Hydrogel composite scaffold repairs knee cartilage defects: a systematic review

Area of Science:

• Biomaterials Science
• Orthopedic Surgery
• Tissue Engineering

Background:

• Increasing incidence of knee joint cartilage defects necessitates advanced treatment strategies.
• Hydrogels are favored biomaterials for tissue engineering due to biocompatibility and tunable properties.
• Monolithic materials struggle to replicate articular cartilage's complex zonal structure, driving innovation in composite scaffolds.

Purpose of the Study:

• To review the structure of the knee joint and surgical options for cartilage defects.
• To discuss the properties, functions, and preparation of hydrogel composite scaffolds.
• To examine the application of these scaffolds in knee cartilage defect repair and future prospects.

Main Methods:

• Literature review of knee joint anatomy and surgical interventions.
• Analysis of physical properties, biological functions, and fabrication techniques of hydrogel composite scaffolds.
• Review of current research on hydrogel composite scaffold applications for knee cartilage defects.

Main Results:

• Hydrogel composite scaffolds offer improved mimicry of articular cartilage's zonal organization compared to monolithic materials.
• Various types of hydrogel composite scaffolds exhibit distinct properties suitable for different cartilage repair needs.
• These scaffolds demonstrate significant potential in addressing knee cartilage defects.

Conclusions:

• Hydrogel composite scaffolds represent a significant advancement in tissue engineering for knee cartilage repair.
• Further research and development are needed to optimize scaffold design and clinical application.
• The future prospects for hydrogel composite scaffolds in treating knee cartilage defects are promising.