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Layered Scaffolds for Osteochondral Tissue Engineering.

Diana Ribeiro Pereira1,2, Rui L Reis1,2,3, J Miguel Oliveira4,5,6

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Summary
This summary is machine-generated.

Repairing osteochondral defects remains challenging. Recent advancements in osteochondral tissue engineering (OCTE) focus on layered scaffolds for functional regeneration, with promising clinical trials underway.

Keywords:
Functional OC regenerationHierarchical scaffoldsMultilayered scaffoldsOsteochondral defectsTissue integration

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Orthopedic Surgery

Background:

  • Osteochondral (OC) defects pose significant challenges for tissue engineers and orthopedic surgeons.
  • Current osteochondral tissue engineering (OCTE) strategies show variable clinical outcomes due to the complexity of OC tissue.
  • Significant progress has been made in developing strategies for OC regeneration over the past decade.

Purpose of the Study:

  • To summarize current OCTE strategies, emphasizing hierarchical and layered scaffold designs.
  • To review intrinsic properties of various scaffold candidates for OC regeneration.
  • To document recent advancements and clinical trials in OC regeneration.

Main Methods:

  • Review of hierarchical scaffold design, particularly layered scaffolds.
  • Analysis of monophasic and layered scaffold candidates for functional OC tissue regeneration.
  • Compilation of data from in vitro and in vivo studies on OCTE strategies.

Main Results:

  • Layered scaffolds show promise as suitable candidates for functional OC regeneration.
  • Various strategies, with their intrinsic properties, are suitable for bare scaffold or biologic-combination applications.
  • Recent studies (past 5 years) and ongoing clinical trials demonstrate progress in OC regeneration.

Conclusions:

  • Hierarchical and layered scaffold design is a key focus for successful OCTE.
  • A variety of scaffold strategies exist for bare or combined biologic applications.
  • Ongoing research and clinical trials indicate a positive trajectory for functional OC defect repair.