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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">17407</article-id><article-id pub-id-type="doi">10.17816/2311-2905-17407</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">Treatment Outcomes After Open Reduction, Varus Derotational Osteotomy and Dega Acetabuloplasty in Children With Dislocated Dysplastic Hip: Retrospective Analysis</article-title><trans-title-group xml:lang="ru"><trans-title>Результаты открытого вправления врожденного вывиха бедра, варизирующей деротационной остеотомии и ацетабулопластики по Dega у детей с дисплазией тазобедренного сустава: ретроспективный анализ</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/0000-0002-0926-2504</contrib-id><name-alternatives><name xml:lang="en"><surname>Kehayov</surname><given-names>Raycho I.</given-names></name><name xml:lang="ru"><surname>Кехайов</surname><given-names>Райчо Иванов</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="BG">Bulgaria</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>studmma@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5412-6202</contrib-id><name-alternatives><name xml:lang="en"><surname>Semenistyy</surname><given-names>Anton A.</given-names></name><name xml:lang="ru"><surname>Семенистый</surname><given-names>Антон Алексеевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="BG">Bulgaria</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>an.semenistyy@gmail.com</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Georgiev</surname><given-names>Pavel R.</given-names></name><name xml:lang="ru"><surname>Георгиев</surname><given-names>Павел Радков</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="BG">Bulgaria</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>studmma@gmail.com</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gerchev</surname><given-names>Aleksander I.</given-names></name><name xml:lang="ru"><surname>Герчев</surname><given-names>Александр Иванов</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="BG">Bulgaria</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>studmma@gmail.com</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Medical University Sofia</institution></aff><aff><institution xml:lang="ru">Медицинский университет Софии</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Specialized Orthopaedic University Hospital “Prof. B. Boychev”</institution></aff><aff><institution xml:lang="ru">Университетская специализированная ортопедическая больница им. проф. Б. Бойчева</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Medical University Sofia</institution></aff><aff><institution xml:lang="ru">Медицинский университет Софии</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Specialized Orthopaedic University Hospital “Prof. B. Boychev”</institution></aff><aff><institution xml:lang="ru">Университетская специализированная ортопедическая больница им. проф. Б. Бойчева</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-28" publication-format="electronic"><day>28</day><month>12</month><year>2023</year></pub-date><volume>29</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>116</fpage><lpage>124</lpage><history><date date-type="received" iso-8601-date="2023-10-26"><day>26</day><month>10</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-11-27"><day>27</day><month>11</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/17407">https://journal.rniito.org/jour/article/view/17407</self-uri><abstract xml:lang="en"><p><bold>Background<italic>.</italic></bold> Treatment of developmental dysplasia of the hip (DDH) poses a great challenge for pediatric orthopedists due to the high risk of complications, the most severe of which are avascular necrosis of the femoral head and recurrent dislocation. In the most severe form of dysplasia, hip dislocation, the surgery is indicated after 18 months of age. However, the issue of determining the exact surgical intervention remains controversial.</p> <p><bold>The aim of the study<italic> </italic></bold>was to provide our own midterm treatment outcomes of patients with DDH, who underwent open reduction for DDH through a modified Ganz digastric approach and varus derotational femur osteotomy combined with Dega acetabuloplasty.</p> <p><bold>Methods<italic>. </italic></bold>The treatment outcomes of 12 patients with DDH grade III-IV according to the IHDI classification at the age of 1.5 to 3.5 years were analyzed. Thirteen operations were performed: open reduction, derotational varus femur osteotomy combined with Dega acetabuloplasty. In one case, surgery was performed bilaterally in two stages. The average follow-up period was 31.9±4.9 months (from 12 to 66 months). To evaluate the correction performed, a comparative analysis of X-ray images (acetabular index (AI) and femoral neck-shaft angle (FNSA) and Reimers migration index (MI)) was performed before, after surgery and at the last follow-up. The incidence of complications was assessed: recurrent dislocation, avascular necrosis of the femoral head (AVN), nonunion, infection, and loss of correction. In 8 patients with a follow-up period of more than 2 years, the limb length discrapancy was assessed.</p> <p><bold>Results<italic>. </italic></bold>Dega acetabuloplasty allowed to reduce the AI value from 38.62° to 18.76° (p&lt;0.05) after surgery and to 20.61° at the last follow-up. As a result of varus derotational femur osteotomy, a decrease in the FNSA value was noted from 143.62° to 110.53° (p&lt;0.05). AVN was observed in 4 cases in 3 patients (25%) (including the patient who underwent bilateral surgery). At the last follow-up, the FNSA increased to 119.11° in 9 patients without AVN and decreased to 87.75° in patients with AVN. In one patient with AVN, the development of medial dislocation of the femoral head due to progressive varus deformity was noted (up to 41°). No nonunions or infectious complications were observed.</p> <p><bold>Conclusion<italic>. </italic></bold>The combination of open reduction, varus derotational femur osteotomy with Dega acetabuloplasty is an effective method for treatment of DDH in toddlers. The small sample size and the absence of a control group do not allow us to draw conclusions regarding the effectiveness of the modified Ganz digastric approach as a measure to prevent the development of avascular necrosis of the femoral head after surgery.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Актуальность<italic>. </italic></bold>Лечение прогрессирующей дисплазии тазобедренного сустава представляет большую проблему для детских ортопедов в связи с высоким риском осложнений, среди которых наиболее тяжелыми являются аваскулярный некроз головки бедренной кости (АНГБК) и рецидив вывиха. При наиболее тяжелой форме дисплазии — врожденном вывихе бедра — после 1,5-летнего возраста показано оперативное лечение. Однако вопрос определения объема оперативного вмешательства остается спорным.</p> <p><bold>Цель<italic> </italic></bold>— представить среднесрочные результаты лечения пациентов с прогрессирующей дисплазией тазобедренного сустава III–IV степени по классификации IHDI, которым выполнялись открытое вправление вывиха бедра через модифицированный дигастральный доступ Ganz и варизирующая деротационная остеотомия бедренной кости в комбинации с остеотомией подвздошной кости по Dega.</p> <p><bold>Материал и методы<italic>.</italic></bold> Проанализированы результаты лечения 12 пациентов с прогрессирующей дисплазией тазобедренного сустава III–IV степени по классификации IHDI в возрасте от 1,5 до 3,5 лет. Выполнено 13 операций: деротационная варизирующая корригирующая остеотомия бедренной кости в комбинации с остеотомией таза по Dega. В одном случае оперативное вмешательство выполнено билатерально в два этапа. Средний срок наблюдения составил 31,9±4,9 мес. (от 12 до 66 мес.). Для оценки результатов проведенной коррекции анализировали следующие рентгенометрические параметры до операции, после операции и на последнем осмотре: ацетабулярный индекс (АИ), шеечно-диафизарный угол (ШДУ) и индекс миграции Реймера. Проведена оценка частоты возникновения осложнений: рецидив вывиха, АНГБК, несращения, инфекция и потеря коррекции. У 8 пациентов с периодом наблюдения более 2 лет проведена оценка разницы длины конечностей.</p> <p><bold>Результаты<italic>. </italic></bold>Проведение остеотомии по Dega позволило снизить значение АИ с 38,62° до 18,76° после операции и до 20,61° на последнем осмотре (<italic>p</italic>&lt;0,05). В результате варизирующей деротационной остеотомии бедра отмечено снижение значения ШДУ с 143,62° до 110,53° (<italic>p</italic>&lt;0,05). АНГБК наблюдался в 4 случаях у 3 пациентов (25%), включая пациента, которому была выполнена операция с двух сторон. На последнем осмотре ШДУ увеличился до 119,11° у 9 пациентов, у которых не было отмечено равития АНГБК, и уменьшился до 87,75° у пациентов с АНГБК. У одного пациента с АНГБК отмечено развитие вывиха головки бедренной кости из-за прогрессирующей варусной деформации (до 41°). Несращений и инфекционных осложнений не наблюдалось.</p> <p><bold>Заключение<italic>. </italic></bold>Открытое устранение вывиха бедра и варизирующая деротационная остеотомия бедренной кости в комбинации с остеотомией подвздошной кости по Dega является эффективным методом лечения прогрессирующей дисплазии тазобедренного сустава III–IV степени по классификации IHDI. Маленькая выборка и отсутствие группы сравнения не позволяют сделать выводы об эффективности выполнения модифицированного дигастрального метода по Ganz как меры профилактики развития аваскулярного некроза головки бедренной кости после операции.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>hip dysplasia</kwd><kwd>DDH</kwd><kwd>congenital hip dislocation</kwd><kwd>derotational varus femur osteotomy</kwd><kwd>pelvic osteotomy</kwd><kwd>acetabuloplasty</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>дисплазия тазобедренного сустава</kwd><kwd>врожденный вывих бедра</kwd><kwd>деротационная варизирующая остеотомия бедра</kwd><kwd>остеотомия таза</kwd><kwd>ацетабулопастика</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Azar F.M., Canale S.T., Beaty J.H. Campbell’s Operative Orthopaedics. Vol. 4. 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