fig4

Figure 4. The regulation of mechanical performances by the structures of scaffolds. (A) Optical microscope images exhibiting different diameters and numbers of Haversian canals. Scale bars, 1 mm. (B) Micro-CT images of Volkmann canals (blue arrows) connecting Haversian canals in the interior of scaffolds. Scar bars, 1 mm. (C) Micro-CT images of scaffolds with different numbers of Haversian canals. Scar bars, 1 mm. (D) The compressive strength of scaffolds with different numbers of Haversian canals. (E) Porosity of scaffolds with different numbers of Haversian canals. (F) Micro-CT images of scaffolds with different diameters of Haversian canals are indicated by blue arrows. Scar bars, 1 mm. (G) Compressive strength of scaffolds with different diameters of Haversian canals. (H) Porosity of scaffolds with different diameters of Haversian canals. (I) Micro-CT images of scaffolds with different numbers of Volkmann canals. Scar bars, 1 mm. (J) Compressive strength of scaffolds with different numbers of Volkmann canals. (K) Porosity of scaffolds with different numbers of Volkmann canals. Reproduced with permission^[70]. Copyright 2020, American Association for the Advancement of Science. *P < 0.05, **P < 0.01, ***P < 0.001.