Bone quality assessment techniques: geometric, compositional, and mechanical characterization from macroscale to...

Area of Science:

• Biomedical Engineering
• Orthopedics
• Materials Science

Background:

• Bone quality, encompassing geometric and material factors, is critical for fracture resistance.
• Areal bone mineral density (aBMD) from dual-energy x-ray absorptiometry has limitations in fully assessing fracture risk.
• Comprehensive characterization of bone quality is needed to complement aBMD measurements.

Purpose of the Study:

• To review experimental techniques for evaluating bone quality.
• To summarize methods for characterizing geometric, compositional, and mechanical bone properties across length scales.
• To provide a framework for integrating multiple characterization techniques for improved fracture risk assessment.

Main Methods:

• Summarized various experimental techniques for bone quality assessment.
• Discussed advantages, disadvantages, and practical considerations (e.g., sample prep, destructive testing).
• Highlighted in vivo techniques and recent advancements like high-resolution peripheral quantitative computed tomography and reference point indentation.

Main Results:

• Cataloged methods for evaluating bone's geometric, compositional, and mechanical properties.
• Provided examples of technique applications and their outcomes.
• Identified limitations of single-method approaches for bone quality assessment.

Conclusions:

• No single method can fully characterize bone quality.
• Integrating multiple characterization techniques provides a more comprehensive analysis.
• This integrated approach complements aBMD for enhanced fracture risk assessment.