Implications of Tissue Engineering for Tendon Repair and Regeneration

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Tendon injuries affect millions of people globally and are among the most prevalent musculoskeletal conditions, frequently resulting in chronic pain, reduced mobility, and functional impairment. While conservative and surgical treatments are available, limitations such as low healing capacity, scar formation, and reduced biomechanics necessitate alternative approaches. Tissue engineering offers a promising solution by combining cells, scaffolds, and bioactive molecules to regenerate tendon tissue. This review presents key concepts and emerging trends, highlighting the cellular components, scaffold materials, and manufacturing processes. Tenocytes and mesenchymal stem cells are fundamental for tissue regeneration, as they synthesize extracellular matrix components and regulate inflammatory responses. Various natural and synthetic polymers have been fabricated into scaffolds that mimic the structure and biomechanics of natural tendons. Composite and hybrid scaffolds are utilized to improve the biocompatibility of natural materials with the mechanical stability of synthetic materials. Advanced technologies, such as electrospinning, freeze-drying, and 3D bioprinting, enable the creation of scaffolds with defined architecture and functional gradients, improving cell alignment, differentiation, and tendon-bone integration. Although promising preclinical data exists, major challenges

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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