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Treatment of Osteochondral Defects in the Rabbit's Knee Joint by Implantation of Allogeneic Mesenchymal Stem Cells in Fibrin Clots
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Scaffold-Based Tissue Engineering Strategies for Osteochondral Repair.

Jiang-Nan Fu1,2, Xing Wang3,4, Meng Yang1,2

  • 1Department of Sports Medicine, Peking University Third Hospital, Beijing, China.

Frontiers in Bioengineering and Biotechnology
|January 28, 2022
PubMed
Summary

Osteochondral (OC) tissue engineering seeks to regenerate biomimetic tissue using various scaffolds. Current strategies face challenges due to tissue complexity and material limitations, hindering satisfactory OC defect repair.

Keywords:
biomaterialsfabricationosteochondral repairscaffoldstissue engineering

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Osteochondral (OC) tissue engineering aims to create biomimetic tissue for defect repair.
  • Scaffolds are crucial for supporting cell growth and differentiation in tissue engineering.
  • Various scaffold types (porous, hydrogel, fibrous, etc.) have been explored for OC regeneration.

Purpose of the Study:

  • To review advances in osteochondral tissue engineering.
  • To discuss challenges in achieving satisfactory OC defect repair.
  • To focus on scaffold design strategies for improved OC regeneration.

Main Methods:

  • Summarizing the complex gradients of natural osteochondral tissue.
  • Discussing diverse osteochondral tissue engineering strategies.
  • Analyzing scaffold design, cell sources, materials, fabrication, and function.

Main Results:

  • Numerous scaffold types have been evaluated for OC tissue regeneration in vitro and in vivo.
  • Despite advances, stable and satisfactory OC defect repair remains elusive.
  • Limitations stem from tissue complexity and manufacturing/biomaterial constraints.

Conclusions:

  • Effective osteochondral tissue engineering requires addressing complex tissue gradients.
  • Scaffold design, cell sourcing, material selection, and fabrication are key areas for improvement.
  • Further research is needed to overcome current limitations for successful OC defect repair.