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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">17699</article-id><article-id pub-id-type="doi">10.17816/2311-2905-17699</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>EXPERIENCE EXCHANGE</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОБМЕН ОПЫТОМ</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Experience exchange</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">Assessment of the accuracy of pedicle screw fixation in thoracolumbar vertebrae using freehand technique in resource-limited settings: insights from a prospective analysis</article-title><trans-title-group xml:lang="ru"><trans-title>Оценка точности транспедикулярной фиксации в грудопоясничном отделе позвоночника методом «свободной руки» в условиях ограниченных ресурсов: результаты проспективного анализа</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/0009-0004-7220-2063</contrib-id><name-alternatives><name xml:lang="en"><surname>Elzyati</surname><given-names>Mohamed S.</given-names></name><name xml:lang="ru"><surname>Эльзайят</surname><given-names>Мухаммед С.</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="EG">Egypt</country></address><email>moh.samir3796@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-1289-135X</contrib-id><name-alternatives><name xml:lang="en"><surname>Youssef</surname><given-names>Magdy G.</given-names></name><name xml:lang="ru"><surname>Юссеф</surname><given-names>Магди Г.</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>Professor</p></bio><bio xml:lang="ru"><p>профессор</p></bio><email>dina.ahmed3796@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-7801-7484</contrib-id><name-alternatives><name xml:lang="en"><surname>Zaki</surname><given-names>Mina S.</given-names></name><name xml:lang="ru"><surname>Заки</surname><given-names>Мина С.</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="EG">Egypt</country></address><email>moh.elzyati@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Ain Shams University</institution></aff><aff><institution xml:lang="ru">Ain Shams University</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Ain Shams University Hospitals</institution></aff><aff><institution xml:lang="ru">Ain Shams University Hospitals</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-07-28" publication-format="electronic"><day>28</day><month>07</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-09-15" publication-format="electronic"><day>15</day><month>09</month><year>2025</year></pub-date><volume>31</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>129</fpage><lpage>138</lpage><history><date date-type="received" iso-8601-date="2025-04-01"><day>01</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-06-17"><day>17</day><month>06</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/17699">https://journal.rniito.org/jour/article/view/17699</self-uri><abstract xml:lang="en"><p><bold>Background</bold><bold>. </bold>Thoracolumbar fractures and diseases represent a significant healthcare problem. Pedicle fixation is a cornerstone in the surgical stabilization of spinal disorders, where spinal stability is crucial for maintaining proper biomechanical function and preventing neurological compromise.</p> <p><bold>The</bold><bold> aims:</bold> 1) to reassess the accuracy of freehand pedicle screw fixation in thoracolumbar vertebrae, particularly within the context of resource-limited settings where image-guidance technologies are not feasible; 2) to explore how surgical ergonomics, particularly surgeon handedness, affects screw placement accuracy.</p> <p><bold>Methods</bold><bold>.</bold> A prospective study was conducted, recruiting 90 patients with thoracolumbar lesions who underwent pedicle screw fixation by freehand technique in 2024. We excluded patients with congenital spine deformities and revision surgery. The accuracy and incidence of cortical breach of screws were determined by postoperative CT.</p> <p><bold>Results</bold><bold>.</bold> Six hundred eighty-one screws were inserted in the lumbar and thoracic spine of 90 patients using a freehand approach. Out of them, 579 (85%) screws were installed within the pedicle without cortical breach, 78 (11.4%) screws — with a cortical breach less than 2 mm, and 24 (3.5%) screws — a with a cortical breach more than 2 mm. Six hundred fifty-seven (96.4%) screws were considered a safe breach, and 24 (3.6%) screws were considered a dangerous breach.</p> <p><bold>Conclusions</bold><bold>.</bold> The use of freehand technique in pedicle screw fixation appears to be reliable and safe. It remains a valuable method, particularly in a resource-limited environment, providing a cost-effective and radiation-free alternative to navigation-assisted systems. This study reveals that surgical ergonomics, specifically surgeon handedness, do not significantly impact a breach when proper technique is maintained.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность. </bold>Травмы и заболевания грудопоясничного отдела позвоночника представляют серьезную проблему для хирургов и всего здравоохранения в целом. Транспедикулярная фиксация лежит в основе хирургической стабилизации позвонков, а стабильность позвоночника имеет решающее значение для поддержания надлежащей биомеханической функции и предотвращения неврологических нарушений.</p> <p><bold>Цели исследования: </bold>1) провести повторную оценку точности транспедикулярной фиксации в грудопоясничном отделе позвоночника методом «свободной руки», особенно в условиях ограниченных ресурсов, когда применение методов визуализации невозможно; 2) изучить, как хирургическая эргономика, в частности предпочтение хирурга работать левой или правой рукой, влияет на точность установки винтов.</p> <p><bold>Материал и методы. </bold>Было проведено проспективное исследование, в котором приняли участие 90 пациентов с поражениями грудопоясничного отдела, которым в 2024 г. была выполнена транспедикулярная фиксация методом «свободной руки». Пациенты с врожденными деформациями позвоночника и предшествующими ревизиями были исключены. Точность фиксации винтов и частота повреждений кортикального слоя определяли при помощи послеоперационной компьютерной томографии.</p> <p><bold>Результаты.</bold> У 90 пациентов в поясничный и грудной отделы позвоночника был установлен 681 винт методом «свободой руки». Из них 579 (85%) винтов были установлены интрапедикулярно без нарушения кортикального слоя, 78 (11,4%) винтов — с выходом винта из ножки менее 2 мм и 24 (3,5%) винта — с выходом винта из ножки более 2 мм. Положение 657 (96,4%) винтов было признано безопасным, а 24 (3,6%) винтов с повреждениями — опасным.</p> <p><bold>Заключение.</bold> Использование техники «свободной руки» при транспедикулярной фиксации является надежным и безопасным методом, который особенно полезен в условиях ограниченных ресурсов, являясь экономичной и безрадиационной альтернативой навигационным системам. Результаты проведенного исследования показали, что хирургическая эргономика, в частности предпочтение хирурга работать левой или правой рукой, не оказывает существенного влияния на успешность хирургического лечения при соблюдении техники.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>pedicle screw fixation</kwd><kwd>freehand technique</kwd><kwd>thoracolumbar fractures</kwd><kwd>thoracolumbar diseases</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>транспедикулярная фиксация</kwd><kwd>метод «свободной руки»</kwd><kwd>травмы грудопоясничного отдела позвоночника</kwd><kwd>заболевания грудопоясничного отдела позвоночника</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Nath C., Jaiswal D.K. Introduction and History of Spinal Implantology. In: Handbook of Orthopaedic Trauma Implantology. 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