Topographical and Compositional Gradient Tubular Scaffold for Bone to Tendon Interface Regeneration

Published in Pharmaceutics, vol. 14(10), 2153 (2022) · MDPI · Open access, CC BY
DOI: 10.3390/pharmaceutics14102153

Summary

The enthesis - where tendon meets bone - is a graded tissue in which fibrocartilage blends into mineral, and that gradient is precisely why it tears: the stiffness mismatch between soft tissue and hard bone concentrates stress, and surgical reconstructions frequently fail in the same place. This study develops a tubular scaffold based on pullulan and chitosan with a deliberate topographical and compositional gradient, so that the implant reproduces the transition instead of forcing an abrupt junction between materials of very different stiffness.

Authors & Affiliations

  • Eleonora Bianchi
    Department of Drug Sciences, University of Pavia, Italy
  • Angela Faccendini
    Department of Drug Sciences, University of Pavia, Italy
  • Elena Del Favero
    Department of Medical Biotechnology and Translational Medicine, University of Milan, Italy
  • Caterina Ricci
    Department of Medical Biotechnology and Translational Medicine, University of Milan, Italy
  • Laura Caliogna
    Orthopaedics, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
  • Barbara Vigani
    Department of Drug Sciences, University of Pavia, Italy
  • Francesca C. Pavesi
    Orthopaedics, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
  • Cesare Perotti
    Immunohaematology and Transfusion Service, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy

Linari Electrospinning Systems

Electrospinning Starter Kit STKIT-40
The tubular scaffolds were produced on an STKIT-40 system (Linari Engineering) with a 40 kV high voltage power supply, a 10 cc syringe and a 21 G stainless steel needle - see our Electrospinning Starter Kit, control unit HVG-CONT-LCD.

Topics

Bone-Tendon Interface Gradient Scaffolds Tubular Structures Enthesis Regeneration

Materials

Pullulan Chitosan
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