Bone reconstruction of large defects using bone marrow derived autologous stem cells

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Orthopedic Surgery

Background:

• Bone defects exceeding a critical size fail to heal, leading to non-union.
• Autogenous cancellous bone is the gold standard but has limitations in availability.
• Tissue engineering strategies are being developed to address the growing need for bone reconstruction.

Purpose of the Study:

• To review the potential of stromal stem cells (SSC) for bone defect reconstruction.
• To outline the challenges associated with using SSC in clinical applications.
• To discuss current approaches in SSC-based bone tissue engineering.

Main Methods:

• Review of pre-clinical and clinical protocols utilizing stromal stem cells (SSC).
• Discussion of two primary approaches for SSC application: direct transplantation and ex vivo expansion.
• Analysis of the difficulties encountered when working with SSC for bone repair.

Main Results:

• Stromal stem cells (SSC) are a promising autologous cell source for bone regeneration.
• Both direct transplantation and ex vivo expansion of SSC have potential for treating critical bone defects.
• Definitive evidence of efficacy is required to establish SSC-based therapies for non-union.

Conclusions:

• Stromal stem cells (SSC) offer a viable option for autologous bone reconstruction.
• Overcoming the practical difficulties in SSC handling and application is crucial for clinical success.
• Further research is needed to validate the efficacy of SSC in solving critical clinical problems like non-union.