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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">vmireaviz</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник медицинского института «РЕАВИЗ». Реабилитация, Врач и Здоровье</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of the Medical Institute "REAVIZ" (REHABILITATION, DOCTOR AND HEALTH)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-762X</issn><issn pub-type="epub">2782-1579</issn><publisher><publisher-name>РЕАВИЗ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20340/vmi-rvz.2025.4.CASE.2</article-id><article-id custom-type="elpub" pub-id-type="custom">vmireaviz-1276</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>Клинический случай</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Clinical case</subject></subj-group></article-categories><title-group><article-title>Результаты ревизионного эндопротезирования коленного сустава у пациента с мальпозицией компонентов эндопротеза (клинический случай)</article-title><trans-title-group xml:lang="en"><trans-title>Results of revision knee arthroplasty in a patient with malposition of implant components (clinical case)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9241-4539</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ефимов</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Efimov</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ефимов Дмитрий Николаевич, Канд. мед. наук, врач травматолог-ортопед, заведующий операционным блоком Вклад автора: концепция и дизайн исследования, сбор и обработка материала, анализ литературы, редактирование текста статьи.</p><p>ул. Федора Гладкова, д. 33, г. Чебоксары, 428020</p></bio><bio xml:lang="en"><p>Dmitriy N. Efimov, Cand. Sci. (Med.), traumatologist-orthopedist, head of the operating unit Author contributions: study concept and design, data collection and processing, literature review, and editing.</p><p>Fyodor Gladkov St., 33, Cheboksary, 428020</p></bio><email xlink:type="simple">defimov84@gmail.com</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>Николаев</surname><given-names>Н. C.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikolaev</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николаев Николай Станиславович, Д-р мед. наук, профессор РАН, Главный врач Вклад автора: концепция и дизайн исследования, сбор и обработка материала, анализ литературы, редактирование текста статьи.</p><p>ул. Федора Гладкова, д. 33, г. Чебоксары, 428020</p></bio><bio xml:lang="en"><p>Nikolay S. Nikolaev, Dr. Sci. (Med.), Professor of the Russian Academy of Sciences, Chief Physician Author's contributions: study concept and design, data collection and processing, literature review, and editing.</p><p>Fyodor Gladkov St., 33, Cheboksary, 428020</p></bio><email xlink:type="simple">nikolaevns@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный центр травматологии, ортопедии и эндопротезирования</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Center for Traumatology, Orthopedics, and Endoprosthetics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><fpage>164</fpage><lpage>169</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ефимов Д.Н., Николаев Н.C., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ефимов Д.Н., Николаев Н.C.</copyright-holder><copyright-holder xml:lang="en">Efimov D.N., Nikolaev N.S.</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://vestnik.reaviz.ru/jour/article/view/1276">https://vestnik.reaviz.ru/jour/article/view/1276</self-uri><abstract><p>Эндопротезирование в настоящий момент является наиболее эффективным методом лечения терминальных стадий гонартроза коленного сустава, однако изменения в кинематике коленного сустава после операции иногда приводят к плохим клиническим результатам. Приведены результаты лечения пациентки А., 59 лет, с диагнозом «правосторонний идиопатический гонартроз 3 стадии, болевой синдром, варусная деформация правой нижней конечности», которой выполнено эндопротезирование правого коленного сустава. В течение двух лет после проведённой операции пациентку беспокоили боли в переднем отделе коленного сустава. Пациентке диагностирован синдром мальпозиции компонентов эндопротеза. Выполнено ревизионное эндопротезирование с заменой компонентов эндопротеза и восстановлением суставной линии. Достигнут хороший функциональный результат. Восстановление суставной линии при эндопротезировании является важнейшей частью нормальной биомеханики коленного сустава. Корректное положение суставной линии определено при помощи коэффициента дистализации суставной линии.</p></abstract><trans-abstract xml:lang="en"><p>Endoprosthetics is currently the most effective treatment for terminal stages of knee gonarthritis. However, changes in knee kinematics after surgery sometimes lead to poor clinical outcomes. This article presents the treatment outcomes for patient A., 59, diagnosed with stage 3 right-sided idiopathic gonarthritis, pain syndrome, and varus deformity of the right lower extremity. She underwent right knee arthroplasty. For two years after surgery, the patient experienced pain in the anterior knee joint. She was diagnosed with malposition of the endoprosthesis components. Revision arthroplasty was performed with replacement of the endoprosthesis components and restoration of the joint line. A good functional outcome was achieved. Restoration of the joint line during endoprosthetics is a crucial part of normal knee biomechanics. The correct position of the joint line is determined using the joint line distalization coefficient.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эндопротезирование коленного сустава [D019645]</kwd><kwd>ревизионное эндопротезирование [D019919]</kwd><kwd>гонартроз [D020370]</kwd><kwd>биомеханика коленного сустава [D001696]</kwd><kwd>варусная деформация [D017746]</kwd><kwd>клинический случай [D002363]</kwd><kwd>осложнения эндопротезирования [D019919]</kwd><kwd>функциональные результаты [D016896]</kwd><kwd>кинематика коленного сустава [D001696]</kwd><kwd>болевой синдром [D010146]</kwd></kwd-group><kwd-group xml:lang="en"><kwd>knee joint arthroplasty [D019645]</kwd><kwd>revision arthroplasty [D019919]</kwd><kwd>gonarthrosis [D020370]</kwd><kwd>knee biomechanics [D001696]</kwd><kwd>varus deformity [D017746]</kwd><kwd>case report [D002363]</kwd><kwd>arthroplasty complications [D019919]</kwd><kwd>functional outcomes [D016896]</kwd><kwd>knee kinematics [D001696]</kwd><kwd>pain syndrome [D010146]</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">De Carvalho RT, Santos DB Neto, Chammas V, Arrebola LS, Colombo ML, Scalizi C Junior. 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