<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
<!DOCTYPE GmsArticle SYSTEM "http://www.egms.de/dtd/2.0.34/GmsArticle.dtd">
<GmsArticle xmlns:xlink="http://www.w3.org/1999/xlink">
  <MetaData>
    <Identifier>26dkou084</Identifier>
    <IdentifierDoi>10.3205/26dkou084</IdentifierDoi>
    <IdentifierUrn>urn:nbn:de:0183-26dkou0841</IdentifierUrn>
    <ArticleType>Meeting Abstract</ArticleType>
    <TitleGroup>
      <Title language="en">Arthroscopically assisted transtibial reduction of apple-bite fractures with ACL injury: No significant difference in outcomes at 4-year follow-up</Title>
    </TitleGroup>
    <CreatorList>
      <Creator>
        <PersonNames>
          <Lastname>Swietek</Lastname>
          <LastnameHeading>Swietek</LastnameHeading>
          <Firstname>Oliver</Firstname>
          <Initials>O</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Klinikum Dortmund, Universit&#228;t Witten&#47;Herdecke, Dortmund, Deutschland</Affiliation>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Universit&#228;tsklinikum M&#252;nster, M&#252;nster, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="yes">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Korthaus</Lastname>
          <LastnameHeading>Korthaus</LastnameHeading>
          <Firstname>Alexander</Firstname>
          <Initials>A</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Raschke</Lastname>
          <LastnameHeading>Raschke</LastnameHeading>
          <Firstname>Michael Johannes</Firstname>
          <Initials>MJ</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Universit&#228;tsklinikum M&#252;nster, M&#252;nster, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Horst</Lastname>
          <LastnameHeading>Horst</LastnameHeading>
          <Firstname>Klemens</Firstname>
          <Initials>K</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Universit&#228;tsklinikum M&#252;nster, M&#252;nster, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Frosch</Lastname>
          <LastnameHeading>Frosch</LastnameHeading>
          <Firstname>Karl-Heinz</Firstname>
          <Initials>KH</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
          <Affiliation>Klinik f&#252;r Unfallchirurgie, Orthop&#228;die und Sporttraumatologie, BG Klinikum Hamburg, Hamburg, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Berninger</Lastname>
          <LastnameHeading>Berninger</LastnameHeading>
          <Firstname>Markus T.</Firstname>
          <Initials>MT</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Herbst</Lastname>
          <LastnameHeading>Herbst</LastnameHeading>
          <Firstname>Elmar</Firstname>
          <Initials>E</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Universit&#228;tsklinikum M&#252;nster, M&#252;nster, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Frings</Lastname>
          <LastnameHeading>Frings</LastnameHeading>
          <Firstname>Jannik</Firstname>
          <Initials>J</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
          <Affiliation>Klinik f&#252;r Orthop&#228;die und Traumatologie, Universit&#228;tsklinik Schleswig-Holstein, Campus L&#252;beck, L&#252;beck, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Krause</Lastname>
          <LastnameHeading>Krause</LastnameHeading>
          <Firstname>Matthias</Firstname>
          <Initials>M</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik und Poliklinik f&#252;r Unfallchirurgie und Orthop&#228;die, Universit&#228;tsklinikum Hamburg-Eppendorf, Hamburg, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Kittl</Lastname>
          <LastnameHeading>Kittl</LastnameHeading>
          <Firstname>Christoph</Firstname>
          <Initials>C</Initials>
        </PersonNames>
        <Address>
          <Affiliation>Klinik f&#252;r Unfall-, Hand- und Wiederherstellungschirurgie, Universit&#228;tsklinikum M&#252;nster, M&#252;nster, Deutschland</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
    </CreatorList>
    <PublisherList>
      <Publisher>
        <Corporation>
          <Corporatename>German Medical Science GMS Publishing House</Corporatename>
        </Corporation>
        <Address>D&#252;sseldorf</Address>
      </Publisher>
    </PublisherList>
    <SubjectGroup>
      <SubjectheadingDDB>610</SubjectheadingDDB>
    </SubjectGroup>
    <DatePublishedList>
     <DatePublished>20261020</DatePublished>
    </DatePublishedList>
    <Language>engl</Language>
    <License license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
      <AltText language="en">This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License.</AltText>
      <AltText language="de">Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung).</AltText>
    </License>
    <SourceGroup>
      <Meeting>
        <MeetingId>M0659</MeetingId>
        <MeetingSequence>084</MeetingSequence>
        <MeetingCorporation>Deutsche Gesellschaft f&#252;r Orthop&#228;die und Unfallchirurgie</MeetingCorporation>
        <MeetingCorporation>Deutsche Gesellschaft f&#252;r Orthop&#228;die und Orthop&#228;dische Chirurgie</MeetingCorporation>
        <MeetingCorporation>Deutsche Gesellschaft f&#252;r Unfallchirurgie</MeetingCorporation>
        <MeetingCorporation>Berufsverband f&#252;r Orthop&#228;die und Unfallchirurgie</MeetingCorporation>
        <MeetingName></MeetingName>
        <MeetingTitle>Deutscher Kongress f&#252;r Orthop&#228;die und Unfallchirurgie (DKOU 2026)</MeetingTitle>
        <MeetingSession>Abstracts &#124; Kniefrakturen</MeetingSession>
        <MeetingCity>Berlin</MeetingCity>
        <MeetingDate>
          <DateFrom>20261020</DateFrom>
          <DateTo>20261023</DateTo>
        </MeetingDate>
      </Meeting>
    </SourceGroup>
    <ArticleNo>DKOU26&#95;Abs&#95;2486</ArticleNo>
  </MetaData>
  <OrigData>
    <TextBlock name="Text" linked="yes">
      <MainHeadline>Text</MainHeadline><Pgraph><Mark1>Objectives and questions: </Mark1>Posterolateral tibial impression (&#8216;apple bite&#8217;) fractures (PTIFs) can lead to an increased pivot shift in biomechanical studies after anterior cruciate ligament reconstruction (ACLR) due to reduced lateral meniscus (LM) support. However, given the limited number of available studies, it remains unclear whether reduction of the PTIF is necessary. This study aimed to compare clinical outcomes of nonsurgical versus surgical treatment of PTIFs in patients with concomitant ACL injury at two university hospitals (UH).</Pgraph><Pgraph><Mark1>Material and methods: </Mark1>A retrospective review of patient records and magnetic resonance imaging (MRI) scans was performed to identify patients with an ACL injury and a PTIF with &#8805;2 mm impression and &#8805;50&#37; loss of LM bony support between January 2018 and September 2023. At UH1, PTIFs were surgically addressed according to Menzdorf et al., whereas at UH2 only ACLR was performed.Thirty-two patients (mean age: 35.9 &#177; 11.2 years) were included. Nineteen patients underwent arthroscopically assisted transtibial reduction (FR group) with simultaneous ACLR or refixation &#91;6&#215; refixation of bony ACL tear, 7&#215; Semitendinosus (S) graft, 6&#215; Semitendinosus &#43; Gracilis (S&#43;G) graft; no anterolateral tenodesis (LET)&#93;. Thirteen patients were treated without fracture reduction (NFR group), receiving ACL reconstruction alone &#91;6&#215; Quadriceps tendon (Q), 7&#215; S graft, 2&#215; with LET&#93;. Patient-reported outcome measures (PROMs) were assessed using the visual analog scale (VAS), International Knee Documentation Committee (IKDC) score, Knee injury and Osteoarthritis Outcome Score (KOOS), Lysholm score, Tegner activity score and Anterior Cruciate Ligament-Return to Sports after Injury (ACL-RSI) scale with a minimum follow-up (FU) of 24 months after surgery. Clinical examination included side-to-side differences in the Lachman test. The Mann-Whitney U test was used to compare the groups.</Pgraph><Pgraph><Mark1>Results: </Mark1>Mean FU was 49.3 months. No significant differences in demographic characteristics were observed except for sex distribution &#91;FR: 7 male, 12 female vs. NFR: 13 male; age: 39.3 &#177; 12.5 vs. 30.9 &#177; 6.5 years; FU: 49.9 &#177; 17.9 vs. 45.8 &#177; 21.3 months; BMI: 26.1 &#177; 4.3 vs. 25.2 &#177; 3.7 kg&#47;m<Superscript>2</Superscript>&#93;. Most PTIFs were classified as Menzdorf type 2b (22&#47;32). Both groups demonstrated good to excellent clinical outcomes, with no statistically significant differences in PROMs (FR vs. NFR; &#916;VAS: -5.7 &#177; 3.9 vs. &#8211;5.2 &#177; 3.2; IKDC: 77.4 &#177; 14.3 vs. 82.1 &#177; 19.7; KOOS: 82.4 &#177; 11.9 vs. 83.6 &#177; 17.7; Lysholm: 83,3 &#177; 13,3 vs. 85.5 &#177; 17.4; &#916;Tegner: -1.1 &#177; 0.9 vs. -1.6 &#177; 1.9; ACL-RSI: 74.7 &#177; 21.6 vs. 59.5 &#177; 32.7) or Lachman test results (side-to-side difference 2.2 &#177; 1.6 mm vs. 1.7 &#177; 0.8 mm). Two patients in each group required arthrolysis. Three FR patients underwent screw removal due to implant-related discomfort. No ACL graft ruptures occurred.</Pgraph><Pgraph><Mark1>Discussion and conclusions: </Mark1>Regardless of PTIF management involving &#8805;2 mm of impression and &#8805;50&#37; loss of bony support, both groups showed good to excellent outcomes after ACL reconstruction.</Pgraph></TextBlock>
    <Media>
      <Tables>
        <NoOfTables>0</NoOfTables>
      </Tables>
      <Figures>
        <NoOfPictures>0</NoOfPictures>
      </Figures>
      <InlineFigures>
        <NoOfPictures>0</NoOfPictures>
      </InlineFigures>
      <Attachments>
        <NoOfAttachments>0</NoOfAttachments>
      </Attachments>
    </Media>
  </OrigData>
</GmsArticle>