Engineering vascularized and innervated bone biomaterials for improved skeletal tissue regeneration

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Skeletal Biology

Background:

• Blood vessels and nerves are crucial for bone development and fracture healing.
• Current bone biomaterials lack sufficient vascular and nerve integration, creating a gap with native tissue.
• Understanding neurovascular interactions within bone is vital for developing advanced biomaterials.

Purpose of the Study:

• To highlight the structure and osteogenic functions of the vascular and nervous systems in bone.
• To discuss design criteria for engineering vascularized, innervated, and neurovascularized bone implant materials.
• To review recent advances in developing such biomaterials.

Main Methods:

• Literature review and synthesis of current research on bone neurovasculature.
• Analysis of anatomical structures and functional roles of vascular and nervous systems in bone.
• Discussion of biomaterial design principles for neurovascular integration.

Main Results:

• The vascular and nervous systems play coupled roles in bone health and regeneration.
• Successful bone regeneration requires biomaterials that support both vascular and nerve formation.
• Engineering neurovascular networks in bone implants is a promising strategy.

Conclusions:

• Biomaterials that recapitulate the complex microenvironment of skeletal tissue are needed.
• Developing bone implants with integrated neurovascular networks can improve bone regeneration.
• Further research into neurovascularized bone implant materials is essential for clinical translation.