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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">Journal of Clinical Practice</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Clinical Practice</journal-title><trans-title-group xml:lang="ru"><trans-title>Клиническая практика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2220-3095</issn><issn publication-format="electronic">2618-8627</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">688522</article-id><article-id pub-id-type="doi">10.17816/clinpract688522</article-id><article-id pub-id-type="edn">AZVFNG</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Case reports</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Клинические случаи</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">The clinical case of the neglected damage of the semitendinous, the semimembranous and the biceps femoris muscles in an adolescent judo athlete</article-title><trans-title-group xml:lang="ru"><trans-title>Клинический случай застарелого повреждения полусухожильной, полуперепончатой и двуглавой мышц бедра у подростка-дзюдоиста</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4369-9619</contrib-id><contrib-id contrib-id-type="spin">4366-8309</contrib-id><name-alternatives><name xml:lang="en"><surname>Rokhoev</surname><given-names>Saigidula A.</given-names></name><name xml:lang="ru"><surname>Рохоев</surname><given-names>Сайгидула Абдурахманович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>09saga@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9712-5509</contrib-id><contrib-id contrib-id-type="spin">4651-8232</contrib-id><name-alternatives><name xml:lang="en"><surname>Zorin</surname><given-names>Vyacheslav Ivanovich</given-names></name><name xml:lang="ru"><surname>Зорин</surname><given-names>Вячеслав Иванович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>zoringlu@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6112-3309</contrib-id><contrib-id contrib-id-type="spin">5341-4492</contrib-id><name-alternatives><name xml:lang="en"><surname>Kartavenko</surname><given-names>Kirill Aleksandrovich</given-names></name><name xml:lang="ru"><surname>Картавенко</surname><given-names>Кирилл Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>med-kart@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7743-2050</contrib-id><contrib-id contrib-id-type="spin">8093-3924</contrib-id><name-alternatives><name xml:lang="en"><surname>Semenov</surname><given-names>Sergey Yu.</given-names></name><name xml:lang="ru"><surname>Семенов</surname><given-names>Сергей Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>sergey2810@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8278-7032</contrib-id><contrib-id contrib-id-type="spin">3684-5167</contrib-id><name-alternatives><name xml:lang="en"><surname>Lukyanov</surname><given-names>Sergey Andreevich</given-names></name><name xml:lang="ru"><surname>Лукьянов</surname><given-names>Сергей Андреевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>Sergey.lukyanov95@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр детской травматологии и ортопедии имени Г.И. Турнера</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">North-Western State Medical University named after I.I. Mechnikov</institution></aff><aff><institution xml:lang="ru">Северо-Западный государственный медицинский университет имени И.И. Мечникова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-01-07" publication-format="electronic"><day>07</day><month>01</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-02-05" publication-format="electronic"><day>05</day><month>02</month><year>2026</year></pub-date><volume>16</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>113</fpage><lpage>121</lpage><history><date date-type="received" iso-8601-date="2025-07-31"><day>31</day><month>07</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-26"><day>26</day><month>11</month><year>2025</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-year>2026</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://clinpractice.ru/clinpractice/article/view/688522">https://clinpractice.ru/clinpractice/article/view/688522</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Sports-related injuries in children and adolescents can have their specific features related to the epidemiology, the structure and the difficulties of diagnostics and treatment. The injuries of the flexor muscles of the shin in children during the sports activities are a rare type of damage, which may be a reason for late diagnosis. The choice of treatment tactics in such a situation may cause difficulties for the specialist. <bold>CLINICAL CASE DESCRIPTION:</bold> The authors have followed-up the adolescent aged 17 years who was a judoka with a 3-year-old injury sustained during sparring. With the patient positioned lying prone, an evaluation was done for the muscle stamina by holding the completely extended leg above the contact surface: on the left side — 2 minutes, on the right side — 18 seconds. The lower extremity functional scale (LEFS) score was 49 points, indicating significant limitations. The following surgical treatments were performed: myolysis, tenolysis of the flexor muscles of the shin, neurolysis of the sciatic nerve branches, plication of the semimembranous muscle tendon, myotenodesis of the semitendinous muscle. Three months after surgery, a repeated evaluation was done in order to evaluate the function of the lower limb using the LEFS scale, as well as for the muscle stamina by measuring the time of holding the completely extended leg above the contact surface (position — lying prone): 62 points and 1 minute 43 seconds, respectively. The optimal variant for the injury of the flexor muscles in the shin is the early diagnostics and surgical treatment, providing the restoration of the functions in the injured muscles. In cases of neglected injuries, the restoration is possible only by means of reconstructive surgery. In cases of the significant defect and in the absence of the need for restoring the high athletic performance, alternative surgical techniques can be used. <bold>CONCLUSION:</bold> In case of the neglected injury with significant retraction of one of the flexor muscles in the shin and relative preservation of the other (provided the patient does not plan to return to professional sports), myotenodesis may be considered an effective surgical treatment option.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Спортивные травмы у детей и подростков могут иметь особенности, связанные с эпидемиологией, структурой, сложностями диагностики и лечения. Повреждения мышц-сгибателей голени у детей на занятиях спортом являются редким повреждением, что может быть причиной поздней диагностики. Выбор лечебной тактики в данной ситуации может вызывать трудности у специалиста. <bold>Описание клинического случая.</bold> Под наблюдением авторов находился подросток в возрасте 17 лет, дзюдоист, с давностью травмы 3 года, полученной во время спарринга. В положении на животе произведена оценка выносливости мышц путём удержания полностью разогнутой ноги над контактной поверхностью: слева — 2 минуты, справа — 18 секунд. Оценка функции по функциональной шкале нижних конечностей LEFS составила 49 баллов, что указывает на существенные ограничения. Проведено хирургическое лечение: миолиз, тенолиз сгибателей голени, невролиз ветвей седалищного нерва, пликация сухожилия полуперепончатой мышцы, миотенодез полусухожильной мышцы. Через 3 месяца после операции проведена повторная оценка функции нижней конечности по шкале LEFS, а также выносливости мышц путём удержания полностью разогнутой ноги над контактной поверхностью в положении лёжа на животе: 62 балла и 1 минута 43 секунды соответственно. Оптимальным вариантом при повреждении мышц-сгибателей голени являются ранняя диагностика и хирургическое лечение, обеспечивающее восстановление функции повреждённых мышц. При застарелых повреждениях восстановление возможно только посредством пластики. При значительном дефекте и отсутствии требований к восстановлению высокой спортивной физической активности могут быть применены альтернативные хирургические техники. <bold>Заключение.</bold> При застарелом повреждении с выраженной ретракцией одной из мышц-сгибателей голени и относительной сохранности другой (при условии, что пациент не планирует возвращаться в профессиональный спорт) выполнение миотенодеза может рассматриваться в качестве эффективного варианта хирургического лечения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>sports injury</kwd><kwd>muscle injury</kwd><kwd>tear hamstrings muscles</kwd><kwd>lower limb muscles</kwd><kwd>knee flexors muscles</kwd><kwd>tenodesis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>спортивная травма</kwd><kwd>повреждения мышц</kwd><kwd>разрыв мышцы нижних конечностей</kwd><kwd>хамстринги</kwd><kwd>сгибатели голени</kwd><kwd>тенодез</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Ministry of Health of the Russian Federation</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Министерство здравоохранения Российской Федерации</institution></institution-wrap></funding-source><award-id>056-00043-24-01</award-id></award-group><funding-statement xml:lang="en">The study was carried out within the framework of the state assignment, the research topic “Monitoring the state of the musculoskeletal system in children who play sports and do not play sports, based on a comprehensive assessment of the level of motor activity, clinical imaging, biomechanical parameters, as well as biomarkers of the state of bone and muscle tissue” (registration number 124020400015-5).</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках государственного задания, тема НИР «Мониторинг состояния опорно-двигательного аппарата у детей, занимающихся спортом и не занимающихся спортом, на основе комплексной оценки уровня двигательной активности, клинико-визуализирующих, биомеханических параметров, а также биомаркеров состояния костной и мышечной ткани» (регистрационный номер 124020400015-5).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Beltran L, Ghazikhanian V, Padron M, Beltran J. 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