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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">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">58512</article-id><article-id pub-id-type="doi">10.17816/vto58512</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</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">Screw fixation failure after 360° fusion at the lumbar level</article-title><trans-title-group xml:lang="ru"><trans-title>Несостоятельность винтовой фиксации после спондилодеза 360° на поясничном уровне</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9916-3947</contrib-id><name-alternatives><name xml:lang="en"><surname>Leonova</surname><given-names>Olga N.</given-names></name><name xml:lang="ru"><surname>Леонова</surname><given-names>Ольга Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Cand. Sci. (Med.), Research scientist</p></bio><bio xml:lang="ru"><p>канд. мед. наук, научный сотрудник</p></bio><email>onleonova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4430-700X</contrib-id><contrib-id contrib-id-type="scopus">57189456380</contrib-id><contrib-id contrib-id-type="spin">5367-5438</contrib-id><name-alternatives><name xml:lang="en"><surname>Baykov</surname><given-names>Evgenii S.</given-names></name><name xml:lang="ru"><surname>Байков</surname><given-names>Евгений Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, PhD, Cand. Sci. (Med.), Head of the Department of Neurosurgery No. 2</p></bio><bio xml:lang="ru"><p>канд. мед. наук, заведующий отделением нейрохирургии № 2</p></bio><email>Evgen-bajk@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2570-3066</contrib-id><contrib-id contrib-id-type="scopus">54795500200</contrib-id><name-alternatives><name xml:lang="en"><surname>Krutko</surname><given-names>Aleksandr V.</given-names></name><name xml:lang="ru"><surname>Крутько</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Senior Researcher</p></bio><bio xml:lang="ru"><p>д-р мед. наук, старший научный сотрудник</p></bio><email>ortho-ped@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tsivyan Novosibirsk Research Institute of Traumatology and Orthopaedics</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное учреждение «Новосибирский научно-исследовательский институт травматологии и ортопедии им. Я.Л. Цивьяна» Министерства здравоохранения Российской Федерации</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">N.N. Priorov National Medical Research Center for Traumatology and Orthopedics</institution></aff><aff><institution xml:lang="ru">Федеральное государственное бюджетное учреждение «Национальный медицинский исследовательский центр травматологии и ортопедии имени Н.Н. Приорова» Министерства здравоохранения Российской Федерации</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-12-27" publication-format="electronic"><day>27</day><month>12</month><year>2020</year></pub-date><volume>27</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>11</fpage><lpage>18</lpage><history><date date-type="received" iso-8601-date="2021-01-21"><day>21</day><month>01</month><year>2021</year></date><date date-type="accepted" iso-8601-date="2021-01-28"><day>28</day><month>01</month><year>2021</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, ООО "Эко-Вектор"</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">ООО "Эко-Вектор"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2021-12-27"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-8678/article/view/58512">https://journals.eco-vector.com/0869-8678/article/view/58512</self-uri><abstract xml:lang="en"><p><bold><italic>Aim:</italic></bold><italic> to identify possible predictors of screw loosening (SL) in patients after decompression and fusion at the lumbar level for degenerative spinal diseases.</italic></p> <p><bold><italic>Methods.</italic></bold><italic> The data of patients with degenerative lumbar diseases who underwent primary decompression and fusion and who were re-hospitalized were analyzed. Clinical data (demography, characteristics of primary surgical procedures and characteristics of the perioperative period), results of radiological methods (presence and characteristics of resorption around screws, bone density (BMD) by densitometry and CT, intervertebral fusion grade and implant subsidence) were evaluated.</italic></p> <p><bold><italic>Results.</italic></bold><italic> The study included 19 patients with SL and 37 patients without resorption, median age 59.1 [51.4; 63.1] years, men 20 (35.7%). When comparing patients with and without SL, there was no significant difference in gender, age, method of surgery, length of the fixation (p &gt; 0.05). According to CT scans, the bone density of the vertebrae between the groups did not differ significantly (p &gt; 0.05). In the group with SL, fusion failure was more common than in the group without SL (22.6% versus 20.7%), but the differences are not significant (p &gt; 0.05). In the intergroup comparison, it was determined that, in general, there were more complications in the group with SL than in the group without SL (p = 0.00015) due to the greater number of infectious complications (p = 0.00044). Also, patients with SL had a significantly longer duration of primary hospital stay (p = 0.000021).</italic></p> <p><bold><italic>Conclusion.</italic></bold><italic> Patients with SL after primary surgery have a significantly longer hospital stay duration, mainly (45.8%) due to infectious complications. Patients with SL have comparable bone density in both the vertebral bodies and pedicles compared to patients without SL.</italic></p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Цель: </italic></bold><italic>выявить возможные предикторы несостоятельности винтовой фиксации (screw loosening — SL) у пациентов после декомпрессивно-стабилизирующих операций на поясничном уровне по поводу дегенеративных заболеваний позвоночника.</italic></p> <p><bold><italic>Материалы и методы.</italic></bold><italic> Проанализированы данные пациентов с дегенеративными заболеваниями поясничного отдела позвоночника, которым было проведено первичное декомпрессивно-стабилизирующее вмешательство и которые были повторно госпитализированы. Оценивали клинические данные (демографию, характеристику первичных оперативных вмешательств и особенностей периоперационного периода), результаты лучевых методов диагностики (наличие и характеристика зон резорбции вокруг винтов, плотность кости по денситометрии и по компьютерной томографии, формирование межтелового блока и проседание имплантов).</italic></p> <p><bold><italic>Результаты.</italic></bold><italic> В исследование вошли 19 пациентов с SL и 37 пациентов без признаков резорбции, медиана возраста 59,1 [51,4; 63,1] лет, мужчин 20 (35,7 %). При сравнении пациентов с SL и без нее значимой разницы по полу, возрасту, методике выполнения операции, протяженности конструкции не выявлено (p &gt; 0,05). По данным компьютерной томографии плотность костной ткани позвонков между группами значимо не различается (p &gt; 0,05). В группе с SL несформированный костный блок встречается чаще, чем в группе без SL (22,6 против 20,7 %), но различия не значимы (p &gt; 0,05). При межгрупповом сравнении было определено, что в целом в группе с SL осложнений было больше, чем в группе без SL (p = 0,00015) за счет большего количества инфекционных осложнений (p = 0,00044). Также у пациентов с SL отмечено значимо большая длительность первичной госпитализации (p = 0,000021).</italic></p> <p><bold><italic>Заключение.</italic></bold><italic> Пациенты с SL после первичной операции имеют значимо больший период госпитализации в основном (45,8 %) за счет инфекционных осложнений. Пациенты с SL имеют сопоставимую плотность костной ткани как в телах позвонков, так и в ножках дуги позвонка по сравнению с пациентами без SL.</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>transpedicular screw fixation</kwd><kwd>Screw fixation failure</kwd><kwd>bone resorption</kwd><kwd>screw loosening</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>транспедикулярная фиксация</kwd><kwd>несостоятельность винтовой фиксации</kwd><kwd>резорбция костной ткани</kwd><kwd>screw loosening</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Yavin D, Casha S, Wiebe S, et al. Lumbar fusion for degenerative disease: a systematic review and meta-analysis. Clin Neurosurg. 2017;80(5):701–715. doi: 10.1093/neuros/nyw162.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Irmola TM, Häkkinen A, Järvenpää S, et al. Reoperation rates following instrumented lumbar spine fusion. 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