<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>302</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>196</pageFirst>
    <pageLast>201</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>vol. 49</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-02-13</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Leg length and offset differences above 5 mm after total hip arthroplasty are associated with altered gait kinematics</title>
    <abstract language="eng">We aimed to investigate the relationship between postoperative leg length/offset (LL/OS) reconstruction and gait performance after total hip arthroplasty (THA). In the course of a prospective randomized controlled trial, 60 patients with unilateral hip arthrosis received cementless THA through a minimally-invasive anterolateral surgical approach. One year post-operatively, LL and global OS restoration were analyzed and compared to the contralateral hip on AP pelvic radiographs. The combined postoperative limb length/OS reconstruction of the operated hip was categorized as restored (within 5 mm) or non-restored (more than 5 mm reduction or more than 5 mm increment). The acetabular component inclination, anteversion and femoral component anteversion were evaluated using CT scans of the pelvis and the femur. 3D gait analysis of the lower extremity and patient related outcome measures (HHS, HOOS, EQ-5D) were obtained pre-operatively, six months and twelve months post-operatively by an observer blinded to radiographic results. Component position of cup and stem was comparable between the restored and non-restored group. Combined LL and OS restoration within 5 mm resulted in higher Froude number (p &lt; 0.001), normalized walking speed (p &lt; 0.001) and hip range-of-motion (ROM) (p = 0.004) during gait twelve months postoperatively, whereas gait symmetry was comparable regardless of LL and OS reconstruction at both examinations. Clinical scores did not show any relevant association between the accuracy of LL or OS reconstruction and gait six/twelve months after THA. In summary, postoperative LL/OS discrepancies larger than 5 mm relate to unphysiological gait kinematics within the first year after THA. DRKS00000739, German Clinical Trials Register.</abstract>
    <parentTitle language="eng">Gait &amp; Posture</parentTitle>
    <identifier type="doi">10.1016/j.gaitpost.2016.07.011</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Tobias Renkawitz</author>
    <author>Tim A. Weber</author>
    <author>Silvia Dullien</author>
    <author>Michael Woerner</author>
    <author>Sebastian Dendorfer</author>
    <author>Joachim Grifka</author>
    <author>Markus Weber</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>THA</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Leg length</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offset</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gait analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biomechanics</value>
    </subject>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="institutes" number="RCBE">Regensburg Center of Biomedical Engineering - RCBE</collection>
    <collection role="persons" number="dendorferlbm">Dendorfer, Sebastian (Prof. Dr.), Zeitschriftenbeiträge - Labor Biomechanik</collection>
    <collection role="othforschungsschwerpunkt" number="16314">Lebenswissenschaften und Ethik</collection>
    <collection role="institutes" number="">Labor Biomechanik (LBM)</collection>
  </doc>
  <doc>
    <id>301</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>418</pageFirst>
    <pageLast>425</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>vol. 49</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-02-13</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Gait six month and one-year after computer assisted Femur First THR vs. conventional THR. Results of a patient- and observer- blinded randomized controlled trial</title>
    <abstract language="eng">A prospective randomized controlled trial is presented that is used to compare gait performance between the computer assisted Femur First (CAS FF) operation method and conventional THR (CON). 60 patients underwent a 3D gait analysis of the lower extremity at pre-operative, 6 months post-operative and twelve months post-operative. Detailed verification experiments were facilitated to ensure the quality of data as well as to avoid over-interpreting of the data. The results confirm a similar data-quality as reported in the literature. Walking speed, range of motion and symmetry thereof improved over the follow-up period, without significant differences between the groups. While all parameters do significantly increase over the follow-up period for both groups, there were no significant differences between them at any given time-point. Patients undergoing CAS FF showed a trend to improved hip flexion angle indicating a possible long-term benefit.</abstract>
    <parentTitle language="eng">Gait &amp; Posture</parentTitle>
    <identifier type="doi">10.1016/j.gaitpost.2016.06.035</identifier>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <author>Tim A. Weber</author>
    <author>Sebastian Dendorfer</author>
    <author>Sjoerd K. Bulstra</author>
    <author>Joachim Grifka</author>
    <author>Gijsbertus Jacob Verkerke</author>
    <author>Tobias Renkawitz</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biomechanics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Combined anteversion</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Computer-assisted surgery</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Femur first</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gait analysis</value>
    </subject>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="institutes" number="RCBE">Regensburg Center of Biomedical Engineering - RCBE</collection>
    <collection role="persons" number="dendorferlbm">Dendorfer, Sebastian (Prof. Dr.), Zeitschriftenbeiträge - Labor Biomechanik</collection>
    <collection role="othforschungsschwerpunkt" number="16314">Lebenswissenschaften und Ethik</collection>
    <collection role="institutes" number="">Labor Biomechanik (LBM)</collection>
  </doc>
  <doc>
    <id>310</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2323</pageFirst>
    <pageLast>2333</pageLast>
    <pageNumber/>
    <edition/>
    <issue>12</issue>
    <volume>39</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2020-02-18</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">The impact of standard combined anteversion definitions on gait and clinical outcome within one year after total hip arthroplasty</title>
    <abstract language="eng">Different target areas within the concept of combined cup and stem anteversion have been published for total hip arthroplasty (THA). We asked whether component positioning according to eight standard combined anteversion rules is associated with (1) more physiological gait patterns, (2) higher improvement of gait variables and (3) better clinical outcome after THA.In a prospective clinical study, 60 patients received cementless THA through an anterolateral MIS approach in a lateral decubitus position. Six weeks postoperatively, implant position was analysed using 3D-CT by an independent external institute. Preoperatively, six and 12 months postoperatively range of motion, normalized walking speed and hip flexion symmetry index were measured using 3D motion-capture gait analysis. Patient-related outcome measures (HHS, HOOS, EQ-5D) were obtained by an observer blinded to 3D-CT results. Eight combined anteversion definitions and Lewinnek's "safe zone" were evaluated regarding their impact on gait patterns and clinical outcome.Combined cup and stem anteversion according to standard combined anteversion definitions as well as cup placement within Lewinnek's "safe zone" did not influence range of motion, normalized walking speed and/or hip flexion symmetry index six and 12 months after THA. Similarly, increase of gait parameters within the first year after THA was comparable between all eight combined anteversion rules. Clinical outcome measures like HHS, HOOS and EQ-5D did not show any benefit for either of the combined anteversion definitions.Standard combined cup and stem anteversion rules do not improve postoperative outcome as measured by gait analysis and clinical scores within one year after THA.</abstract>
    <parentTitle language="eng">International Orthopaedics</parentTitle>
    <identifier type="doi">10.1007/s00264-015-2777-8</identifier>
    <author>Markus Weber</author>
    <author>Tim A. Weber</author>
    <author>Michael Woerner</author>
    <author>Benjamin Craiovan</author>
    <author>Michael Worlicek</author>
    <author>Sebastian Winkler</author>
    <author>Joachim Grifka</author>
    <author>Tobias Renkawitz</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Total hip athroplasty</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Combined anteversion</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Outcome</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gait analysis</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Hüftgelenkprothese</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Bewegungsanalyse</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Gehen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>swd</type>
      <value>Funktionelle Anatomie</value>
    </subject>
    <collection role="ddc" number="617">Chirurgie und verwandte medizinische Fachrichtungen</collection>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="institutes" number="RCBE">Regensburg Center of Biomedical Engineering - RCBE</collection>
    <collection role="persons" number="dendorferlbm">Dendorfer, Sebastian (Prof. Dr.), Zeitschriftenbeiträge - Labor Biomechanik</collection>
    <collection role="othforschungsschwerpunkt" number="16314">Lebenswissenschaften und Ethik</collection>
  </doc>
</export-example>
