Injecting hope: chitosan hydrogels as bone regeneration innovators

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Spontaneous bone regeneration is limited in bone defects, necessitating external interventions.
• Bone tissue engineering (BTE) offers alternatives to traditional bone grafts.
• Hydrogels mimic the extracellular matrix and are promising BTE scaffolds.

Purpose of the Study:

• To review chitosan (CS)-based injectable hydrogels for bone regeneration.
• To highlight their composition, production, characteristics, and applications.
• To provide a resource for future BTE scaffold development.

Main Methods:

• Review of literature on CS-based injectable hydrogels for BTE.
• Analysis of hydrogel properties: water absorption, injectability, porosity.
• Evaluation of CS hydrogels as bone graft substitutes.

Main Results:

• CS injectable hydrogels offer advantages like high water absorption and adaptability.
• Combining CS with other materials enhances graft functionality.
• CS hydrogels show potential as effective bone regeneration templates.

Conclusions:

• CS-based injectable hydrogels are a viable alternative to conventional bone grafts.
• These hydrogels present significant potential for advancing bone regeneration strategies.
• Further research can pioneer next-generation tissue-engineering scaffolds.