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    <title language="eng">Towards understanding knee joint laxity: Errors in non-invasive assessment of joint rotation can be corrected</title>
    <parentTitle language="eng">Medical Engineering and Physics</parentTitle>
    <identifier type="doi">doi.org/10.1016/j.medengphy.2014.03.017</identifier>
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    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Philippe Moewis</author>
    <submitter> Stoetzel</submitter>
    <author>Heide Boeth</author>
    <author>Markus O. Heller</author>
    <author>Caroline Yntema</author>
    <author>Tobias Jung</author>
    <author>Ralf Doyscher</author>
    <author>Rainald Ehrig</author>
    <author>Yanlin Zhong</author>
    <author>William R. Taylor</author>
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    <collection role="institutes" number="compsys">Computational Systems Biology</collection>
    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <title language="eng">Muskuloskeletale Belastungen im Schafshinterlauf</title>
    <parentTitle language="eng">Materialwissenschaft und Werkstofftechnik</parentTitle>
    <author>Markus O. Heller</author>
    <author>Georg Duda</author>
    <author>Rainald Ehrig</author>
    <author>H. Schell</author>
    <author>P. Seebeck</author>
    <author>William R. Taylor</author>
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    <title language="eng">Validation of a New Model of Human Knee Kinematics against in Vivo Data under Physiologic Neuromuscular Activation Patterns</title>
    <parentTitle language="eng">Proceedings of the 51th Annual Meeting of the Orthopedic Society</parentTitle>
    <author>Markus O. Heller</author>
    <author>G. Duda</author>
    <author>Christian König</author>
    <author>William R. Taylor</author>
    <author>Rainald Ehrig</author>
    <author>S. Hinterwimmer</author>
    <author>H. Graichen</author>
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    <volume>29</volume>
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    <title language="eng">The weighted optimal common shape technique improves identification of the hip joint centre of rotation in vivo</title>
    <parentTitle language="eng">Journal of Orthopedic Research</parentTitle>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Markus O. Heller</author>
    <author>Stefan Kratzenstein</author>
    <author>Rainald Ehrig</author>
    <author>Georgi Wassilew</author>
    <author>Georg Duda</author>
    <author>William R. Taylor</author>
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    <title language="eng">A new model to predict in vivo human knee kinematics under physiological-like muscle activation</title>
    <parentTitle language="eng">Journal of Biomechanics</parentTitle>
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    <author>Markus O. Heller</author>
    <author>Christian König</author>
    <author>F. Graichen</author>
    <author>S. Hinterwimmer</author>
    <author>Rainald Ehrig</author>
    <author>G. Duda</author>
    <author>William R. Taylor</author>
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    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <issue>7</issue>
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    <title language="eng">The SCoRE residual: A quality index to assess the accuracy of joint estimations</title>
    <parentTitle language="eng">Journal of Biomechanics</parentTitle>
    <identifier type="doi">10.1016/j.jbiomech.2010.12.009</identifier>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>Stefan Kratzenstein</author>
    <author>Georg Duda</author>
    <author>Adam Trepczynski</author>
    <author>William R. Taylor</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <id>2123</id>
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    <publishedYear>2006</publishedYear>
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    <language>eng</language>
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    <edition/>
    <issue>39</issue>
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    <title language="eng">A Survey for Formal Methods for Determining the Centre of Ball Joints</title>
    <parentTitle language="eng">Journal of Biomechanics</parentTitle>
    <author>Rainald Ehrig</author>
    <author>William R. Taylor</author>
    <author>G. Duda</author>
    <author>Markus O. Heller</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
    <collection role="institutes" number="compmed">Computational Medicine</collection>
    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
    <collection role="projects" number="DFG-Knee-Laxity">DFG-Knee-Laxity</collection>
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    <id>2124</id>
    <completedYear>2006</completedYear>
    <publishedYear>2006</publishedYear>
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    <publisherPlace>Chicago</publisherPlace>
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    <completedDate>--</completedDate>
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    <title language="eng">A New Approach for the Determination of Joint Axes</title>
    <parentTitle language="eng">Proceedings of the 52th Annual Meeting of the Orthopedic Society</parentTitle>
    <author>Rainald Ehrig</author>
    <author>William R. Taylor</author>
    <author>G. Duda</author>
    <author>Markus O. Heller</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <title language="eng">A Survey for Formal Methods for Determining Functional Joint Axes</title>
    <parentTitle language="eng">Journal of Biomechanics</parentTitle>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Rainald Ehrig</author>
    <author>William R. Taylor</author>
    <author>Georg Duda</author>
    <author>Markus O. Heller</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <collection role="projects" number="DFG-Knee-Laxity">DFG-Knee-Laxity</collection>
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    <publishedYear>2009</publishedYear>
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    <language>eng</language>
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    <publisherPlace>London</publisherPlace>
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    <title language="eng">An imageless method to quantify the mechanical femoral-tibial angle based on the functional determination of joint centers and axes</title>
    <parentTitle language="eng">Annual meeting of the ESMAC 2009</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Evgenios I. Kornaropoulos</author>
    <author>William R. Taylor</author>
    <author>Georg Duda</author>
    <author>Rainald Ehrig</author>
    <author>Georg Matziolis</author>
    <author>Michael Müller</author>
    <author>Georgi Wassilew</author>
    <author>Patrick Asbach</author>
    <author>Carsten Perka</author>
    <author>Markus O. Heller</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
    <collection role="institutes" number="compmed">Computational Medicine</collection>
    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <completedYear>2010</completedYear>
    <publishedYear>2010</publishedYear>
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    <language>eng</language>
    <pageFirst>204</pageFirst>
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    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>31</volume>
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    <title language="eng">Frontal plane alignment: An imageless method to predict the mechanical femoral–tibial angle (mFTA) based on functional determination of joint centres and axes</title>
    <parentTitle language="eng">Gait &amp; Posture</parentTitle>
    <identifier type="doi">10.1016/j.gaitpost.2009.10.006</identifier>
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    <author>Evgenios I. Kornaropoulos</author>
    <author>William R. Taylor</author>
    <author>Georg Duda</author>
    <author>Rainald Ehrig</author>
    <author>Georg Matziolis</author>
    <author>Michael Müller</author>
    <author>Georgi Wassilew</author>
    <author>Patrick Asbach</author>
    <author>Carsten Perka</author>
    <author>Markus O. Heller</author>
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    <publishedYear>2009</publishedYear>
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    <language>eng</language>
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    <pageNumber/>
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    <publisherName/>
    <publisherPlace>London</publisherPlace>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Reduction of the influence of skin marker artefacts using the optimal common shape technique</title>
    <parentTitle language="eng">Annual meeting of the ESMAC 2009</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>William R. Taylor</author>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <completedYear>2010</completedYear>
    <publishedYear>2010</publishedYear>
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    <language>eng</language>
    <pageFirst/>
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    <pageNumber/>
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    <publisherName/>
    <publisherPlace>Edinburgh</publisherPlace>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <title language="eng">A Quantification of Accuracy in Estimating Joint Centers</title>
    <parentTitle language="eng">17th Congress of the European Society of Biomechanics</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>Georg Duda</author>
    <author>William R. Taylor</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
    <collection role="institutes" number="compmed">Computational Medicine</collection>
    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <completedYear>2009</completedYear>
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    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace>Münster</publisherPlace>
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    <completedDate>--</completedDate>
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    <title language="eng">Die Bestimmung der Genauigkeit nicht-invasiver Techniken zur Ermittlung der Hüftgelenksposition in-vivo</title>
    <parentTitle language="eng">6th annual meeting of the German Society for Biomechanics (DGfB)</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>Markus O. Heller</author>
    <author>Rainald Ehrig</author>
    <author>Georg Duda</author>
    <author>Jörg H. Schröder</author>
    <author>William R. Taylor</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
    <collection role="institutes" number="compmed">Computational Medicine</collection>
    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <completedYear>2009</completedYear>
    <publishedYear>2009</publishedYear>
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    <language>eng</language>
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    <publisherName/>
    <publisherPlace>Berlin</publisherPlace>
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    <completedDate>--</completedDate>
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    <title language="eng">Der Vergleich von nicht-invasiven Techniken zur Bestimmung der Hüftgelenksposition</title>
    <parentTitle language="eng">Annual meeting of the German Society of Orthopaedics and Trauma Surgery</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>Markus O. Heller</author>
    <author>Rainald Ehrig</author>
    <author>Georg Duda</author>
    <author>Jörg H. Schröder</author>
    <author>William R. Taylor</author>
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    <collection role="persons" number="ehrig">Ehrig, Rainald</collection>
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    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace>New Orleans</publisherPlace>
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    <completedDate>--</completedDate>
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    <title language="eng">The Residual: A Reliable Measure of Accuracy in the Determination of Joint Centers</title>
    <parentTitle language="eng">Transactions Vol. 35, 2010 Annual Meeting of the Orthopedic Society</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>Markus O. Heller</author>
    <author>Rainald Ehrig</author>
    <author>Georg Duda</author>
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    <publisherPlace>Edinburgh</publisherPlace>
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    <completedDate>--</completedDate>
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    <title language="eng">The Hip Joint Centre can be determined to within 3 mm</title>
    <parentTitle language="eng">17th Congress of the European Society of Biomechanics</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Stefan Kratzenstein</author>
    <author>Markus O. Heller</author>
    <author>Rainald Ehrig</author>
    <author>Georg Duda</author>
    <author>William R. Taylor</author>
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    <publisherPlace>New Orleans</publisherPlace>
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    <title language="eng">A new approach for optimally reducing skin marker artifact allows determination of the hip joint center within 3mm</title>
    <parentTitle language="eng">Transactions Vol. 35, 2010 Annual Meeting of the Orthopedic Society</parentTitle>
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    <author>Stefan Kratzenstein</author>
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    <author>Georgi Wassilew</author>
    <author>Georg Duda</author>
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    <title language="eng">The determination of joint axes</title>
    <parentTitle language="eng">5. World Congress of Biomechanics, Munich, Journal of Biomechanics</parentTitle>
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    <author>Rainald Ehrig</author>
    <author>G. Duda</author>
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    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <author>William R. Taylor</author>
    <author>Berry M. Pöpplau</author>
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    <author>Heide Boeth</author>
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    <author>Ralf Doyscher</author>
    <author>Tobias Jung</author>
    <author>Philippe Moewis</author>
    <author>Sven Scheffler</author>
    <author>William R. Taylor</author>
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    <title language="eng">The Symmetrical Axis of Rotation Approach (SARA) for Determination of Joint Axes in Clinical Gait Analysis</title>
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    <author>William R. Taylor</author>
    <author>Rainald Ehrig</author>
    <author>G. Duda</author>
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    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <title language="eng">Can Skin Markers Determine the Kinematics of Underlying Bones?</title>
    <parentTitle language="eng">Proceedings of the 50th Annual Meeting of the Orthopedic Society</parentTitle>
    <author>William R. Taylor</author>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>H. Schell</author>
    <author>G. Duda</author>
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    <pageFirst>726</pageFirst>
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    <title language="eng">On the Influence of Soft Tissue Coverage in the Determination of Bone Kinematics using Bone Markers</title>
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    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>H. Schell</author>
    <author>P. Klein</author>
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    <parentTitle language="eng">Proceedings of the 51th Annual Meeting of the Orthopedic Society</parentTitle>
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    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>H. Schell</author>
    <author>P. Seebeck</author>
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    <language>eng</language>
    <pageFirst>791</pageFirst>
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    <title language="eng">Tibio-femoral Joint Contact Forces in Sheep</title>
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    <author>William R. Taylor</author>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>H. Schell</author>
    <author>P. Seebeck</author>
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    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <title language="eng">Reproducibility of a functional approach to gait analysis</title>
    <parentTitle language="eng">Annual meeting of the ESMAC 2009</parentTitle>
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    <author>William R. Taylor</author>
    <author>Evgenios I. Kornaropoulos</author>
    <author>Rainald Ehrig</author>
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    <author>Georg Duda</author>
    <collection role="institutes" number="num">Numerical Mathematics</collection>
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    <author>William R. Taylor</author>
    <author>Stefan Kratzenstein</author>
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    <author>Philippe Moewis</author>
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    <title language="eng">Targeted Marker Placement for the Functional Identification of the Hip Joint Centre</title>
    <parentTitle language="eng">Transactions Vol. 36, 2011 Annual Meeting of the Orthopedic Society</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>William R. Taylor</author>
    <author>Evgenios I. Kornaropoulos</author>
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    <author>F. Plank</author>
    <author>Markus O. Heller</author>
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    <collection role="projects" number="OSSCA">OSSCA</collection>
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    <id>2421</id>
    <completedYear>2006</completedYear>
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    <language>eng</language>
    <pageFirst>S491</pageFirst>
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    <edition/>
    <issue>39, Suppl. 1</issue>
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    <title language="eng">The medio-lateral force distribution in the sheep knee during walking</title>
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    <author>William R. Taylor</author>
    <author>Christian König</author>
    <author>A. Speirs</author>
    <author>Rainald Ehrig</author>
    <author>G. Duda</author>
    <author>Markus O. Heller</author>
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    <title language="eng">Die medio-laterale Kraftverteilung im Schafsknie</title>
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    <author>William R. Taylor</author>
    <author>Christian König</author>
    <author>A. Speirs</author>
    <author>Rainald Ehrig</author>
    <author>G. Duda</author>
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    <issue>3</issue>
    <volume>36</volume>
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    <title language="eng">Effective marker placement for functional identification of the centre of rotation at the hip</title>
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    <author>Stefan Kratzenstein</author>
    <author>Evgenios I. Kornaropoulos</author>
    <author>Rainald Ehrig</author>
    <author>Markus O. Heller</author>
    <author>Berry M. Pöpplau</author>
    <author>William R. Taylor</author>
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    <language>eng</language>
    <pageFirst>429</pageFirst>
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    <issue>4</issue>
    <volume>17</volume>
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    <publisherName>Elsevier</publisherName>
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    <title language="eng">Omnidirectional Displacements for Deformable Surfaces</title>
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    <author>Dagmar Kainmüller</author>
    <author>Hans Lamecker</author>
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    <author>Evgenios I. Kornaropoulos</author>
    <submitter> Stoetzel</submitter>
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    <edition/>
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