).</p> <p><bold>Результаты.</bold> В трех клинических исследованиях участвовали 24 пациента в возрасте от 60 до 79 лет; 13 (54,2%) были мужского пола. У всех пациентов был диагностирован прогрессирующий остеоартрит тазобедренного сустава. Длительность послеоперационного наблюдения составила от 3 нед. до 24 мес. Все пациенты, за исключением двух (8,3%), были удовлетворены результатами лечениями. Детальная оценка функциональных исходов и показателей субъективных шкал у 22 пациентов при сроке наблюдения 24 мес. выявила статистически значимое улучшение по шкалам WOMAC, HHS, OHS, HOOS, показателю физического компонента здоровья шкалы SF-36 (Physical Component Summary, PCS) и опроснику EQ-5D. В то же время динамика показателя психологического компонента здоровья шкалы SF-36 (Mental Component Summary, MCS) не достигла статистической значимости (<italic>p</italic> = 0,272). По результатам радиостереометрического анализа 18 вертлужных впадин средняя величина миграции на сроке наблюдения 24 мес. составила 0,087±0,152 мм. Частота осложнений составила 29,2% (7 случаев): интраоперационная трещина калькара (<italic>n</italic> = 1), глубокая перипротезная инфекция (<italic>n</italic> = 1), послеоперационный вывих вследствие травмы (<italic>n</italic> = 1), невропатия бедренного нерва (<italic>n</italic> = 1), эпизодическая боль (<italic>n</italic> = 1) и рецидивирующий синдром подвздошно-большеберцового тракта (<italic>n</italic> = 2). Результаты биомеханического исследования показали сниженное по сравнению с другими моделями имплантатов количество частиц износа полиэтилена, отсутствие продуктов износа пары трения металл − металл и признаков краевого или тыльного износа полиэтиленового вкладыша.</p> <p><bold>Заключение.</bold> Реверсивная модель эндопротеза тазобедренного сустава показала многообещающие ранние функциональные и рентгенологические результаты, наряду с обнадеживающими биомеханическими данными, однако частота осложнений остается довольно высокой. Кроме того, к полученным результатам следует относиться с осторожностью ввиду небольшого числа включенных пациентов и малой продолжительности периода наблюдения.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>reverse total hip arthroplasty</kwd><kwd>reverse hip replacement system</kwd><kwd>instability</kwd><kwd>dislocation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>реверсивное эндопротезирование тазобедренного сустава</kwd><kwd>реверсивная модель эндопротеза тазобедренного сустава</kwd><kwd>нестабильность</kwd><kwd>вывих</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Fontalis A., Epinette J.A., Thaler M., Zagra L., Khanduja V., Haddad F.S. Advances and innovations in total hip arthroplasty. SICOT J. 2021;7:26. doi: 10.1051/sicotj/2021025.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Li Z. 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