the difference in maximum head height that occurs before RF weight bearing compared to before LF weight bearing. Ref range: -6.0 to +6.0 mm

• Measured in mm and reported as a mean value of all strides.
• Diff Max Head determines timing of asymmetry (depending on sign of Diff Min Head).
• Diff Max Head = Max height of head before RF weight bearing minus (-) max height of head before LF weight bearing. 

the difference in maximum pelvis height that occurs before RH weight bearing compared to before LH weight bearing. Ref range: -3.0 to +3.0 mm

• Measured in mm and reported as a mean value of all strides. 
• RH asymmetries are assigned (+) values. LH asymmetries are assigned (-) values.  Elevated Diff Max (either + or -) correlates to a push off lameness in the hind limb. 
• Diff Max Pelvis = Max height of pelvis before RH weight bearing minus (-) max height of pelvis before LH weight bearing.

the difference in minimum head height that occurs during RF mid stance compared to during LF mid stance. Ref range: -6.0 to +6.0 mm 

• Measured in mm and reported as a mean value of all strides. 
• Diff Min Head determines side of asymmetry (positive value = RF, negative value = LF). 
• Diff Min Head = Min height of head during RF mid-stance minus (-) min height of head during LF mid-stance.

the difference in minimum pelvis height that occurs during RH mid stance compared to during LH mid stance.Ref range: -3.0 to +3.0 mm

• Measured in mm and reported as a mean value of all strides. 
• RH asymmetries are assigned (+) values.  LH asymmetries are assigned (-) values.  Elevated Diff Min (either + or -) correlates to an impact lameness in the hind limb.
• Diff Min Pelvis = Min height of pelvis during RH mid-stance minus (-) min height of pelvis during LH mid-stance