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Table 4 ROM of the intact and surgical models

From: Biomechanical feasibility of semi-rigid stabilization and semi-rigid lumbar interbody fusion: a finite element study

Flexion Intact PD PD + SIS PD + SPI Cage Cage+SIS Cage+SPI Cage+PI
L3/4 5.94 6.03 5.47 5.58 6.30 5.78 5.83 6.05
L4/5 6.45 6.93 2.27 1.40 1.93 1.24 1.21 1.01
L5/S1 7.60 8.02 7.57 7.72 8.31 7.88 9.45 9.59
Extension Intact PD PD + SIS PD + SPI Cage Cage+SIS Cage+SPI Cage+PI
L3/4 0.55 0.36 0.50 0.51 0.45 0.53 0.53 0.56
L4/5 2.56 2.72 1.58 1.12 0.98 0.85 0.86 0.88
L5/S1 3.42 3.64 3.53 3.49 3.6 3.52 4.45 4.46
Lateral bending Intact PD PD + SIS PD + SPI Cage Cage+SIS Cage+SPI Cage+PI
L3/4 1.85 3.43 2.18 1.92 2.17 2.18 1.60 1.86
L4/5 2.82 3.11 2.88 1.15 1.45 1.40 1.39 0.98
L5/S1 2.27 2.63 2.62 2.42 2.51 2.53 2.86 2.89
Axial rotation Intact PD PD + SIS PD + SPI Cage Cage+SIS Cage+SPI Cage+PI
L3/4 2.80 2.77 2.78 2.95 2.87 2.87 2.95 2.89
L4/5 1.44 1.55 1.51 1.23 1.15 1.12 0.27 0.26
L5/S1 2.43 2.39 2.39 2.69 2.39 2.42 2.68 2.69