Abstract
This study compared ultrasound parameters and bone mineral density (BMD) in the assessment of the mechanical properties of trabecular bone. The BMD of bovine tibial trabecular bone specimens was measured by CT scanning each specimen in all three orthogonal directions. Similarly, ultrasound velocity and attenuation measurements were also made in these directions. Specimens were then divided into three groups for mechanical testing. the ultimate strength, Young's modulus and energy absorption were measured for each specimen. It was found that BMD was independent of trabecular orientation while ultrasound velocity and attenuation values were significantly higher in the superior/inferior (SI) direction corresponding to the load bearing axis at stance. All mechanical properties were also significantly higher in the SI direction. The linear correlation demonstrated that ultrasound parameters, particularly ultrasound velocity, were better than BMD as predictors of compressive mechanical properties
Published Version
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