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Polyurethane in bone tissue engineering: 3D-Bioprinting Vs. electrospinning.

Seyyed Ahmad Seyyed Nasrollah1, Mobina Bazari1, Nivad Ahmadian2

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Colloids and Surfaces. B, Biointerfaces
|November 18, 2025
PubMed
Summary

Polyurethane scaffolds created via electrospinning and 3D bioprinting offer advanced solutions for bone tissue engineering. These materials provide tailored mechanical properties and microenvironments for enhanced bone repair, overcoming limitations of traditional methods.

Keywords:
3D bioprintingBone tissue engineeringElectrospinningPolyurethane

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Engineering

Background:

  • Bone injuries are a significant global health issue, with current treatments like bone fixation, allografts, and autografts having limitations.
  • Bone tissue engineering utilizes temporary scaffolds to repair bone defects, aiming to overcome the drawbacks of conventional methods.
  • Polyurethane stands out as a promising biomaterial for bone scaffolds due to its superior mechanical properties.

Purpose of the Study:

  • To review recent advancements in 3D bioprinted and electrospun polyurethane scaffolds for bone tissue engineering.
  • To highlight the advantages of these advanced scaffold fabrication techniques.
  • To identify current knowledge gaps and suggest future research directions in the field.

Main Methods:

  • Review of recent scientific literature on polyurethane scaffolds in bone tissue engineering.
  • Analysis of electrospinning and 3D bioprinting techniques for scaffold fabrication.
  • Evaluation of scaffold properties, including geometry, porosity, mechanical characteristics, and biological integration.

Main Results:

  • Electrospun and 3D bioprinted polyurethane scaffolds offer precise control over scaffold architecture and porosity.
  • These scaffolds create optimal microenvironments supporting cell adhesion, proliferation, and osteogenic differentiation.
  • Scaffolds can be customized in size and mechanical properties for patient-specific bone defect repair and can incorporate bioactive agents.

Conclusions:

  • 3D bioprinted and electrospun polyurethane scaffolds represent a significant advancement in bone tissue engineering.
  • These technologies enable the creation of personalized, mechanically robust scaffolds with tunable biological properties.
  • Further research is needed to address challenges such as incorporating cells into non-hydrogel polyurethane bioinks and developing 3D cell culture models for electrospun scaffolds.