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Table 4 The comparison of L4/5 segment activity ranges among the four spine models: N, H, H1, H2

From: Biomechanical evaluation of percutaneous cement discoplasty by finite element analysis

L4-L5 Motion Model Simulation value (radian) Relative ratio (combined)
FE (x) N 0.22649 100% (Normal)
H 0.21524 95.03%
H1 0.14050 62.03%
H2 0.14268 63.0%
LRR (z) N 0.10839 100% (Normal)
H 0.09513 87.8%
H1 0.05082 46.9%
H2 0.04919 45.4%
LRB(y) N 0.14095 100% (Normal)
H 0.12596 89.4%
H1 0.07048 50.0%
H2 0.06904 49%
  1. FE Flexion and Extension, LRB Left and Right Bending, LRR Left and Right Rotation