Table 2 Results of the repeated measures two-way ANOVA (P-values) on the mean values of both tensile (ε1) and compressive (ε2) strain on each intervertebral disc.

From: Experimental ex vivo characterization of the biomechanical effects of laminectomy and posterior fixation of the lumbo-sacral spine

 

L2-L3

L3-L4

L4-L5

L5-S1

 

ε1

ε2

ε1

ε2

ε1

ε2

ε1

ε2

Loading configurations

0.057

0.031*

0.003*

0.002*

< 0.001*

< 0.001*

< 0.001*

< 0.0001*

Spine conditions

0.065

0.205

0.020*

0.237

0.021*

0.004*

0.047*

0.109

Interaction between factors

0.316

0.792

0.277

0.122

0.202

0.003*

0.564

0.117

  1. The factor ‘Loading configurations’ is referred to flexion, extension, and lateral bending. The factor ‘Spine conditions’ is referred to intact, laminectomy and posterior fixation. As data for the intact condition were lost for the first 6 specimens, the statistical analysis was based on the remaining six specimens. A p-value < 0.05 was considered statistically significant (*).
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