<?xml version="1.0" encoding="ISO-8859-1"?><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">
<front>
<journal-meta>
<journal-id>1134-8046</journal-id>
<journal-title><![CDATA[Revista de la Sociedad Española del Dolor]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Soc. Esp. Dolor]]></abbrev-journal-title>
<issn>1134-8046</issn>
<publisher>
<publisher-name><![CDATA[Inspira Network Group, S.L ]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1134-80462021000100080</article-id>
<article-id pub-id-type="doi">10.20986/resed.2021.3858/2020</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Plasma rico en plaquetas y células madre mesenquimales intrarticulares en artrosis]]></article-title>
<article-title xml:lang="en"><![CDATA[Platelet rich plasma and intra-articular mesenchymal stem cells in osteoarthritis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tornero-Tornero]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández Rodríguez]]></surname>
<given-names><![CDATA[LE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico Universitario de Valencia Servicio Anestesiología Unidad Dolor]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>España</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Clínico Universitario Virgen de la Arrixaca Servicio Anestesiología Unidad Dolor]]></institution>
<addr-line><![CDATA[Murcia ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<fpage>80</fpage>
<lpage>84</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1134-80462021000100080&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1134-80462021000100080&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1134-80462021000100080&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La osteoartritis es un trastorno degenerativo que progresa lentamente y cada vez es más frecuente en nuestra población. Hasta hace escasos años se ha tratado con analgésicos orales, inyecciones intrarticulares con corticoides, toxina botulínica y ácido hialurónico e incluso con recambio articular quirúrgico en los casos más avanzados. La medicina regenerativa es la gran esperanza en el tratamiento de esta patología para mejorar la calidad de vida de los pacientes y tratar de enlentecer su progresión. Existen dos tipos de terapias regenerativas de inyección intrarticular que debemos de diferenciar: el plasma rico en plaquetas (PRP) y las células madre (MSC), con prometedores resultados. Aunque existe el beneficio potencial de las terapias biológicas actuando directamente en la articulación afectada, son necesarios ensayos clínicos rigurosos y bien diseñados para establecer la seguridad y eficacia de estas terapias.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Osteoarthritis is a degenerative disorder that progresses slowly and is becoming more and more common in our population. Until a few years ago, it has been treated with oral analgesics, intra-articular injections with corticosteroids, botulinum toxin and hyaluronic acid and even with surgical joint replacement in the most advanced cases. Regenerative medicine is the great hope in the treatment of this pathology to improve the quality of life of patients and try to slow down its progression. There are two types of regenerative intra-articular injection therapies that we must differentiate, PRP (Platelet-rich plasma) and MSC (Mesenchymal stem cells) with promising results. Although there is the potential benefit of biological therapies acting directly on the affected joint, rigorous and well-designed clinical trials are necessary to establish the safety and efficacy of these therapies.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Osteoarthritis]]></kwd>
<kwd lng="en"><![CDATA[intra-articular injection]]></kwd>
<kwd lng="en"><![CDATA[platelet-rich plasma]]></kwd>
<kwd lng="en"><![CDATA[stem cells]]></kwd>
<kwd lng="es"><![CDATA[Osteoartritis]]></kwd>
<kwd lng="es"><![CDATA[artrosis]]></kwd>
<kwd lng="es"><![CDATA[inyección intrarticular]]></kwd>
<kwd lng="es"><![CDATA[plasma rico en plaquetas]]></kwd>
<kwd lng="es"><![CDATA[células madre]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[J]]></given-names>
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<name>
<surname><![CDATA[Almeida-Trinidad]]></surname>
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<surname><![CDATA[Guzman-Esquivel]]></surname>
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<article-title xml:lang=""><![CDATA[A phase I-II controlled randomized trial using a promising novel cell-free formulation for articular cartilage regeneration as treatment of severe osteoarthritis of the knee]]></article-title>
<source><![CDATA[Eur J Med Res]]></source>
<year>2018</year>
<volume>23</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>52</page-range></nlm-citation>
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