Tissue regeneration in orthopedic surgery - do we need cells?

Area of Science:

• Orthopedic Surgery
• Regenerative Medicine
• Biomaterials

Background:

• Tissue engineering offers methods for cartilage and meniscal tissue regeneration.
• Cell-based techniques like autologous chondrocyte transplantation (ACT) are prominent.
• Cell-free techniques are rapidly advancing, spurred by regulatory demands for efficacy proof.

Purpose of the Study:

• To review advantages and disadvantages of cell-based versus cell-free procedures.
• To summarize clinical evidence for cell-free tissue engineering in orthopedic surgery for cartilage and meniscal defects.

Main Methods:

• Systematic review of clinical human studies.
• Search focused on cell-free repair procedures for cartilage and meniscus defects.
• Included English or German language abstracts.

Main Results:

• 82 studies were initially identified.
• 12 studies met the inclusion criteria.
• Good clinical results were reported for cell-free cartilage and meniscal scaffolds.

Conclusions:

• Acellular, off-the-shelf products may gain importance.
• Improved understanding of healing processes is key.
• Cell-free approaches offer a viable alternative in orthopedic repair.