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<meta name="DC.Title" content="Kyphoplasty and Vertebroplasty Produce the Same Degree of Height Restoration" />
<meta name="DC.Identifier" content="10.3174/ajnr.A1442" />
<meta name="DC.Date" content="2009-04-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="Copyright © American Society of Neuroradiology." />
<meta name="DC.AccessRights" content="open-access" />
<meta name="DC.Description" content="BACKGROUND AND PURPOSE: There are few comparative studies regarding morphologic changes after kyphoplasty and vertebroplasty. The purpose of this study was to compare restoration of vertebral body height and wedge angle and cement leakage with kyphoplasty and vertebroplasty in osteoporotic compression fractures.

MATERIALS AND METHODS: Forty patients (57 vertebrae) were treated with kyphoplasty, and 66 patients (124 vertebrae) were treated with vertebroplasty. Cement leakage into the disk space and paravertebral soft tissues or veins was analyzed on immediate postoperative CT scans. The height and wedge angle were measured before and after treatment and analyzed with the Mann-Whitney U test and χ2 test.

RESULTS: Kyphoplasty and vertebroplasty both improved vertebral body height and the wedge angles (P &lt; .05). However, these differences were not statistically significant when the 2 techniques were compared ( P &gt; .05). There were 18% of the kyphoplasty group and 49% of the vertebroplasty group that showed cement leakage into the paravertebral soft tissues or veins ( P &lt; .01). Cement leakage into the disk space occurred in 12% of the kyphoplasty group and in 25% of the vertebroplasty group ( P &lt; .01). However, no complications related to cement leakage were noted.

CONCLUSIONS: Both kyphoplasty and vertebroplasty achieved the same degree of height restoration and improvement of the wedge angle. Kyphoplasty resulted in less cement leakage into the disk space and paravertebral soft tissues or veins than vertebroplasty." />
<meta name="DC.Contributor" content="A. Hiwatashi" />
<meta name="DC.Contributor" content="P.-L.A. Westesson" />
<meta name="DC.Contributor" content="T. Yoshiura" />
<meta name="DC.Contributor" content="T. Noguchi" />
<meta name="DC.Contributor" content="O. Togao" />
<meta name="DC.Contributor" content="K. Yamashita" />
<meta name="DC.Contributor" content="H. Kamano" />
<meta name="DC.Contributor" content="H. Honda" />
<meta name="article:published_time" content="2009-04-01" />
<meta name="article:section" content="SPINE" />
<meta name="citation_title" content="Kyphoplasty and Vertebroplasty Produce the Same Degree of Height Restoration" />
<meta name="citation_abstract" lang="en" content="&lt;p&gt;&lt;b&gt;BACKGROUND AND PURPOSE:&lt;/b&gt; There are few comparative studies regarding morphologic changes after kyphoplasty and vertebroplasty. The purpose of this study was to compare restoration of vertebral body height and wedge angle and cement leakage with kyphoplasty and vertebroplasty in osteoporotic compression fractures.&lt;/p&gt;&lt;p&gt;&lt;b&gt;MATERIALS AND METHODS:&lt;/b&gt; Forty patients (57 vertebrae) were treated with kyphoplasty, and 66 patients (124 vertebrae) were treated with vertebroplasty. Cement leakage into the disk space and paravertebral soft tissues or veins was analyzed on immediate postoperative CT scans. The height and wedge angle were measured before and after treatment and analyzed with the Mann-Whitney &lt;i&gt;U&lt;/i&gt; test and χ&lt;sup&gt;2&lt;/sup&gt; test.&lt;/p&gt;&lt;p&gt;&lt;b&gt;RESULTS:&lt;/b&gt; Kyphoplasty and vertebroplasty both improved vertebral body height and the wedge angles &lt;i&gt;(P&lt;/i&gt; &amp;lt; .05). However, these differences were not statistically significant when the 2 techniques were compared (&lt;i&gt;P&lt;/i&gt; &amp;gt; .05). There were 18% of the kyphoplasty group and 49% of the vertebroplasty group that showed cement leakage into the paravertebral soft tissues or veins (&lt;i&gt;P&lt;/i&gt; &amp;lt; .01). Cement leakage into the disk space occurred in 12% of the kyphoplasty group and in 25% of the vertebroplasty group (&lt;i&gt;P&lt;/i&gt; &amp;lt; .01). However, no complications related to cement leakage were noted.&lt;/p&gt;&lt;p&gt;&lt;b&gt;CONCLUSIONS:&lt;/b&gt; Both kyphoplasty and vertebroplasty achieved the same degree of height restoration and improvement of the wedge angle. Kyphoplasty resulted in less cement leakage into the disk space and paravertebral soft tissues or veins than vertebroplasty.&lt;/p&gt;" />
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<meta name="citation_publication_date" content="2009/04/01" />
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<meta name="twitter:title" content="Kyphoplasty and Vertebroplasty Produce the Same Degree of Height Restoration" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: There are few comparative studies regarding morphologic changes after kyphoplasty and vertebroplasty. The purpose of this study was to compare restoration of vertebral body height and wedge angle and cement leakage with kyphoplasty and vertebroplasty in osteoporotic compression fractures.

MATERIALS AND METHODS: Forty patients (57 vertebrae) were treated with kyphoplasty, and 66 patients (124 vertebrae) were treated with vertebroplasty. Cement leakage into the disk space and paravertebral soft tissues or veins was analyzed on immediate postoperative CT scans. The height and wedge angle were measured before and after treatment and analyzed with the Mann-Whitney U test and χ2 test.

RESULTS: Kyphoplasty and vertebroplasty both improved vertebral body height and the wedge angles (P &lt; .05). However, these differences were not statistically significant when the 2 techniques were compared ( P &gt; .05). There were 18% of the kyphoplasty group and 49% of the vertebroplasty group that showed cement leakage into the paravertebral soft tissues or veins ( P &lt; .01). Cement leakage into the disk space occurred in 12% of the kyphoplasty group and in 25% of the vertebroplasty group ( P &lt; .01). However, no complications related to cement leakage were noted.

CONCLUSIONS: Both kyphoplasty and vertebroplasty achieved the same degree of height restoration and improvement of the wedge angle. Kyphoplasty resulted in less cement leakage into the disk space and paravertebral soft tissues or veins than vertebroplasty." />
<meta name="og-title" property="og:title" content="Kyphoplasty and Vertebroplasty Produce the Same Degree of Height Restoration" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/30/4/669" />
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<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: There are few comparative studies regarding morphologic changes after kyphoplasty and vertebroplasty. The purpose of this study was to compare restoration of vertebral body height and wedge angle and cement leakage with kyphoplasty and vertebroplasty in osteoporotic compression fractures.

MATERIALS AND METHODS: Forty patients (57 vertebrae) were treated with kyphoplasty, and 66 patients (124 vertebrae) were treated with vertebroplasty. Cement leakage into the disk space and paravertebral soft tissues or veins was analyzed on immediate postoperative CT scans. The height and wedge angle were measured before and after treatment and analyzed with the Mann-Whitney U test and χ2 test.

RESULTS: Kyphoplasty and vertebroplasty both improved vertebral body height and the wedge angles (P &lt; .05). However, these differences were not statistically significant when the 2 techniques were compared ( P &gt; .05). There were 18% of the kyphoplasty group and 49% of the vertebroplasty group that showed cement leakage into the paravertebral soft tissues or veins ( P &lt; .01). Cement leakage into the disk space occurred in 12% of the kyphoplasty group and in 25% of the vertebroplasty group ( P &lt; .01). However, no complications related to cement leakage were noted.

CONCLUSIONS: Both kyphoplasty and vertebroplasty achieved the same degree of height restoration and improvement of the wedge angle. Kyphoplasty resulted in less cement leakage into the disk space and paravertebral soft tissues or veins than vertebroplasty." />
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    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">April 2009,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(4) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">669-673; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A1442 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-7665--6697679215" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">A. Hiwatashi </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=A.%2BHiwatashi%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Hiwatashi%20A&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AA.%2BHiwatashi%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">P.-L.A. 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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml" class="section ref-list" id="ref-list-1"><h2>References</h2><ol class="cit-list"><li><a class="rev-xref-ref" href="#xref-ref-1-1" title="View reference 1 in text" id="ref-1">↵</a><div class="cit ref-cit ref-other" id="cit-30.4.669.1"><div class="cit-metadata"><cite>Jensen ME, Evans AJ, Mathis JM, et al. <strong>Percutaneous polymethylmethacrylate vertebroplasty in the treatment of osteoporotic vertebral body compression fractures: technical aspects.</strong> <span class="cit-source">AJNR Am J Neuroradiol</span> <span class="cit-pub-date">1997</span>;<span class="cit-vol">18</span>:<span class="cit-fpage">1897</span>–904</cite></div><div class="cit-extra"><a 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href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiRlVMTCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo5OiIyNC84LzE2OTciO3M6NDoiYXRvbSI7czoxOToiL2FqbnIvMzAvNC82NjkuYXRvbSI7fXM6ODoiZnJhZ21lbnQiO3M6MDoiIjt9" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><div class="cit ref-cit ref-other no-rev-xref" id="cit-30.4.669.4"><div class="cit-metadata"><cite>McGraw JK, Cardella J, Barr JD, et al. <strong>Society of Interventional Radiology quality improvement guidelines for percutaneous vertebroplasty.</strong> <span class="cit-source">J Vasc Interv Radiol</span> <span class="cit-pub-date">2003</span>;<span class="cit-vol">14</span>:<span class="cit-fpage">S311</span>–15</cite></div><div class="cit-extra"><a 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follow-up of vertebral osteoporotic fractures treated by percutaneous vertebroplasty.</strong> <span class="cit-source">Clin Rheumatol</span> <span class="cit-pub-date">2004</span>;<span class="cit-vol">23</span>:<span class="cit-fpage">310</span>–17</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=15293091&amp;link_type=MED&amp;atom=%2Fajnr%2F30%2F4%2F669.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a><a href="/lookup/external-ref?access_num=000223023900005&amp;link_type=ISI" class="cit-ref-sprinkles cit-ref-sprinkles-newisilink cit-ref-sprinkles-webofscience"><span>Web of Science</span></a></div></div></li><li><div class="cit ref-cit ref-other no-rev-xref" id="cit-30.4.669.8"><div class="cit-metadata"><cite>Zoarski GH, Snow P, Olan WJ, et al. <strong>Percutaneous vertebroplasty for osteoporotic compression fractures: quantitative prospective evaluation of long-term outcomes.</strong> <span class="cit-source">J Vasc Interv Radiol</span> <span class="cit-pub-date">2002</span>;<span class="cit-vol">13</span>:<span class="cit-fpage">139</span>–48</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=11830619&amp;link_type=MED&amp;atom=%2Fajnr%2F30%2F4%2F669.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a><a href="/lookup/external-ref?access_num=000173835200003&amp;link_type=ISI" class="cit-ref-sprinkles cit-ref-sprinkles-newisilink cit-ref-sprinkles-webofscience"><span>Web of Science</span></a></div></div></li><li><div class="cit ref-cit ref-other no-rev-xref" id="cit-30.4.669.9" data-doi="10.1097/01.brs.0000229254.89952.6b"><div class="cit-metadata"><cite>Hulme PA, Krebs J, Ferguson SJ, et al. <strong>Vertebroplasty and kyphoplasty: a systematic review of 69 clinical studies.</strong> <span class="cit-source">Spine</span> <span class="cit-pub-date">2006</span>;<span class="cit-vol">31</span>:<span class="cit-fpage">1983</span>–2001</cite></div><div 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Faciszewski T, et al. <strong>The dynamic mobility of vertebral compression fractures.</strong> <span class="cit-source">J Bone Miner Res</span> <span class="cit-pub-date">2003</span>;<span class="cit-vol">18</span>:<span class="cit-fpage">24</span>–29</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=10.1359/jbmr.2003.18.1.24&amp;link_type=DOI" class="cit-ref-sprinkles cit-ref-sprinkles-doi cit-ref-sprinkles-crossref"><span>CrossRef</span></a><a href="/lookup/external-ref?access_num=12510802&amp;link_type=MED&amp;atom=%2Fajnr%2F30%2F4%2F669.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a><a href="/lookup/external-ref?access_num=000180015500005&amp;link_type=ISI" class="cit-ref-sprinkles cit-ref-sprinkles-newisilink cit-ref-sprinkles-webofscience"><span>Web of Science</span></a></div></div></li><li><div class="cit ref-cit ref-other no-rev-xref" id="cit-30.4.669.12"><div class="cit-metadata"><cite>Hiwatashi A, Moritani T, Numaguchi Y, et al. <strong>Increase in vertebral body height after vertebroplasty.</strong> <span class="cit-source">AJNR Am J Neuroradiol</span> <span class="cit-pub-date">2003</span>;<span class="cit-vol">24</span>:<span class="cit-fpage">185</span>–89</cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo4OiIyNC8yLzE4NSI7czo0OiJhdG9tIjtzOjE5OiIvYWpuci8zMC80LzY2OS5hdG9tIjt9czo4OiJmcmFnbWVudCI7czowOiIiO30=" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><div class="cit ref-cit ref-other no-rev-xref" id="cit-30.4.669.13"><div class="cit-metadata"><cite>Teng MM, Wei CJ, Wei LC, et al. <strong>Kyphosis correction and height restoration effects of percutaneous vertebroplasty.</strong> <span class="cit-source">AJNR Am J Neuroradiol</span> <span class="cit-pub-date">2003</span>;<span class="cit-vol">24</span>:<span class="cit-fpage">1893</span>–900</cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo5OiIyNC85LzE4OTMiO3M6NDoiYXRvbSI7czoxOToiL2FqbnIvMzAvNC82NjkuYXRvbSI7fXM6ODoiZnJhZ21lbnQiO3M6MDoiIjt9" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-14-1" title="View reference 14 in text" id="ref-14">↵</a><div class="cit ref-cit ref-other" id="cit-30.4.669.14" data-doi="10.1148/radiol.2333030400"><div class="cit-metadata"><cite>Carlier RY, Gordji H, Mompoint DM, et al. <strong>Osteoporotic vertebral collapse: percutaneous vertebroplasty and local kyphosis correction.</strong> <span class="cit-source">Radiology</span> <span class="cit-pub-date">2004</span>;<span class="cit-vol">233</span>:<span class="cit-fpage">891</span>–98</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=10.1148/radiol.2333030400&amp;link_type=DOI" class="cit-ref-sprinkles cit-ref-sprinkles-doi cit-ref-sprinkles-crossref"><span>CrossRef</span></a><a href="/lookup/external-ref?access_num=15486209&amp;link_type=MED&amp;atom=%2Fajnr%2F30%2F4%2F669.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-15-1" title="View reference 15 in text" id="ref-15">↵</a><div class="cit ref-cit ref-other" id="cit-30.4.669.15"><div class="cit-metadata"><cite>Dublin AB, Hartman J, Latchaw RE, et al. <strong>The vertebral body fracture in osteoporosis: restoration of height using percutaneous vertebroplasty.</strong> <span class="cit-source">AJNR Am J Neuroradiol</span> <span class="cit-pub-date">2005</span>;<span class="cit-vol">26</span>:<span class="cit-fpage">489</span>–92</cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czo4OiIyNi8zLzQ4OSI7czo0OiJhdG9tIjtzOjE5OiIvYWpuci8zMC80LzY2OS5hdG9tIjt9czo4OiJmcmFnbWVudCI7czowOiIiO30=" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full 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class="cit-pub-date">2008</span>;<span class="cit-vol">8</span>:<span class="cit-fpage">488</span>–97</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=10.1016/j.spinee.2007.04.004&amp;link_type=DOI" class="cit-ref-sprinkles cit-ref-sprinkles-doi cit-ref-sprinkles-crossref"><span>CrossRef</span></a><a href="/lookup/external-ref?access_num=17588820&amp;link_type=MED&amp;atom=%2Fajnr%2F30%2F4%2F669.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a><a href="/lookup/external-ref?access_num=000256181300010&amp;link_type=ISI" class="cit-ref-sprinkles cit-ref-sprinkles-newisilink cit-ref-sprinkles-webofscience"><span>Web of Science</span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-40-1" title="View reference 40 in text" id="ref-40">↵</a><div class="cit ref-cit ref-other" id="cit-30.4.669.40"><div class="cit-metadata"><cite>Ryu KS, Park CK, Kim MC, et al. <strong>Dose-dependent epidural leakage of 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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 30</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 4 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">April 2009 </div></div>
      
      
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    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Hiwatashi</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">P.-L.A.</span> <span class="nlm-surname">Westesson</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Yoshiura</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Noguchi</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">O.</span> <span class="nlm-surname">Togao</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">K.</span> <span class="nlm-surname">Yamashita</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">H.</span> <span class="nlm-surname">Kamano</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">H.</span> <span class="nlm-surname">Honda</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-oa-ind highwire-cite-metadata"><i class="highwire-oa-indicator"></i> </span><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Apr 2009, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(4) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">669-673; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A1442 </span></div>
  
  
  
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      <div class="highwire-cite-title">Kyphoplasty and Vertebroplasty Produce the Same Degree of Height Restoration</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">A.</span> <span class="nlm-surname">Hiwatashi</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">P.-L.A.</span> <span class="nlm-surname">Westesson</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Yoshiura</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">T.</span> <span class="nlm-surname">Noguchi</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">O.</span> <span class="nlm-surname">Togao</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">K.</span> <span class="nlm-surname">Yamashita</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">H.</span> <span class="nlm-surname">Kamano</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">H.</span> <span class="nlm-surname">Honda</span></span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-oa-ind highwire-cite-metadata"><i class="highwire-oa-indicator"></i> </span><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">Apr 2009, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(4) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">669-673; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A1442 </span></div>
  
  
  
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