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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="obituary" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">N.N. Priorov Journal of Traumatology and Orthopedics</journal-id><journal-title-group><journal-title xml:lang="en">N.N. Priorov Journal of Traumatology and Orthopedics</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник травматологии и ортопедии им. Н.Н. Приорова</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-8678</issn><issn publication-format="electronic">2658-6738</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">690222</article-id><article-id pub-id-type="doi">10.17816/vto690222</article-id><article-id pub-id-type="edn">LKZCDW</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Obituary</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Некрологи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Personal</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Edgar R. Mattis (22.03.1941 — 04.09.2025)</article-title><trans-title-group xml:lang="ru"><trans-title>Эдгар Робертович Маттис (22.03.1941 — 04.09.2025)</trans-title></trans-title-group></title-group><pub-date date-type="preprint" iso-8601-date="2025-09-13" publication-format="electronic"><day>13</day><month>09</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-10-05" publication-format="electronic"><day>05</day><month>10</month><year>2025</year></pub-date><volume>32</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>736</fpage><lpage>737</lpage><history><date date-type="received" iso-8601-date="2025-09-08"><day>08</day><month>09</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-08"><day>08</day><month>09</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-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/" start_date="2026-10-05"/><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://journals.eco-vector.com/0869-8678/article/view/690222">https://journals.eco-vector.com/0869-8678/article/view/690222</self-uri><abstract xml:lang="en"><p>Edgar R. Mattis, doctor of sciences in medicine, passed away on september 4, 2025, at the age of 84. Dr. Mattis headed the patent group at the N.N. Priorov National Medical Research Center of Traumatology and Orthopedics for many years, making significant contributions to the scientific and technical development of these fields. His colleagues and students are devastated by this irreparable loss.</p></abstract><trans-abstract xml:lang="ru"><p>4 сентября 2025 года в возрасте 84 лет скончался доктор медицинских наук Эдгар Робертович Маттис. Много лет он руководил патентной группой ЦИТО, внёс значительный вклад в научно-техническое развитие травматологии и ортопедии. Коллеги и ученики скорбят о невосполнимой утрате.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Edgar R. Mattis</kwd><kwd>obituary</kwd><kwd>traumatology and orthopedics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Эдгар Робертович Маттис</kwd><kwd>некролог</kwd><kwd>травматология и ортопедия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list/></back></article>
