<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">pirogovestnik</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Национального медико-хирургического центра им. Н.И. Пирогова</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Pirogov National Medical &amp; Surgical Center</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-8255</issn><issn pub-type="epub">2782-3628</issn><publisher><publisher-name>Национальный медико-хирургический Центр им. Н.И. Пирогова</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25881/20728255_2026_21_1_163</article-id><article-id custom-type="elpub" pub-id-type="custom">pirogovestnik-553</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ НАБЛЮДЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CASE REPORTS</subject></subj-group></article-categories><title-group><article-title>ПЕРИИМПЛАНТНЫЙ ПОДВЕРТЕЛЬНЫЙ ПЕРЕЛОМ БЕДРЕННОЙ КОСТИ ПОСЛЕ ОСТЕОСИНТЕЗА ШЕЙКИ БЕДРЕННОЙ КОСТИ МЕТОДОМ ДВУХОПОРНОЙ ДВУХПОЛЮСНОЙ ФИКСАЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>PERIPROSTHETIC SUBTROCHANTERIC FEMORAL FRACTURE FOLLOWING OSTEOSYNTHESIS OF FEMORAL NECK FRACTURE USING BIPLANE DOUBLE-SUPPORTED SCREW FIXATION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Назаров</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nazarov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">dilovarnazarov95@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Айрапетов</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ajrapetov</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Загородний</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zagorodnij</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Миронов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Mironov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карпович</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpovich</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лукин</surname><given-names>М. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Lukin</surname><given-names>M. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурков</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Burkov</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Джоджуа</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhodzhua</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГАОУ ВО «Российский университет дружбы народов им. Патриса Лумумбы»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Peoples’ Friendship University of Russia named after Patrice Lumumba</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГАОУ ВО «Российский университет дружбы народов им. Патриса Лумумбы»; ФГБУ «НМИЦ ТО им. Н.Н. Приорова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Peoples’ Friendship University of Russia named after Patrice Lumumba; Research Center for Traumatology and Orthopedics named after N.N. Priorov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГКБ № 31 им. акад. Г.М. Савельевой</institution><country>Россия</country></aff><aff xml:lang="en"><institution>City Clinical Hospital No. 31 named after Academician G.M. Savelyeva</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБУ «Национальный медико-хирургический Центр им. Н.И. Пирогова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pirogov National Medical and Surgical Center</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>21</day><month>03</month><year>2026</year></pub-date><volume>21</volume><issue>1</issue><fpage>163</fpage><lpage>165</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Назаров Д.С., Айрапетов Г.А., Загородний Н.В., Миронов А.Н., Карпович Н.И., Лукин М.П., Бурков Д.В., Джоджуа А.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Назаров Д.С., Айрапетов Г.А., Загородний Н.В., Миронов А.Н., Карпович Н.И., Лукин М.П., Бурков Д.В., Джоджуа А.В.</copyright-holder><copyright-holder xml:lang="en">Nazarov D.S., Ajrapetov G.A., Zagorodnij N.V., Mironov A.N., Karpovich N.I., Lukin M.P., Burkov D.V., Dzhodzhua A.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://submit.pirogov-vestnik.ru/jour/article/view/553">https://submit.pirogov-vestnik.ru/jour/article/view/553</self-uri><abstract><sec><title>Актуальность</title><p>Актуальность. На фоне глобального старения населения отмечается значительный рост частоты переломов шейки бедренной кости (ШБК) у пожилых. Несмотря на широкое применение канюлированных винтов, частота осложнений достигает 46%, что стимулирует поиск альтернативных методик, таких как метод двухопороной двухполюсной фиксации (ДДФ).</p></sec><sec><title>Цель</title><p>Цель. Представить осложнение в результате остеосинтеза шейки бедренной кости – периимплантный подвертельный перелом – и проанализировать его причины.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Описано клиническое наблюдение пациентки 64 лет с переломом ШБК Garden II, осложнившимся периимплантным переломом через 1,5 месяца после БДОФ. Проанализированы данные когорты из 31 пациента, оперированного методом БДОФ за период 09.2021–12.2024 в ГКБ №31.</p></sec><sec><title>Результаты</title><p>Результаты. В 3,2% случаев (n = 1) зафиксирован периимплантный подвертельный перелом. Ревизионный остеосинтез выполнен интрамедуллярным штифтом с положительным исходом.</p></sec><sec><title>Заключение</title><p>Заключение. Данный случай подчеркивает необходимость неукоснительного соблюдения биомеханических принципов ДДФ и разработки направляющего устройства для установки дистальных винтов, что позволит минимизировать риск повторных периимплантных переломов бедренной кости.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Background</title><p>Background. Global population aging has led to a significant increase in femoral neck fractures (FNF) among elderly patients. Despite the widespread use of cannulated screws, complication rates reach 46%, prompting the search for alternative techniques such as Biplanar Double-Supported Fixation (BDSF).</p></sec><sec><title>Objective</title><p>Objective. To present a rare complication of BDSF – periprosthetic subtrochanteric fracture – and analyze its etiological factors.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. We describe a clinical case of a 64-year-old female with Garden type II FNF complicated by a periprosthetic fracture 1.5 months after BDSF. Data from a cohort of 31 patients who underwent BDSF between September 2021 and December 2024 at City Clinical Hospital No. 31 were analyzed.</p></sec><sec><title>Results</title><p>Results. Periprosthetic subtrochanteric fracture occurred in 3.2% of cases (n=1). Revision osteosynthesis with an intramedullary nail resulted in a successful outcome.</p></sec><sec><title>Conclusion</title><p>Conclusion. This case highlights the necessity of strict adherence to the biomechanical principles of BDSF (Biplane Double-Supported Fixation) and the development of a guiding device for distal screw insertion, which would minimize the risk of repeat peri-implant femoral fractures.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>перелом шейки бедра</kwd><kwd>бипланарная двухопорная фиксация</kwd><kwd>периимплантный перелом</kwd><kwd>остеосинтез</kwd><kwd>осложнения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Femoral neck fracture</kwd><kwd>Biplane Double-Supported Fixation (BDSF)</kwd><kwd>Periprosthetic fracture</kwd><kwd>Osteosynthesis</kwd><kwd>Complications</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Gjertsen J-E, Vinje T, Engesæter LB, Lie SA, et al. Internal Screw Fixation Compared with Bipolar Hemiarthroplasty for Treatment of Displaced Femoral Neck Fractures in Elderly Patients. The Journal of Bone &amp; Joint Surgery. 2010; 92(3): 619-628. doi: 10.2106/JBJS.H.01750.</mixed-citation><mixed-citation xml:lang="en">Gjertsen J-E, Vinje T, Engesæter LB, Lie SA, et al. Internal Screw Fixation Compared with Bipolar Hemiarthroplasty for Treatment of Displaced Femoral Neck Fractures in Elderly Patients. The Journal of Bone &amp; Joint Surgery. 2010; 92(3): 619-628. doi: 10.2106/JBJS.H.01750.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Rogmark C, Johnell O. Primary arthroplasty is better than internal fixation of displaced femoral neck fractures: A meta-analysis of 14 randomized studies with 2,289 patients. Acta Orthopaedica. 2006; 77(3): 359-367. doi:10.1080/17453670610046262.</mixed-citation><mixed-citation xml:lang="en">Rogmark C, Johnell O. Primary arthroplasty is better than internal fixation of displaced femoral neck fractures: A meta-analysis of 14 randomized studies with 2,289 patients. Acta Orthopaedica. 2006; 77(3): 359-367. doi:10.1080/17453670610046262.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Davison JN, Calder SJ, Anderson GH, et al. Treatment for displaced intracapsular fracture of the proximal femur. A prospective, randomised trial in patients aged 65 to 79 years. The Journal of bone and joint surgery British volume. 2001; 83: 206-212.</mixed-citation><mixed-citation xml:lang="en">Davison JN, Calder SJ, Anderson GH, et al. Treatment for displaced intracapsular fracture of the proximal femur. A prospective, randomised trial in patients aged 65 to 79 years. The Journal of bone and joint surgery British volume. 2001; 83: 206-212.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Li N, Cheng KY, Fan J, et al. Evaluating three internal fixation techniques for Pauwels III femoral neck fractures via finite element analysis. Sci Rep. 2024; 14: 15519. doi: 10.1038/s41598-024-66638-1.</mixed-citation><mixed-citation xml:lang="en">Li N, Cheng KY, Fan J, et al. Evaluating three internal fixation techniques for Pauwels III femoral neck fractures via finite element analysis. Sci Rep. 2024; 14: 15519. doi: 10.1038/s41598-024-66638-1.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Ямщиков О.Н., Емельянов С.А., Беляев А.А., Чумаков Р.В. Опыт применения малоинвазивного перкутанного остеосинтеза при переломах проксимального отдела бедра // Вестник медицинского института «РЕАВИЗ». Реабилитация, Врач и Здоровье.–2024.–№14(2).–С.73-78. doi: 10.20340/vmi-rvz.2024.2.CLIN.9.</mixed-citation><mixed-citation xml:lang="en">YAmshchikov ON, Emel’yanov SA, Belyaev AA, CHumakov RV. Opyt primeneniya maloinvazivnogo perkutannogo osteosinteza pri perelomah proksimal’nogo otdela bedra. Vestnik medicinskogo instituta «REAVIZ». Reabilitaciya, Vrach i Zdorov’e. 2024; 14(2): 73-78. (In Russ.) doi: 10.20340/vmi-rvz.2024.2.CLIN.9.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Filipov OB. Biplane Double-supported Screw Fixation of Femoral Neck Fractures: Surgical Technique and Surgical Notes. Journal of the American Academy of Orthopaedic Surgeons. 2019; 27(11): e507-e515. doi: 10.5435/jAAOS-D-17-00117.</mixed-citation><mixed-citation xml:lang="en">Filipov OB. Biplane Double-supported Screw Fixation of Femoral Neck Fractures: Surgical Technique and Surgical Notes. Journal of the American Academy of Orthopaedic Surgeons. 2019; 27(11): e507-e515. doi: 10.5435/jAAOS-D-17-00117.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Xia Y, Zhang W, Hu H, Yan L, Zhan S, Wang J. Biomechanical study of two alternative methods for the treatment of vertical femoral neck fractures–A finite element analysis. Comput Methods Programs Biomed. 2021; 211: 106409. doi: 10.1016/j.cmpb.2021.106409.</mixed-citation><mixed-citation xml:lang="en">Xia Y, Zhang W, Hu H, Yan L, Zhan S, Wang J. Biomechanical study of two alternative methods for the treatment of vertical femoral neck fractures–A finite element analysis. Comput Methods Programs Biomed. 2021; 211: 106409. doi: 10.1016/j.cmpb.2021.106409.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Jilani LZ, Abbas MB, Shaan ZH, Ahmad S, Abbas M. Outcomes of BDSF technique for osteosynthesis of femoral neck fractures. Int J Burns Trauma. 2023; 13(3): 149-155.</mixed-citation><mixed-citation xml:lang="en">Jilani LZ, Abbas MB, Shaan ZH, Ahmad S, Abbas M. Outcomes of BDSF technique for osteosynthesis of femoral neck fractures. Int J Burns Trauma. 2023; 13(3): 149-155.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Singh ChI, Gonmei L, Sharma ChB, Singh SB. Evaluation of Biplane Double Supported Screw Fixation of Femoral Neck Fracture: A Longitudinal Study at a Tertiary Health Care Center in Manipur. Trends in Medical Research, 202116(2), 48–54. doi: 10.3923.</mixed-citation><mixed-citation xml:lang="en">Singh ChI, Gonmei L, Sharma ChB, Singh SB. Evaluation of Biplane Double Supported Screw Fixation of Femoral Neck Fracture: A Longitudinal Study at a Tertiary Health Care Center in Manipur. Trends in Medical Research, 202116(2), 48–54. doi: 10.3923.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Galal S, Nagy M. Non-parallel screw fixation for femoral neck fractures in young adults. J Clin Orthop Trauma. 2017; 8(3): 220-224. doi: 10.1016/j.jcot.2017.07.003.</mixed-citation><mixed-citation xml:lang="en">Galal S, Nagy M. Non-parallel screw fixation for femoral neck fractures in young adults. J Clin Orthop Trauma. 2017; 8(3): 220-224. doi: 10.1016/j.jcot.2017.07.003.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Kruse M, Mohammed J, Sayed-Noor A, et al. Peri-implant femoral fractures in hip fracture patients treated with osteosynthesis: a retrospective cohort study of 1965 patients. Eur J Trauma Emerg Surg. 2022; 48: 293-8. doi: 10.1007/s00068-020-01596-7.</mixed-citation><mixed-citation xml:lang="en">Kruse M, Mohammed J, Sayed-Noor A, et al. Peri-implant femoral fractures in hip fracture patients treated with osteosynthesis: a retrospective cohort study of 1965 patients. Eur J Trauma Emerg Surg. 2022; 48: 293-8. doi: 10.1007/s00068-020-01596-7.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Halonen LM, Stenroos A, Vasara H, Kosola J. Peri-implant fracture: a rare complication after intramedullary fixation of trochanteric femoral fracture. Arch Orthop Trauma Surg. 2022; 142: 3715-20. doi: 10.1007/s00402-021-04193-4.</mixed-citation><mixed-citation xml:lang="en">Halonen LM, Stenroos A, Vasara H, Kosola J. Peri-implant fracture: a rare complication after intramedullary fixation of trochanteric femoral fracture. Arch Orthop Trauma Surg. 2022; 142: 3715-20. doi: 10.1007/s00402-021-04193-4.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Park K-C, Lim S-J, Song YS, Hwang K-T. Factors affecting peri-implant fracture following locking plate for osteoporotic distal femur fractures. Orthop Traumatol Surg Res. 2017; 103: 1201-4. doi: 10.1016/j.otsr.2017.08.008.</mixed-citation><mixed-citation xml:lang="en">Park K-C, Lim S-J, Song YS, Hwang K-T. Factors affecting peri-implant fracture following locking plate for osteoporotic distal femur fractures. Orthop Traumatol Surg Res. 2017; 103: 1201-4. doi: 10.1016/j.otsr.2017.08.008.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Müller F, Galler M, Zellner M, Bäuml C, et al. Peri-implant femoral fractures: the risk is more than three times higher within PFN compared with DHS. Injury. 2016; 47: 2189-94. doi: 10.1016/j.injury.2016.04.042.</mixed-citation><mixed-citation xml:lang="en">Müller F, Galler M, Zellner M, Bäuml C, et al. Peri-implant femoral fractures: the risk is more than three times higher within PFN compared with DHS. Injury. 2016; 47: 2189-94. doi: 10.1016/j.injury.2016.04.042.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Cacciola G, Mancino F, De Meo F, Bruschetta A, et al. Current Reconstruction Options in Periprosthetic Fractures Around the Knee. Geriatric Orthopaedic Surgery &amp; Rehabilitation. 2021; 12. doi: 10.1177/21514593211023996.</mixed-citation><mixed-citation xml:lang="en">Cacciola G, Mancino F, De Meo F, Bruschetta A, et al. Current Reconstruction Options in Periprosthetic Fractures Around the Knee. Geriatric Orthopaedic Surgery &amp; Rehabilitation. 2021; 12. doi: 10.1177/21514593211023996.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Ballhause TM, Gessler R, Priemel MH, Frosch K-H, et al. Osteosynthesis of a Multifragment Femoral Shaft Fracture and Peri-Implant Refracture in an 83-Year-Old Patient with Osteogenesis Imperfecta, Case Reports in Orthopedics. 2020; 8887644: 7. doi: 10.1155/2020/8887644.</mixed-citation><mixed-citation xml:lang="en">Ballhause TM, Gessler R, Priemel MH, Frosch K-H, et al. Osteosynthesis of a Multifragment Femoral Shaft Fracture and Peri-Implant Refracture in an 83-Year-Old Patient with Osteogenesis Imperfecta, Case Reports in Orthopedics. 2020; 8887644: 7. doi: 10.1155/2020/8887644.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Teng L, Xiao Y, Zhong G. Zhongguo Xiufu Chongjian Waike Zazhi. Chinese Journal of Reparative and Reconstructive Surgery. 2021; 35(3): 312-317. doi: 10.7507/1002-1892.202010011.</mixed-citation><mixed-citation xml:lang="en">Teng L, Xiao Y, Zhong G. Zhongguo Xiufu Chongjian Waike Zazhi. Chinese Journal of Reparative and Reconstructive Surgery. 2021; 35(3): 312-317. doi: 10.7507/1002-1892.202010011.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Halonen LM, Stenroos A, Vasara H, et al. Peri-implant fracture: a rare complication after intramedullary fixation of trochanteric femoral fracture. Arch Orthop Trauma Surg. 2022; 142: 3715-3720. doi: 10.1007/s00402-021-04193-4.</mixed-citation><mixed-citation xml:lang="en">Halonen LM, Stenroos A, Vasara H, et al. Peri-implant fracture: a rare complication after intramedullary fixation of trochanteric femoral fracture. Arch Orthop Trauma Surg. 2022; 142: 3715-3720. doi: 10.1007/s00402-021-04193-4.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Sakellariou E, Galanis A, Vavourakis M, et al. Periimplant proximal femur fracture in a poliomyelitis survivor: A surgical and medical challenge. Clin Case Rep. 2023; 11: e7465. doi:10.1002/ccr3.7465.</mixed-citation><mixed-citation xml:lang="en">Sakellariou E, Galanis A, Vavourakis M, et al. Periimplant proximal femur fracture in a poliomyelitis survivor: A surgical and medical challenge. Clin Case Rep. 2023; 11: e7465. doi:10.1002/ccr3.7465.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Leadbetter Guy W. Clinical Orthopaedics and Related Research (1976-2007). 2002; 399: 4-8.</mixed-citation><mixed-citation xml:lang="en">Leadbetter Guy W. Clinical Orthopaedics and Related Research (1976-2007). 2002; 399: 4-8.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
