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  <doc>
    <id>6545</id>
    <completedYear>2017</completedYear>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>67</pageFirst>
    <pageLast>79</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>232</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2017-11-23</completedDate>
    <publishedDate>2018-01-01</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Changes in Knee Shape and Geometry Resulting from Total Knee Arthroplasty</title>
    <abstract language="eng">Changes in knee shape and geometry resulting from total knee arthroplasty can affect patients in numerous important ways: pain, function, stability, range of motion, and kinematics. Quantitative data concerning these changes have not been previously available, to our knowledge, yet are essential to understand individual experiences of total knee arthroplasty and thereby improve outcomes for all patients. The limiting factor has been the challenge of accurately measuring these changes. Our study objective was to develop a conceptual framework and analysis method to investigate changes in knee shape and geometry, and prospectively apply it to a sample total knee arthroplasty population. Using clinically available computed tomography and radiography imaging systems, the three-dimensional knee shape and geometry of nine patients (eight varus and one valgus) were compared before and after total knee arthroplasty. All patients had largely good outcomes after their total knee arthroplasty. Knee shape changed both visually and numerically. On average, the distal condyles were slightly higher medially and lower laterally (range: +4.5 mm to −4.4 mm), the posterior condyles extended farther out medially but not laterally (range: +1.8 to −6.4 mm), patellofemoral distance increased throughout flexion by 1.8–3.5 mm, and patellar thickness alone increased by 2.9 mm (range: 0.7–5.2 mm). External femoral rotation differed preop and postop. Joint line distance, taking cartilage into account, changed by +0.7 to −1.5 mm on average throughout flexion. Important differences in shape and geometry were seen between pre-total knee arthroplasty and post-total knee arthroplasty knees. While this is qualitatively known, this is the first study to report it quantitatively, an important precursor to identifying the reasons for the poor outcome of some patients. Using the developed protocol and visualization techniques to compare patients with good versus poor clinical outcomes could lead to changes in implant design, implant selection, component positioning, and surgical technique. Recommendations based on this sample population are provided. Intraoperative and postoperative feedback could ultimately improve patient satisfaction.</abstract>
    <parentTitle language="eng">Journal of Engineering in Medicine</parentTitle>
    <identifier type="url">http://journals.sagepub.com/eprint/ZVgNrNESA9EjIcaFWSjb/full</identifier>
    <identifier type="doi">10.1177/0954411917743274</identifier>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Mohsen Akbari Shandiz</author>
    <submitter>Stefan Zachow</submitter>
    <author>Paul Boulos</author>
    <author>Stefan Sævarsson</author>
    <author>Heiko Ramm</author>
    <author>Chun Kit Fu</author>
    <author>Stephen Miller</author>
    <author>Stefan Zachow</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="BMBF-TOKMIS">BMBF-TOKMIS</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="projects" number="MODAL-MedLab">MODAL-MedLab</collection>
    <collection role="projects" number="MODAL-Gesamt">MODAL-Gesamt</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3614</id>
    <completedYear>2012</completedYear>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>263</pageFirst>
    <pageLast>271</pageLast>
    <pageNumber/>
    <edition/>
    <issue>10</issue>
    <volume>1</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Radiological method for measuring patellofemoral tracking and tibiofemoral kinematics before and after total knee replacement</title>
    <parentTitle language="eng">Bone and Joint Research</parentTitle>
    <identifier type="doi">10.1302/2046-3758.110.2000117</identifier>
    <identifier type="url">http://www.bjr.boneandjoint.org.uk/content/1/10/263.short</identifier>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Stefan Saevarsson</author>
    <author>Gulshan Sharma</author>
    <author>Shahram Amiri</author>
    <author>Sigrun Montgomery</author>
    <author>Heiko Ramm</author>
    <author>Derek Lichti</author>
    <author>Robert Lieck</author>
    <author>Stefan Zachow</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3604</id>
    <completedYear>2013</completedYear>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1543</pageFirst>
    <pageLast>1550</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>28</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Kinematic Differences Between Gender Specific And Traditional Knee Implants</title>
    <parentTitle language="eng">The Journal of Arthroplasty</parentTitle>
    <identifier type="doi">10.1016/j.arth.2013.01.021</identifier>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Stefan Saevarsson</author>
    <author>Gulshan Sharma</author>
    <author>Heiko Ramm</author>
    <author>Robert Lieck</author>
    <author>Carol Hutchison</author>
    <author>Jason Werle</author>
    <author>Sigrun Montgomery</author>
    <author>Carolina Romeo</author>
    <author>Stefan Zachow</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3637</id>
    <completedYear>2012</completedYear>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace>San Francisco, CA</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Knee Pose and Geometry Pre- and Post-Total Knee Arthroplasty Using Computed Tomography</title>
    <parentTitle language="deu">58th Annual Meeting of the Orthopaedic Research Society (ORS)</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Gulshan Sharma</author>
    <author>Karen Ho</author>
    <author>Stefan Saevarsson</author>
    <author>Heiko Ramm</author>
    <author>Robert Lieck</author>
    <author>Stefan Zachow</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3638</id>
    <completedYear>2012</completedYear>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>poster</type>
    <publisherName/>
    <publisherPlace>San Francisco, CA</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Sequential-Biplane Radiography for Measuring Pre and Post Total Knee Arthroplasty Kinematics</title>
    <parentTitle language="deu">58th Annual Meeting of the Orthopaedic Research Society (ORS)</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Gulshan Sharma</author>
    <author>Stefan Saevarsson</author>
    <author>Shahram Amiri</author>
    <author>Sigrun Montgomery</author>
    <author>Heiko Ramm</author>
    <author>Derek Lichti</author>
    <author>Stefan Zachow</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3639</id>
    <completedYear>2012</completedYear>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Kinematic Comparison Between Gender Specific and Traditional Femoral Implants</title>
    <parentTitle language="eng">67th Canadian Orthopaedic Association (COA) Annual Meeting</parentTitle>
    <enrichment key="PeerReviewed">no</enrichment>
    <author>Saevarsson Stefan</author>
    <author>Sharma Gulshan</author>
    <author>Montgomery Sigrun</author>
    <author>Ho Karen</author>
    <author>Heiko Ramm</author>
    <author>Robert Lieck</author>
    <author>Stefan Zachow</author>
    <author>Carol Hutchison</author>
    <author>Werle Jason</author>
    <author>Anglin Carolyn</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>3640</id>
    <completedYear>2012</completedYear>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2215</pageFirst>
    <pageLast>21</pageLast>
    <pageNumber/>
    <edition/>
    <issue>13</issue>
    <volume>45</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Computed tomography analysis of knee pose and geometry before and after total knee arthroplasty</title>
    <parentTitle language="eng">Journal of biomechanics</parentTitle>
    <identifier type="doi">10.1016/j.jbiomech.2012.06.004</identifier>
    <identifier type="url">http://www.ncbi.nlm.nih.gov/pubmed/22796002</identifier>
    <enrichment key="PeerReviewed">yes</enrichment>
    <author>Karen Ho</author>
    <author>Stefan Saevarsson</author>
    <author>Heiko Ramm</author>
    <author>Robert Lieck</author>
    <author>Stefan Zachow</author>
    <author>Gulshan Sharma</author>
    <author>Erica Rex</author>
    <author>Shahram Amiri</author>
    <author>Barnabas Wu</author>
    <author>Andre Leumann</author>
    <author>Carolyn Anglin</author>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="projects" number="PelViz">PelViz</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>5369</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Towards Robust Measurement Of Pelvic Parameters From AP Radiographs Using Articulated 3D Models</title>
    <abstract language="eng">Patient-specific parameters such as the orientation of the acetabulum or pelvic tilt are useful for custom planning for total hip arthroplasty (THA) and for evaluating the outcome of surgical interventions. The gold standard in obtaining pelvic parameters is from three-dimensional (3D) computed tomography (CT) imaging. However, this adds time and cost, exposes the patient to a substantial radiation dose, and does not allow for imaging under load (e.g. while the patient is standing). If pelvic parameters could be reliably derived from the standard anteroposterior (AP) radiograph, preoperative planning would be more widespread, and research analyses could be applied to retrospective data, after a postoperative issue is discovered. &#13;
The goal of this work is to enable robust measurement of two surgical parameters of interest: the tilt of the anterior pelvic plane (APP) and the orientation of the natural acetabulum. We present a computer-aided reconstruction method to determine the APP and natural acetabular orientation from a single, preoperative X-ray. It can easily be extended to obtain other important preoperative and postoperative parameters solely based on a single AP radiograph.</abstract>
    <parentTitle language="eng">Computer Assisted Radiology and Surgery (CARS)</parentTitle>
    <enrichment key="PeerReviewed">yes</enrichment>
    <enrichment key="PreprintUrn">urn:nbn:de:0297-zib-53707</enrichment>
    <author>Moritz Ehlke</author>
    <submitter>Moritz Ehlke</submitter>
    <author>Thomas Frenzel</author>
    <author>Heiko Ramm</author>
    <author>Mohsen Akbari Shandiz</author>
    <author>Carolyn Anglin</author>
    <author>Stefan Zachow</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Articulated Models, Statistical Shape And Intensity Models, 2D/3D Anatomy Reconstruction, Pelvic Parameters Measurement, Total Hip Arthroplasty</value>
    </subject>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="ehlke">Ehlke, Moritz</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="BSRT-3DFromXray">BSRT-3DFromXray</collection>
    <collection role="projects" number="ECMath-CH8">ECMath-CH8</collection>
    <collection role="projects" number="PelViz">PelViz</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
  </doc>
  <doc>
    <id>5370</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2015-02-13</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Towards Robust Measurement of Pelvic Parameters from AP Radiographs using Articulated 3D Models</title>
    <abstract language="eng">Patient-specific parameters such as the orientation of the acetabulum or pelvic tilt are useful for custom planning for total hip arthroplasty (THA) and for evaluating the outcome of surgical interventions. The gold standard in obtaining pelvic parameters is from three-dimensional (3D) computed tomography (CT) imaging. However, this adds time and cost, exposes the patient to a substantial radiation dose, and does not allow for imaging under load (e.g. while the patient is standing). If pelvic parameters could be reliably derived from the standard anteroposterior (AP) radiograph, preoperative planning would be more widespread, and research analyses could be applied to retrospective data, after a postoperative issue is discovered. The goal of this work is to enable robust measurement of two surgical parameters of interest: the tilt of the anterior pelvic plane (APP) and the orientation of the natural acetabulum. We present a computer-aided reconstruction method to determine the APP and natural acetabular orientation from a single, preoperative X-ray. It can easily be extended to obtain other important preoperative and postoperative parameters solely based on a single AP radiograph.</abstract>
    <identifier type="issn">1438-0064</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-53707</identifier>
    <enrichment key="SourceTitle">Appeared in: International Journal for Computer Assisted Radiology and Surgery (IJCARS)</enrichment>
    <author>Moritz Ehlke</author>
    <submitter>Moritz Ehlke</submitter>
    <author>Thomas Frenzel</author>
    <author>Heiko Ramm</author>
    <author>Mohsen Akbari Shandiz</author>
    <author>Carolyn Anglin</author>
    <author>Stefan Zachow</author>
    <series>
      <title>ZIB-Report</title>
      <number>15-11</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Articulated Models, Statistical Shape And Intensity Models, 2D/3D Anatomy Reconstruction, Pelvic Parameters Measurement, Total Hip Arthroplasty</value>
    </subject>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="ehlke">Ehlke, Moritz</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="BSRT-3DFromXray">BSRT-3DFromXray</collection>
    <collection role="projects" number="ECMath-CH8">ECMath-CH8</collection>
    <collection role="projects" number="PelViz">PelViz</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/5370/ZIBReport-15-11.pdf</file>
  </doc>
  <doc>
    <id>4982</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2014-05-05</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Robust Measurement of Natural Acetabular Orientation from AP Radiographs using Articulated 3D Shape and Intensity Models</title>
    <identifier type="issn">1438-0064</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-49824</identifier>
    <enrichment key="SourceTitle">Presented at the 14th Annual Meeting of CAOS-International (CAOS)</enrichment>
    <author>Moritz Ehlke</author>
    <submitter>Moritz Ehlke</submitter>
    <author>Thomas Frenzel</author>
    <author>Heiko Ramm</author>
    <author>Hans Lamecker</author>
    <author>Mohsen Akbari Shandiz</author>
    <author>Carolyn Anglin</author>
    <author>Stefan Zachow</author>
    <series>
      <title>ZIB-Report</title>
      <number>14-12</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>articulated shape and intensity models</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>3D reconstruction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>acetabular orientation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>image registration</value>
    </subject>
    <collection role="ccs" number="">Health</collection>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="medplan">Therapy Planning</collection>
    <collection role="persons" number="ehlke">Ehlke, Moritz</collection>
    <collection role="persons" number="lamecker">Lamecker, Hans</collection>
    <collection role="persons" number="zachow">Zachow, Stefan</collection>
    <collection role="projects" number="BSRT-3DFromXray">BSRT-3DFromXray</collection>
    <collection role="projects" number="ECMath-CH8">ECMath-CH8</collection>
    <collection role="projects" number="JointKinematics">JointKinematics</collection>
    <collection role="projects" number="PelViz">PelViz</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/4982/zib-report-14-12.pdf</file>
  </doc>
</export-example>
