Assessment of trabecular bone tissue elasticity with resonant ultrasound spectroscopy.

摘要: The material properties of the trabeculae (tissue-level properties), together with trabecular architecture and bone volume fraction determine apparent millimetre-scale mechanical properties. We present a novel method to measure tissue elastic modulus E t using resonant ultrasound spec-troscopy (RUS). first resonance frequency f e freestanding cuboid specimen is measured used back-calculate t. steps back-calculation are (1) stiffness tensors C(˜ t) computed micro-finite elements for set trial values Young's modulus˜Emodulus˜ modulus˜E based on tomography image specimen; (2) modeled free-vibration frequencies m (˜ calculated Rayleigh-Ritz t); (3) finally, obtained by interpolation t). Four bovine specimens were tested (nominal size 5×6×6 mm 3). Average (standard deviation) was 13.12 (1.06) GPa. measurement single enabled an estimation elasticity in line available data. RUS non destructive technique relatively easy implement compared traditional testing. could contribute better documentation which important parameter element analyses * Corresponding author clinical assessment strength.