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{* Parameter file Version 1.0 *}
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{* Please note that some of the parameters are trial specific and some are *}
{* subject specific. *}
{* ============================================================================ *}
{* ============================================================================ *}
{* Trial specific parameters *}
{* ============================================================================ *}
{* Start and end of gait cycle. Method works best for a whole number of gait *}
{* cycles. These do not have to start at initial contact so left and right *}
{* sides can be calculated simultaneously. *}
$Start = 56
$End = 104
{* ============================================================================ *}
{* Subject specific parameters *}
{* ============================================================================ *}
{* All lengths in mm. *}
{* If ASIStoTrocDist is zero then not zero then the anterior-posterior position *}
{* of the hip joint centre is scaled to average leg length. If it not the *}
{* values will be used. *}
$LASIStoTrocDist = 0
$RASIStoTrocDist = 0
{* If $AsisDist is zero then the interASIS distance is set equal to the average *}
{* interASIS distance over the entire capture period. *}
$InterAsisDistance = 205
{* General scaling of the pelvis is based on average leg length. *}
$LLeglength = 745
$RLeglength = 755
{* Knee and ankle widths are twice the distance from joint centre to marker *}
{* base. Thus if orhtoses are used the widths should be measured with the *}
{* orthoses on. *}
$LKneeWidth = 96
$RKneeWidth = 98
$LAnkleWidth = 61
$RAnkleWidth = 62
{* ============================================================================ *}
{* General parameters *}
{* ============================================================================ *}
$MarkerDiameter = 25
DeadBand = 15
{* ============================================================================ *}
{* Output parameters *}
{* ============================================================================ *}
{* This method is tested with two internal consistency checks. *}
{* Values will be output unmodified if data satisifes quality checks. *}
{* Values will have 360 degrees added if quality checks not satisfied. They *}
{* can thus be used but the failure of the checks will be obvious. *}
{* It will output a value of 720 if the calculated thigh correction lies *}
{* outside the range +/-32 degrees. *}
{* Angle below to be inserted in "Thigh rotation" box on Session screen of VCM. *}
{* This is the angle through which the thigh marker needs to be rotated about a *}
{* line joining the hip joint centre and the true knee joint centre to minimise *}
{* cross-talk. The underlying method is only accurate to half a degree. Decimal *}
{* places arise from conversion to units for VCM. Specify to one decimal place *}
{* in VCM to avoid introducing additional errors associated with conversion. *}
$LVCMRotation = 0
$RVCMRotation = 0
{* Number of degrees which thigh marker needs to be rotated about line joining *}
{* hip centre and knee marker to minimise cross-talk. This is different to the *}
{* number used by VCM but is a lot simpler to use if you are writing your own *}
{* BodyBuilder code. *}
$LFemurRotation = 0
$RFemurRotation = 0
{* Following are parameters describing the analysis. They form the basis of *}
{* quality checks ValVar is the variance on the varus-valgus signal once the *}
{* correction has been applied. *}
{* If this is greater than 9 degrees squared then the assumption that the range *}
{* of varus-valgus throughout the gait cycle is small has not been met. This *}
{* may be because the knee exhibits medio-lateral instability or because there *}
{* is too much skin movement artefact or thigh marker "wobble". *}
$LValVar = 0
$RValVar = 0
{* ThetaMin is the theoretically calculated difference between the point of *}
{* minimum variance of the varus-valgus signal as thigh marker offset is *}
{* varied and the true marker offset. If the magnitude of this is greater than *}
{* 1 degree then the calculated offset is not a good approximation to the true *}
{* value. This will occur if either the range of knee flexion is not big enough *}
{* to give clear cross-talk or if the true varus-valgus signal and true knee *}
{* flexion curves are not independent. *}
$LThetaMin = 0
$RThetaMin = 0