Design of Complexly Graded Structures inside Three-Dimensional Surface Models by Assigning Volumetric Structures
Figure 3
(a) CT scan of the lower spine showing the L3 (top), L4 (middle), and L5 (bottom) lumbar vertebrae [32]. (b) View of the STL file of an L5 lumbar vertebra from [32] exhibiting infinitesimally thin walls and a hollow body. (c) Anatomy of the lumbar vertebrae [33].
