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Updated: May 12, 2026
09:32
Human Cartilage Tissue Fabrication Using Three-dimensional Inkjet Printing Technology
Published on: June 10, 2014
15.7K
Biological Reinforced Concrete for Cartilage Repair With 3D Printing
Yuewei Chen1,2, Tao Fu3,4, Zhongfei Zou5
1School of Mechanical Engineering, Guizhou University, Guiyang, 550025, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|February 25, 2025
Summary
Researchers created "biological reinforced concrete" for cartilage repair. This biomimetic cartilage successfully regenerated natural articular cartilage (NAC) in defects, offering a new tissue regeneration strategy.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Natural articular cartilage (NAC) regeneration is challenging due to its complex structure, low cellularity, and poor vascularity.
- Existing biomimetic cartilage constructs (BCCs) struggle to replicate the native extracellular matrix (ECM) microenvironment and topological cues.
- Developing effective BCCs requires mimicking NAC's intricate composition and mechanical properties.
Purpose of the Study:
- To develop a novel biomimetic cartilage construct (BCC) inspired by reinforced concrete structures.
- To replicate the natural extracellular matrix (ECM) microenvironment and complex topological cues of natural articular cartilage (NAC).
- To evaluate the efficacy of the developed BCC in reconstructing osteochondral defects.
Main Methods:
- Fabrication of a biomimetic cartilage using 3D-printed ultrafine fiber networks (UFNs) as 'biorebars' and a hybrid biohydrogel as 'biocement'.
- Incorporation of stem cells as 'bioactive aggregates' within the construct.
- Optimization of UFN scale and spacing to match NAC's mechanical properties and guide cell growth and ECM secretion.
- Implantation of the BCC into an osteochondral defect model.
Main Results:
- The fabricated biomimetic cartilage successfully replicated the ECM microenvironment and collagen fiber orientation of NAC.
- Adjusting UFN parameters allowed for control over the construct's mechanical properties, mimicking NAC.
- Implantation into osteochondral defects resulted in successful cartilage reconstruction after 4 months.
- The regenerated cartilage exhibited mechanical properties closely resembling those of NAC.
Conclusions:
- The 'biological reinforced concrete' approach provides a customizable and universal strategy for cartilage tissue regeneration.
- This novel biomimetic strategy effectively addresses the challenges associated with reconstructing complex cartilage structures.
- The developed BCC demonstrates significant potential for clinical applications in treating cartilage defects.
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