Fig. 6

It shows the comparison of the IDP of L4/5 segment in MA with MB, MC and MD under a torque of 7.5 Nm in forward flexion, backward extension, left bending, right bending, left rotation and right rotation. As it depicted, in backward extension, MB and MC increased the IDP of L4/5 by 11.7% while M3 increased. In left rotation, M2 and M3 increased the IDP by 10% and 5.2%, while M2 and M3 increased the IDP of L4/5 by 8.2% and 4.1% in right rotation