Effect of Mesenchymal Stem Cell Application on the Distracted Bone Microstructure: An Experimental Study

Area of Science:

• Orthopedics and Regenerative Medicine
• Biomaterials Science
• Cell Biology

Background:

• Distraction osteogenesis (DO) is a surgical method for bone regeneration.
• Improving bone quality and quantity in DO remains a clinical challenge.
• Mesenchymal stem cells (MSCs) are investigated for their regenerative potential.

Purpose of the Study:

• To evaluate the efficacy of MSCs in enhancing bone quality and quantity during DO.
• To assess the impact of MSCs on bone mineralization and healing rates.

Main Methods:

• The study involved 12 goats, divided into a study group (DO with MSCs) and a control group (DO alone).
• Bone quality was assessed using energy dispersive X-ray (EDX), scanning electron microscopy (SEM), and histomorphometry.
• Histologic analysis included measuring trabecular bone thickness and osteoid percentage.

Main Results:

• While EDX showed a non-significant increase in calcification with MSCs, histomorphometry revealed a significant increase in trabecular bone thickness (P=.0039).
• Osteoid percentage significantly decreased in the MSC group (P=.0001), indicating accelerated bone healing.
• SEM analysis suggested increased crystal density in the MSC group.

Conclusions:

• MSCs significantly improved bone quality and accelerated healing in distraction osteogenesis.
• The findings suggest MSCs are a promising adjunct for enhancing bone regeneration in DO.
• Further research may explore optimizing MSC delivery for clinical applications.