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Melt Electrospinning Writing of Three-dimensional Poly(ε-caprolactone) Scaffolds with Controllable Morphologies for Tissue Engineering Applications
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3D-Braided Poly-ε-Caprolactone-Based Scaffolds for Ligament Tissue Engineering.

Caroline Emonts1, David Wienen1, Benedict Bauer1

  • 1Institut für Textiltechnik (ITA), RWTH Aachen University, 52074 Aachen, Germany.

Journal of Functional Biomaterials
|November 22, 2022
PubMed
Summary

New biodegradable scaffolds made from poly-ε-caprolactone (PCL) show promise for anterior cruciate ligament (ACL) reconstruction. These 3D-braided PCL scaffolds mimic native ACL mechanical properties and are suitable for surgical implantation.

Keywords:
3D braidinganterior cruciate ligament (ACL)ligament repairpoly-ε-caprolactone (PCL)textile scaffoldtissue engineering

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Tissue Engineering

Background:

  • Anterior cruciate ligament (ACL) injuries are common and often require surgical reconstruction due to poor natural healing.
  • Existing graft options have limitations, driving the need for advanced tissue-engineered solutions.
  • Effective ACL tissue engineering scaffolds must possess suitable mechanical strength, porosity for cell infiltration, and biodegradability.

Purpose of the Study:

  • To investigate long-term biodegradable poly-ε-caprolactone (PCL)-based scaffolds fabricated using a 3D hexagonal braiding technique for anterior cruciate ligament (ACL) replacement.
  • To characterize the mechanical and morphological properties of these PCL scaffolds.

Main Methods:

  • Fabrication of PCL-based scaffolds using a 3D hexagonal braiding technique.
  • Mechanical testing to evaluate tensile load capacity.
  • Morphological analysis to assess scaffold structure and porosity.
  • Comparison of scaffold properties against native ACL parameters.

Main Results:

  • All fabricated PCL scaffolds demonstrated mechanical tensile load capacity equivalent to the native ACL.
  • The diameter of the scaffolds was suitable for implantation using established surgical techniques.
  • The 3D hexagonal braiding technique provided high geometrical freedom for scaffold architecture development.

Conclusions:

  • 3D-braided PCL scaffolds are a promising biomaterial for anterior cruciate ligament (ACL) tissue engineering.
  • The developed scaffolds meet key requirements for ACL reconstruction, including mechanical integrity and implantability.
  • The 3D hexagonal braiding technique allows for tailored scaffold design for orthopedic applications.