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Table 3 Facet joint forces in instrumented levels and cephalic adjacent levels

From: Biomechanical evaluation of a new pedicle screw-based posterior dynamic stabilization device (Awesome Rod System) - a finite element analysis

Motion Model L2-L3 (N) L3-L4 (N) L4-L5
Extension INT 108 (100%) 118 (100%) 108 (100%)
AWE 138 (128%) 152 (129%) 0 (0%)
FUS 132 (122%) 145 (123%) 0 (0%)
AWEFUS 208 (193%) 0 (0%) 0 (0%)
Lateral Bending INT 40 (100%) 15 (100%) 21 (100%)
AWE 51 (128%) 44 (293%) 0 (0%)
FUS 54 (135%) 44 (293%) 0 (0%)
AWEFUS 110 (275%) 0 (0%) 0 (0%)
Torsion INT 141 (10%) 143 (100%) 135 (100%)
AWE 196 (139%) 204 (143%) 3 (2%)
FUS 203 (144%) 210 (147%) 19 (14%)
AWEFUS 259 (184%) 6 (4%) 28 (21%)
  1. The percentages indicate the facet joint forces of all models normalized by the facet joint forces of INT.