Figure 4. Regional compressive biomechanical properties.
The inferior (I) and superior (S) surfaces were evaluated in the posterior (P), lateral (L), intermediate zone (IZ), medial (M), and anterior (A) regions. Deformed discs had a statistically significant increase in compressive modulus. Regional variations were not significant in post-hoc testing. Significant region-deformation differences are denoted with # (p<0.01) and significant surface-regional variations are denoted with * (p<0.02).