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<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">mrj</journal-id><journal-title-group><journal-title xml:lang="ru">Современная ревматология</journal-title><trans-title-group xml:lang="en"><trans-title>Modern Rheumatology Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1996-7012</issn><issn pub-type="epub">2310-158X</issn><publisher><publisher-name>IMA-PRESS, LLC</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.14412/1996-7012-2021-1-94-97</article-id><article-id custom-type="elpub" pub-id-type="custom">mrj-1106</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>CLINICAL OBSERVATIONS</subject></subj-group></article-categories><title-group><article-title>Avascular Necrosis of the Foot and Ankle in a Patient with Systemic Sclerosis: A Case Based Review</article-title><trans-title-group xml:lang="en"><trans-title>Avascular Necrosis of the Foot and Ankle in a Patient with Systemic Sclerosis: A Case Based Review</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7708-4167</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Wastyn</surname><given-names>H.</given-names></name><name name-style="western" xml:lang="en"><surname>Wastyn</surname><given-names>H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Heline Wastyn</p><p>Medical Student, Faculty of Medicine</p><p>Preshoekstraat 33, 8930 Lauwe, Belgium</p></bio><bio xml:lang="en"><p>Heline Wastyn</p><p>Medical Student, Faculty of Medicine</p><p>Preshoekstraat 33, 8930 Lauwe, Belgium</p></bio><email xlink:type="simple">heline.wastyn@student.kuleuven.be</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>Leys</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Leys</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Mathias Leys, M.D.   </p><p>Department of Pneumology</p><p> </p></bio><bio xml:lang="en"><p>Mathias Leys, M.D. </p><p>Department of Pneumology</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>Michels</surname><given-names>F.</given-names></name><name name-style="western" xml:lang="en"><surname>Michels</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Frederick Michels, M.D.</p><p>Department of Orthopedics and Traumatology</p></bio><bio xml:lang="en"><p>Frederick Michels, M.D.</p><p>Department of Pneumology</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>Deleu</surname><given-names>А.-L.</given-names></name><name name-style="western" xml:lang="en"><surname>Deleu</surname><given-names>A.-L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Anne-Leen Deleu, M.D.</p><p>Resident in Department of Nuclear Medicine</p></bio><bio xml:lang="en"><p>Anne-Leen Deleu, M.D.</p><p>Resident in Department of Nuclear Medicine</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>Vereecke</surname><given-names>Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Vereecke</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Evie Vereecke, prof.</p><p>Department of Development and Regeneration</p></bio><bio xml:lang="en"><p>Evie Vereecke, prof.</p><p>Department of Development and Regeneration</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>Matricali</surname><given-names>G.</given-names></name><name name-style="western" xml:lang="en"><surname>Matricali</surname><given-names>G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Giovanni Matricali, prof., M.D., PhD</p><p>Department of Orthopedic Surgery University Hospitals Leuven</p><p>Department of Development and Regeneration, KU Leuven</p><p>Leuven, Heverlee</p></bio><bio xml:lang="en"><p>Giovanni Matricali, prof., M.D., PhD</p><p>Department of Orthopedic Surgery University Hospitals Leuven</p><p>Department of Development and Regeneration, KU Leuven</p><p>Leuven, Heverlee</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Clockaerts</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Clockaerts</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Stefan Clockaerts, M.D.</p><p>Foot and Ankle Unit, Department of Orthopedics and Traumatology, AZ Sint-Maarten Mechelen</p><p>Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, KU Leuven</p></bio><bio xml:lang="en"><p>Stefan Clockaerts, M.D.</p><p>Foot and Ankle Unit, Department of Orthopedics and Traumatology, AZ Sint-Maarten Mechelen</p><p>Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, KU Leuven</p></bio><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>KU Leuven</institution><country>Бельгия</country></aff><aff xml:lang="en"><institution>KU Leuven</institution><country>Belgium</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>AZ Groeninge Kortrijk</institution><country>Бельгия</country></aff><aff xml:lang="en"><institution>AZ Groeninge Kortrijk</institution><country>Belgium</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Kulak Kortrijk Campus</institution><country>Бельгия</country></aff><aff xml:lang="en"><institution>Kulak Kortrijk Campus</institution><country>Belgium</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>University Hospitals Leuven;&#13;
KU Leuven;&#13;
Institute of Orthopaedic Research &amp; Training (IORT)</institution><country>Бельгия</country></aff><aff xml:lang="en"><institution>University Hospitals Leuven;&#13;
KU Leuven;&#13;
Institute of Orthopaedic Research &amp; Training (IORT)</institution><country>Belgium</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>AZ Sint-Maarten Mechelen;&#13;
KU Leuven</institution><country>Бельгия</country></aff><aff xml:lang="en"><institution>AZ Sint-Maarten Mechelen;&#13;
KU Leuven</institution><country>Belgium</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>02</month><year>2021</year></pub-date><volume>15</volume><issue>1</issue><fpage>94</fpage><lpage>97</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Wastyn H., Leys М., Michels F., Deleu А., Vereecke Е., Matricali G., Clockaerts S., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Wastyn H., Leys М., Michels F., Deleu А., Vereecke Е., Matricali G., Clockaerts S.</copyright-holder><copyright-holder xml:lang="en">Wastyn H., Leys M., Michels F., Deleu A., Vereecke E., Matricali G., Clockaerts S.</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://mrj.ima-press.net/mrj/article/view/1106">https://mrj.ima-press.net/mrj/article/view/1106</self-uri><abstract><p>This review describes a case of atraumatic avascular necrosis in the foot and ankle in a patient with systemic sclerosis who did not receive corticosteroid therapy. Both avascular necrosis and systemic sclerosis are uncommon disease entities. This case demonstrates that vasculitis and secondary vasoconstriction in the pathogenesis of systemic sclerosis are important risk factors for the development of avascular necrosis of the foot and ankle. Therefore, if these patients develop chronic foot and ankle pain, avascular necrosis should be included in the differential diagnosis, even if they do not receive corticosteroids. For the diagnosis and follow-up of avascular necrosis MRI remains the gold standard. Thus, MRI should be used to diagnose avascular necrosis in an early stage. Level of Clinical Evidence: 4.</p></abstract><trans-abstract xml:lang="en"><p>This review describes a case of atraumatic avascular necrosis in the foot and ankle in a patient with systemic sclerosis who did not receive corticosteroid therapy. Both avascular necrosis and systemic sclerosis are uncommon disease entities. This case demonstrates that vasculitis and secondary vasoconstriction in the pathogenesis of systemic sclerosis are important risk factors for the development of avascular necrosis of the foot and ankle. Therefore, if these patients develop chronic foot and ankle pain, avascular necrosis should be included in the differential diagnosis, even if they do not receive corticosteroids. For the diagnosis and follow-up of avascular necrosis MRI remains the gold standard. Thus, MRI should be used to diagnose avascular necrosis in an early stage. Level of Clinical Evidence: 4.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Osteonecrosis</kwd><kwd>Scleroderma</kwd><kwd>Systemic</kwd><kwd>Tomography</kwd><kwd>Magnetic Resonance Imaging</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Osteonecrosis</kwd><kwd>Scleroderma</kwd><kwd>Systemic</kwd><kwd>Tomography</kwd><kwd>Magnetic Resonance Imaging</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">Ranque B, Mouthon L. Geoepidemiology of systemic sclerosis. Autoimmun Rev. 2010 Mar;9(5):A311-8. doi: 10.1016/j.autrev.2009.11.003. Epub 2009 Nov 10.</mixed-citation><mixed-citation xml:lang="en">Ranque B, Mouthon L. Geoepidemiology of systemic sclerosis. Autoimmun Rev. 2010 Mar;9(5):A311-8. doi: 10.1016/j.autrev.2009.11.003. 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