Bone health: Quality versus quantity.

Area of Science:

• Orthopedics and Musculoskeletal Health
• Pediatric Bone Biology
• Biomaterials Science

Background:

• Bone health relies on extracellular matrix characteristics, influencing resistance to deformation and fracture.
• Pediatric bone diseases disrupt matrix regulation, leading to compromised bone quality and fragility.
• Bone's hierarchical structure, remodeling dynamics, and microdamage response are key to its mechanical properties.

Purpose of the Study:

• To review the roles of bone quality and quantity in pediatric bone health.
• To highlight current and future clinical methods for assessing bone health in children.
• To emphasize the need for incorporating bone quality into fracture risk assessment.

Main Methods:

• Review of scientific literature on bone quality, quantity, and fragility.
• Analysis of laboratory bone analysis techniques (biopsies, animal models).
• Evaluation of current clinical measurements and their limitations.

Main Results:

• Bone quality, alongside quantity, is essential for fracture resistance.
• Current clinical methods, primarily DEXA scans measuring bone mineral density, inadequately predict fracture risk.
• Pediatric bone diseases significantly impair bone quality, increasing fracture vulnerability.

Conclusions:

• Fracture risk calculation should integrate both bone structure and composition, not solely bone quantity.
• Advanced clinical tools are necessary to predict fracture risk by considering bone quality.
• Further research is needed to identify clinically applicable bone quality characteristics for fragility prediction.