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Fig. 7. Representative axial, cranial–caudal and medial–lateral axial
bending, and caudal and cranial shear strains for (A) the femur and (B) TBT
for three footfalls from a 36-week-old, 27 kg emu running with a 0.41DF at
5.40 m s–1. The shaded bars represent the stance phase during
the locomotor cycle. Note that the peak shear strains for the caudal surface
of the TBT are negative while those for the femur are positive. This is
consistent with the primary torques on these bones acting in opposite
directions, where the proximal ends of the femur and TBT experienced medial
and lateral torsion, respectively, when viewed from the cranial surfaces of
the bones.
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