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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="other" 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">1366</article-id><article-id pub-id-type="doi">10.21823/2311-2905-2020-26-3-182-192</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Reviews</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Обзоры</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Reviews</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Femoroacetabular Impingement: A Natural History</article-title><trans-title-group xml:lang="ru"><trans-title>Фемороацетабулярный импинджмент: естественная история</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7500-9219</contrib-id><name-alternatives><name xml:lang="en"><surname>Sereda</surname><given-names>A. P.</given-names></name><name xml:lang="ru"><surname>Середа</surname><given-names>А. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Andrey P. Sereda — Dr. Sci. (Med.), Deputy Head</p><p>Moscow</p></bio><bio xml:lang="ru"><p>Середа Андрей Петрович —  д-р мед. наук, заместитель руководителя Федерального медико-биологического агентства России</p><p>Москва</p><p> </p></bio><email>drsereda@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Medical Biological Agency</institution></aff><aff><institution xml:lang="ru">Федеральное медико-биологическое агентство России</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-09-29" publication-format="electronic"><day>29</day><month>09</month><year>2020</year></pub-date><volume>26</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>182</fpage><lpage>192</lpage><history><date date-type="received" iso-8601-date="2020-01-16"><day>16</day><month>01</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-02-19"><day>19</day><month>02</month><year>2020</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journal.rniito.org/jour/article/view/1366">https://journal.rniito.org/jour/article/view/1366</self-uri><abstract xml:lang="en"><p>This review article is devoted to the natural course of hip femoroacetabular impingement (FAI). The evolution of the understanding and views of surgeons on primary (idiopathic) arthrosis are considered. It is noted that nowadays, the primary arthrosis in fact almost always arises from anatomical variations. Among those are cam- and pincer-deformities, leading to impingement. In most of the major works, a reliable causal relationship of cam-FAI with arthrosis has been proven. Moreover, cam-FAI also carries the risk of impending arthroplasty. The association of pincer-FAI with arthrosis has been controversial. The course of FAI arthrosis, most likely, is not as aggressive as, for example, dysplastic arthrosis, and less often requires arthroplastics. Since cam-FAI is a reliable risk factor for arthrosis and arthroplasty, it could be assumed that timely surgical correction of FAI would stop or slow down arthrosis and avoid arthroplasty. However, at present, this assumption has not been proven, therefore, there is no reason to assert that surgery for FAI in any way affects its natural history in the form of severe arthrosis following by arthroplasty.</p></abstract><trans-abstract xml:lang="ru"><p>Эта обзорная статья посвящена естественной истории течения фемороацетабулярного импинджмента (ФАИ) тазобедренного сустава. Рассматривается эволюция пониманий и взглядов хирургов на первичный (идиопатический) артроз и отмечается, что на современном этапе первичный артроз на самом деле практически всегда имеет те или иные причины своего развития в виде анатомических вариаций, среди которых — cam- и pincer-деформации, приводящие к импинджменту. Оказалось, что в большинстве крупных работ была доказана достоверная причинно-следственная связь cam-ФАИ не только с артрозом, но и с риском эндопротезирования. Связь pincer-ФАИ с артрозом оказалась неоднозначной. При этом течение ФАИ-артроза, по всей видимости, оказывается не таким агрессивным, как, например, диспластического артроза, и реже требует эндопротезирования. Поскольку cam-ФАИ является достоверным фактором риска артроза и эндопротезирования, то можно было бы предположить, что своевременная хирургическая коррекция ФАИ позволит остановить или замедлить артроз и избежать эндопротезирования. Однако в настоящее время это предположение не доказано, соответственно, нет оснований утверждать, что операция по поводу ФАИ как-либо влияет на его естественную историю в виде конечного исхода тяжелого артроза и эндопротезирования.</p></trans-abstract><kwd-group xml:lang="en"><kwd>femoroacetabular impingement</kwd><kwd>cam-FAI</kwd><kwd>pincer-FAI</kwd><kwd>coxarthrosis</kwd><kwd>hip arthroplasty</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>фемороацетабулярный импинджмент</kwd><kwd>cam-ФАИ</kwd><kwd>pincer-ФАИ</kwd><kwd>коксартроз</kwd><kwd>эндопротезирование тазобедренного сустава</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1. Smith-Petersen M.N. The classic: Treatment of malum coxae senilis, old slipped upper femoral epiphysis, intrapelvic protrusion of the acetabulum, and coxa plana by means of acetabuloplasty. 1936. 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