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Table 2 Disc stresses at 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 (KPa)

L3-L4 (KPa)

Flexion

INT

621 (100%)

558 (100%)

AWE

906 (146%)

782 (140%)

FUS

915 (147%)

944 (169%)

AWEFUS

1370 (221%)

661 (118%)

Extension

INT

399 (100%)

402 (100%)

AWE

422 (106%)

455 (113%)

FUS

410 (103%)

437 (109%)

AWEFUS

525 (131%)

184 (46%)

Lateral Bending

INT

1050 (100%)

1040 (100%)

AWE

1170 (111%)

1090 (105%)

FUS

1180 (112%)

1090 (105%)

AWEFUS

1840 (175%)

405 (39%)

Torsion

INT

540 (100%)

593 (100%)

AWE

419 (78%)

441 (74%)

FUS

436 (81%)

454 (77%)

AWEFUS

488 (90%)

322 (54%)

  1. The percentages indicate the disc stresses of all models normalized by the disc stresses of INT.