Reliable results seen with knee extension tests in hamstring injuries

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href="https://web.archive.org/web/20130823032743/http://www.healio.com/orthopedics/sports-medicine/news/online/%7Bd13ae00e-06e5-4de8-95db-b8848319fde6%7D/acl-re-injuries-are-six-times-more-likely-for-athletes-after-acl-reconstruction-and-return-to-sport-">ACL re-injuries are six times more likely for athletes after ACL ...</a></li><li><a href="https://web.archive.org/web/20130823032743/http://www.healio.com/orthopedics/sports-medicine/news/online/%7B9ee875f3-5104-4712-9f65-9aec18109626%7D/changes-in-atrophy-inducing-cytokines-levels-knee-strength-found-after-acl-reconstruction">Changes in atrophy-inducing cytokines levels, knee strength ...</a></li><li><a href="https://web.archive.org/web/20130823032743/http://www.healio.com/orthopedics/sports-medicine/news/online/%7B9742f2ec-493c-4fb4-8513-1005f2975c8e%7D/return-to-sport-seen-in-high-rate-of-competitive-athletes-after-revision-acl-reconstruction-rehab">Return to sport seen in high rate of competitive athletes after ...</a></li></ul></div>  <div class="content"> <h2> Reliable results seen with knee extension tests in hamstring injuries </h2> <h3 class="deck"> <a href="https://web.archive.org/web/20130823032743/http://ajs.sagepub.com/content/41/8/1757.abstract" target="blank">Reurink G. <i>Am J Sports Med</i>. 2013;doi:10.1177/0363546513490650.</a></h3> <p class="main-subtitle"> </p> <ul class="meta-info"> <li> August 20, 2013</li> </ul> <div class="wyContent"> <p>Despite patient-reported pain and discomfort during testing, researchers found in their study that the active and passive knee extension tests can help monitor the prognosis of and recovery from acute hamstring injuries.</p> <p>“The [active knee extension test] AKET and [passive knee extension test] PKET are reliable in acute hamstring injury. Both tests can be reliably used to assess flexibility in injured hamstrings, despite pain and discomfort during testing,” <strong>Gustaaf Reurink, MD,</strong> and colleagues wrote in the study.</p> <p>They identified 50 consecutive athletes with acute hamstring injuries through MRI, according to the abstract. Two clinicians performed the AKET and PKET, respectively, for each participant within 5 days of injury. The researchers determined the intraclass correlation coefficient (ICC), the standard error of measurement (SEM) and the minimal detectable difference (MDD) per participant.</p> <p>Overall, Reurink and colleagues found good intertester reliability for both tests in this population. The ICC was 0.89 for the AKET and the ICC was 0.77 for the PKET. The SEM for the AKET was 5.3° and the SEM for the PKET was 7.3°. Further, the MDD was 15° with the AKET and 21° with the PKET, according to the abstract. </p> <p><strong>Disclosure:</strong> The authors received funding from Arthrex Medizinische Instrumente GmbH and the Royal Dutch Football Association for this study.</p> </div>  <div class="fig left"> <p class="figcaption"> </p> </div> <div class="wyPagination">   </div>  <div class="follow"> <img src="/web/20130823032743im_/http://www.healio.com/~/media/Images/News/FollowUs.jpg" id="layout_0_maincontent_1_SocialFollow_socialfollow" name="socialfollow" alt="Follow us" usemap="#followus" border="0"/> <map id="followus" name="followus"> <area id="layout_0_maincontent_1_SocialFollow_followfb" shape="rect" coords="51,5,5,51" target="_blank" href="https://web.archive.org/web/20130823032743/https://www.facebook.com/OrthopedicsToday" alt="Follow us on Facebook"></area> <area id="layout_0_maincontent_1_SocialFollow_followtw" shape="rect" coords="241,3,281,50" target="_blank" href="https://web.archive.org/web/20130823032743/https://twitter.com/orthotoday" alt="Follow us on Twitter"></area> </map> </div> </div>  <div class="social-links"> <div class="fb-like" data-send="false" data-width="300" data-show-faces="true" data-action="recommend"></div> <ul class="share"> <li><a href="javascript:void(0)" id="twitter" target="_new">Tweet</a></li> <li><a href="javascript:void(0)" id="facebook" target="_new">Share</a></li> <li class="linkedin"><a href="javascript:void(0)" id="linkedin">Link</a></li> <li><span class="db-wrapper"><span class="g-plusone" data-size="tall" data-annotation="none"></span></span></li> <li><a href="javascript:void(0)" id="email">Email</a></li> <li class="last"><a href="javascript:void(0)" id="print">Print</a></li> </ul> </div>  <div id="respond"> <h4> Comments</h4> <script language="javascript" type="text/javascript"> var idcomments_acct = 'aa6ff53f9870e40f92f83e1b5df3cddf'; var idcomments_post_id = '{FA75A00E-ABFC-455C-9D35-851E875F0294}'; var idcomments_post_url; </script> <span id="IDCommentsPostTitle" style="display: none"></span> <script type="text/javascript" src="https://web.archive.org/web/20130823032743js_/http://www.intensedebate.com/js/genericCommentWrapperV2.js"></script> <p class="comment-notes"> Healio is intended for health care provider use and all comments will be posted at the discretion of the editors. 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Reliable results seen with knee extension tests in hamstring injuries | Orthopedics