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Related Experiment Video

Updated: Aug 7, 2025

Establishment of a Segmental Femoral Critical-size Defect Model in Mice Stabilized by Plate Osteosynthesis
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Bone Marrow Stem Cells with Tissue-Engineered Scaffolds for Large Bone Segmental Defects: A Systematic Review.

Nicolò Rossi1,2, Henrique Hadad3, Maria Bejar-Chapa2

  • 1Wellman Center for Photomedicine and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Tissue Engineering. Part B, Reviews
|March 11, 2023
PubMed
Summary

Tissue-engineered scaffolds combined with bone marrow stem cells (BMSCs) significantly improve bone regeneration in large animal models with critical-sized bone defects. This combination enhances bone formation, mineralization, and remodeling compared to scaffolds alone.

Keywords:
bioengineeringbone regenerationcritical-sized bone defectsgraftslarge animal study

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Orthopedic Research

Background:

  • Critical-sized bone defects (CSBDs) pose a major challenge in bone reconstruction.
  • Current treatments often have limitations in achieving complete bone healing.

Purpose of the Study:

  • To systematically review the efficacy of bone marrow stem cells (BMSCs) combined with tissue-engineered scaffolds for CSBD treatment.
  • To assess outcomes in large preclinical animal models.

Main Methods:

  • Systematic review of 10 in vivo large animal studies.
  • Inclusion criteria: segmental bone defects, BMSCs with scaffolds, control group, histological analysis.
  • Quality assessment using Animal Research: reporting of in Vivo Experiments and risk of bias tools.

Main Results:

  • BMSC-seeded scaffolds (autograft or allograft) significantly improved bone mineralization and formation.
  • Enhanced bone remodeling, biomechanical, and microarchitectural properties were observed.
  • Outcomes were superior to untreated and scaffold-alone groups.

Conclusions:

  • Tissue engineering strategies using BMSCs and scaffolds are effective for extensive bone defect repair in preclinical models.
  • BMSC-loaded scaffolds represent a promising therapeutic approach for bone regeneration.