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Table 3 Comparisons of element size, number, and IDP of our different levels of degenerated models with different mesh densities

From: Effects of resting modes on human lumbar spines with different levels of degenerated intervertebral discs: a finite element investigation

   The edge length of elements (mm) Number of elements IDP (MPa)
Grade 0 Model A 0.5-0.7 3903319 0.262
  Model B 0.7-0.9 1659902 0.264
  Model C 0.9-1.1 1216302 0.266
  Model D 1.1-1.3 999088 0.289
  Model E 1.3-1.5 737770 0.637
Grade 1 Model A 0.5-0.7 3324073 0.224
  Model B 0.7-0.9 1325175 0.227
  Model C 0.9-1.1 661800 0.229
  Model D 1.1-1.3 373308 0.234
  Model E 1.3-1.5 243281 0.235
Grade 2 Model A 0.5-0.7 3256612 0.151
  Model B 0.7-0.9 1236574 0.166
  Model C 0.9-1.1 629499 0.162
  Model D 1.1-1.3 369033 0.176
  Model E 1.3-1.5 237352 0.15
Grade 3 Model A 0.5-0.7 3066937 0.107
  Model B 0.7-0.9 1233808 0.109
  Model C 0.9-1.1 599615 0.114
  Model D 1.1-1.3 350707 0.103
  Model E 1.3-1.5 232444 0.119
  1. (The models marked in bold were those used in this study.)