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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">5561</article-id><article-id pub-id-type="doi">10.17816/2311-2905-5561</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>Случаи из практики</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Case Reports</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">Progressive Calcification of Supraspinatus Tendon in Patients With Calcific Tendinitis: Two Case Reports</article-title><trans-title-group xml:lang="ru"><trans-title>Увеличение кальцината сухожилия надостной мышцы: два клинических случая</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/0000-0002-9333-5293</contrib-id><name-alternatives><name xml:lang="en"><surname>Ryazantsev</surname><given-names>Mikhail S.</given-names></name><name xml:lang="ru"><surname>Рязанцев</surname><given-names>Михаил Сергеевич</given-names></name><name xml:lang="zh"><surname>Ryazantsev</surname><given-names>Mikhail S.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Med.)</p></bio><email>dtwka88@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/0000-0001-5081-8319</contrib-id><name-alternatives><name xml:lang="en"><surname>Olchev</surname><given-names>Aleksandr A.</given-names></name><name xml:lang="ru"><surname>Ольчев</surname><given-names>Александр Александрович</given-names></name><name xml:lang="zh"><surname>Olchev</surname><given-names>Aleksandr A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>olchevshoulder@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3235-5407</contrib-id><name-alternatives><name xml:lang="en"><surname>Logvinov</surname><given-names>Alexey N.</given-names></name><name xml:lang="ru"><surname>Логвинов</surname><given-names>Алексей Николаевич</given-names></name><name xml:lang="zh"><surname>Logvinov</surname><given-names>Alexey N.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Med.)</p></bio><email>logvinov09@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2973-8303</contrib-id><name-alternatives><name xml:lang="en"><surname>Frolov</surname><given-names>Aleksandr V.</given-names></name><name xml:lang="ru"><surname>Фролов</surname><given-names>Александр Владимирович</given-names></name><name xml:lang="zh"><surname>Frolov</surname><given-names>Aleksandr V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><bio xml:lang="zh"><p>Cand. Sci. (Med.)</p></bio><email>afrolov@emcmos.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/0000-0002-5750-626X</contrib-id><name-alternatives><name xml:lang="en"><surname>Andreev</surname><given-names>Pavel S.</given-names></name><name xml:lang="ru"><surname>Андреев</surname><given-names>Павел Сергеевич</given-names></name><name xml:lang="zh"><surname>Andreev</surname><given-names>Pavel S.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>pandreev@emcmos.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/0000-0002-8769-9963</contrib-id><name-alternatives><name xml:lang="en"><surname>Korolev</surname><given-names>Andrey V.</given-names></name><name xml:lang="ru"><surname>Королев</surname><given-names>Андрей Вадимович</given-names></name><name xml:lang="zh"><surname>Korolev</surname><given-names>Andrey V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor</p></bio><bio xml:lang="ru"><p>доктор мед. наук, профессор</p></bio><bio xml:lang="zh"><p>Dr. Sci. (Med.), Professor</p></bio><email>akorolev@emcmos.ru</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">European Clinic of Sports Traumatology and Orthopedics (ECSTO)</institution></aff><aff><institution xml:lang="ru">Европейский медицинский центр, Европейская клиника спортивной травматологии и ортопедии (ECSTO)</institution></aff><aff><institution xml:lang="zh">European Clinic of Sports Traumatology and Orthopedics (ECSTO)</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">ГБОУ ВПО «Российский университет дружбы народов»</institution></aff><aff><institution xml:lang="zh">RUDN University</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">City Clinical Emergency Hospital</institution></aff><aff><institution xml:lang="ru">ГБУ РО «Городская клиническая больница скорой медицинской помощи»</institution></aff><aff><institution xml:lang="zh">City Clinical Emergency Hospital</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2023-04-24" publication-format="electronic"><day>24</day><month>04</month><year>2023</year></pub-date><pub-date date-type="pub" iso-8601-date="2023-06-23" publication-format="electronic"><day>23</day><month>06</month><year>2023</year></pub-date><volume>29</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>110</fpage><lpage>117</lpage><history><date date-type="received" iso-8601-date="2023-02-14"><day>14</day><month>02</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-03-27"><day>27</day><month>03</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2023,</copyright-statement><copyright-year>2023</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/5561">https://journal.rniito.org/jour/article/view/5561</self-uri><abstract xml:lang="en"><p><bold><italic>Background</italic></bold><bold><italic>.</italic></bold> Calcific tendinitis (CT) is a common disease characterized by the presence of calcific deposits in the tendons of the rotator cuff. CT has a wave-like course, and the formed calcification tends to be resorbed. The lysis of the calcium deposits is characterized by a strong pain syndrome, and the site of the calcification is replaced by collagen.</p> <p><bold><italic>The</italic></bold> <bold><italic>aim</italic></bold> — to demonstrate clinical observations in which the deposited calcification in the rotator cuff did not resorb but increased over time.</p> <p><bold><italic>Cases</italic></bold> <bold><italic>presentation</italic></bold><bold><italic>.</italic></bold> We report on two rare clinical cases of an increase in calcification of the rotator cuff in patients aged 51 and 50 years old. Calcific tendinitis occurred with periods of remission and exacerbation. During exacerbations, conservative treatment was carried out, including courses of massage, physiotherapy, and pain relief therapy. In one case, a single injection of a hormonal drug was performed. Control X-rays and MRI during one of the exacerbations showed an increase in the size of the calcifications. Due to the lack of effect from conservative treatment and the detected increase in calcifications, a decision was made to perform surgical treatment. Arthroscopic removal of calcifications with re-fixation of the supraspinatus tendon and elimination of internal damage was performed on both patients. Good results were noted on the follow-up examination according to the ASES orthopedic score, as well as clinical examination data.</p> <p><bold><italic>Conclusion</italic></bold><bold><italic>. </italic></bold>The presented case reports illustrate the possible increase in calcification, unlike the standard course of the disease, in which the calcification is resorbed. Further study of this pathology is necessary to establish the causes and mechanisms of calcification increase over time and its dependence on the phase of the disease.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Актуальность. </italic></bold>Кальцинирующий тендинит (КТ) является распространенным заболеванием, характеризующимся отложением депо кальция в сухожилиях вращательной манжеты плечевого сустава. КТ свойственно волнообразное течение, а сформированный кальцинат имеет тенденцию к рассасыванию. Лизис депо кальция характеризуется сильным болевым синдромом, а место кальцината замещается коллагеном.</p> <p><bold><italic>Целью</italic></bold> данной работы было продемонстрировать клинические наблюдения, в которых депонированный кальцинат вращательной манжеты не рассасывался, а увеличивался со временем.</p> <p><bold><italic>Описание случаев. </italic></bold>В работе приведены два редких клинических случая увеличения кальцината вращательной манжеты у пациенток 51 и 50 лет. Кальцинирующий тендинит протекал с периодами ремиссии и обострений. Во время обострений проводилось консервативное лечение, которое включало курсы массажа, физиотерапии, обезболивающую терапию. В одном случае однократно выполнялась инъекция гормонального препарата. На контрольных рентгенограммах и МРТ во время одного из обострений было отмечено увеличение размеров кальцинатов. Ввиду отсутствия эффекта от консервативной терапии, а также выявленного увеличения кальцинатов принято решение о хирургическом лечении. Обоим пациенткам выполнено артроскопическое удаление кальцинатов с рефиксацией сухожилия вращательной манжеты и устранением внутренних повреждений. На контрольном осмотре отмечены хорошие результаты по ортопедической шкале ASES, а также данным клинического осмотра.</p> <p><bold><italic>Заключение. </italic></bold>Представленные клинические случаи иллюстрируют возможное увеличения кальцината в отличие от стандартного течения заболевания, при котором кальцинат рассасывается. Необходимо продолжить изучение данной патологии для установления причин и механизмов увеличения кальцината с течением времени и его зависимости от фазы заболевания.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>calcific tendinitis</kwd><kwd>rotator cuff</kwd><kwd>calcification of the rotator cuff</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>кальцинирующий тендинит</kwd><kwd>вращательная манжета</kwd><kwd>кальцинат вращательной манжеты</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Umamahesvaran B., Sambandam S.N., Mounasamy V., Gokulakrishnan P.P., Ashraf M. Calcifying Tendinitis of Shoulder: A Concise Review. J Orthop. 2018;15(3):776-782. doi: 10.1016/j.jor.2018.05.040.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Yoo Y.S., Park J.Y., Kim M.S., Cho N.S., Lee Y.B., Cho S.H. et al. 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