Sculpting the Future of Bone: The Evolution of Absorbable Materials in Orthopedics

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)

The repair of bone defects remains a major clinical challenge, as autologous grafts are constrained by donor limitations and bioinert implants often necessitate secondary surgeries. Absorbable materials, including polymers, ceramics, and metals, are rapidly transforming orthopedic care by offering temporary support and synchronized degradation to match tissue regeneration. This review highlights cutting-edge advances in composite scaffolds that enhance mechanical integrity, degradation kinetics, and osteoinductivity. We further explore innovative systems integrating stimuli-responsive smart materials (e.g., photothermal, piezoelectric), 4D printing smart materials, regenerative therapies, and bone organoids. Emerging clinical data are discussed in the context of diseases such as osteonecrosis, osteomyelitis, and osteoporosis. Looking forward, we outline transformative directions, including AI-driven scaffold design, gradient architectures, and immunomodulatory strategies to resolve the spatiotemporal mismatch between degradation and regeneration. This review offers a forward-looking framework for next-generation multifunctional, bioresponsive orthopedic implants.

Evidence level

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

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