The feasibility of 3D bioprinting for bone regeneration: key challenges and future directions

Oct 13, 2025Regenerative medicine

Using 3D bioprinting to rebuild bone: main challenges and future possibilities

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Abstract

Three-dimensional bioprinting offers unprecedented control over the spatial distribution of cells and biomaterials for bone regeneration.

Bioprinting enables the production of anatomically customized grafts with complex microarchitecture and biological functionality.
Current preclinical outcomes are encouraging, yet significant challenges remain in mechanical performance and control over cellular environments.
There is a lack of standardization in bioprinting technologies, impacting the reliability of outcomes.
Trade-offs exist between printing resolution and scalability, affecting the practical application of bioprinted constructs.
No clinical trials have been conducted to investigate bioprinted bone constructs, indicating ongoing translational challenges.

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Three-dimensional (3D) bioprinting has emerged as a promising biofabrication strategy for bone regeneration, offering unprecedented control over the spatial distribution of cells, biomaterials, and bioactive cues. By enabling the production of anatomically customized grafts with microarchitectural complexity and biological functionality, bioprinting holds potential to overcome limitations associated with autografts, allografts, and synthetic bone substitutes. This review provides a comprehensive synthesis of recent advances in bioprinting technologies, bioink design, and recentandstudies targeting bone tissue engineering. Despite encouraging preclinical outcomes, the field faces significant challenges, including limited mechanical performance, control over cellular microenvironments, lack of standardization, and trade-offs between printing resolution and scalability. Notably, no clinical trials have yet investigated bioprinted bone constructs, reflecting the translational hurdles that persist. We critically discuss these gaps and propose strategic directions. Collectively, this review underscores the feasibility of 3D bioprinting for bone regeneration while highlighting the key scientific and technical milestones needed to transition from bench to bedside. in vitro in vivo

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The feasibility of 3D bioprinting for bone regeneration: key challenges and future directions

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