International Scholarly Research Notices

Research Article

Photoelastic and Finite Element Stress Analysis of the Gap between the L4 and L5 Vertebrae

Table 1

Mean + standard deviation of the shear stress (τ) determined by photoelastic analysis and by the finite elements method in three different regions of each vertebrae slice.
RegionSlice ASlice BSlice C
PhF.E.PhF.E.PhF.E.
Anterior (KPa) 2 6 . 1 2 ± 1 1 . 4 7 4 0 . 4 1 ± 2 . 3 1 3 5 . 7 8 ± 5 . 2 3 3 3 . 9 5 ± 4 . 1 2 2 5 . 4 0 ± 6 . 1 0 3 5 . 8 8 ± 1 . 1 0
Medial (KPa) 3 2 . 8 4 ± 3 . 7 2 3 6 . 1 2 ± 4 . 2 4 2 6 . 7 1 ± 6 . 7 3 3 1 . 8 8 ± 3 . 8 6 3 5 . 9 5 ± 3 . 9 6 4 0 . 6 1 ± 4 . 9 9
Posterior (KPa) 5 8 . 6 1 ± 1 8 . 7 5 4 4 . 8 2 ± 6 . 3 4 3 8 . 6 6 ± 1 5 . 4 9 4 1 . 4 6 ± 1 1 . 5 0 5 9 . 0 0 ± 6 . 1 4 5 8 . 5 1 ± 4 . 9 3
Ph = Photoelastic, F.E. = Finite elements.