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Links to access the full
simulation are at the bottom of this page.
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The first part of this page
should be read prior accessing the simulation to better understand the system
and presentation. If not, some features could be misunderstood.
Introduction
- The
models available from this particular page have been entirely built from
experiments. Therefore, the displayed results include the noise related
to the data collection techniques (in this particular case,
electrogoniometry and medical imaging), and artefacts can be present.
- The
user interface include two parts:
- The
left part shows the 3D morphology model; the model can be manipulated
using the standard interface of the VRML viewer installed on your
system. This mean that the control panel you access depends of the VRML
viewer you choose to use. Several view points can be accessed using the
viewpoint list menu from the standard interface..
- The
right part of the scene shows several kinematics graphs and control
buttons (see below), which allows controls of the model motion.
Control Buttons
- Full
motion trigger: the motion including all degrees-of-freedom collected
for that particular joint is simulated.
- Set
joint in upright position.
- Display
of anatomical axes.
- Display
of bone segment. The bone segments have been found from anatomical
landmarks virtually palpated using strict procedure. The full procedure
we used can be found from the public report section.
 
 
Kinematics graphs
- These
graphs display the kinematics of the related joint from the data
collected from goniometry and processed according the local joint
reference frame displayed with the bone model (using button #3, see
above).
- Despite
only graphs for rotations are showed, translations are used to simulate
the models: these simulation include all 6 degree-of-freedom (dofs)
collected by electrogoniometry.
- The
colour used for the graphs is similar to the corresponding axes on the
joint reference frame.
- Note
1: each of these graphs is also a motion trigger. Clicking on one
graph will start the simulation around the related dof. By doing this, you
must keep in mind that the visualization of an isolated dof will
produce bone collision: indeed in most joints (e.g. knee, ankle) all
dofs are closely related and constrained. Therefore, visualization of
one dof should only be used to watch the dof orientation and amplitude,
and not the bone segment relationships. Only the full motion is
meaningful to observe the relative motion of one bone segment on the
other.
- Note
2: the graph scale is different for each dof.
- The
graphs appear relatively small in the VRML scene. Therefore, the same
graphs are also shown in the access files (see below) to allow
the user to better read the graph legends.
  
Access Files to Joint Simulation
Keep in mind that these
simulations are build from several components (3D model, kinematics data,
images) so it can take some times to display on your system depending of the Internet
bandwidth and your system performance.
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