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Related Concept Videos

Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.

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Related Experiment Video

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Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
09:37

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

A novel bone scaffold design approach based on shape function and all-hexahedral mesh refinement.

Shengyong Cai1, Juntong Xi, Chee Kai Chua

  • 1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China.

Methods in Molecular Biology (Clifton, N.J.)
|June 14, 2012
PubMed
Summary

This study presents a novel computer-aided design for porous bone scaffolds using hexahedral mesh refinement. This method enables controlled pore size distribution for improved bone tissue engineering (TE) applications.

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Published on: September 11, 2015

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Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
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Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
09:35

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Computational Mechanics

Background:

  • Tissue engineering aims to repair or replace damaged tissues using living cells and scaffolds.
  • Bone scaffolds provide structural support for osteoprogenitor cells, crucial for bone healing and regeneration.
  • Existing bone scaffold designs often lack control over pore size distribution, which is critical for mimicking native bone structure.

Purpose of the Study:

  • To introduce a novel computational approach for designing porous bone scaffolds.
  • To enable precise control over pore size distribution and morphology within the scaffold.
  • To facilitate the fabrication of patient-specific bone scaffolds using rapid prototyping.

Main Methods:

  • Utilized shape functions from finite element analysis to create an all-hexahedral mesh.
  • Employed Boolean operations to model individual pores and generate the overall scaffold pore network.
  • Implemented hexahedral mesh refinement to control pore size distribution and morphology.
  • Converted scaffold designs into universal 3D file formats (STL/STEP) for rapid prototyping.

Main Results:

  • Successfully designed bone scaffolds with controlled, non-random pore size distributions.
  • Demonstrated that hexahedral element size directly influences pore morphology and size.
  • Fabricated the designed bone scaffolds using 3D printing (Spectrum Z510), validating the computational design approach.

Conclusions:

  • The proposed computer-aided design method offers precise control over bone scaffold architecture.
  • This approach allows for the creation of scaffolds that better mimic the native bone microenvironment.
  • The successful fabrication validates the potential of this method for advanced bone tissue engineering applications.