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Published online by Cambridge University Press: 26 February 2011
We have been involved in using several ultrasonic wave propagation techniques to study the relationship between the structure and the elastic properties of bone, both normal and pathological. Pulse through ultrasonic techniques have been used to measure the ultrasonic velocities in human, normal, osteoporotic and osteopetrotic femoral bones in vitro at 5 MHz and room temperature. An ultrasonic right-angle reflector technique has also been used on the same specimens at room temperature and 15 MHz (the third harmonic of a 5 MHz immersion type transducer). In addition, microhardness measurements have been made on the same bones from which the specimens for ultrasonic measurements were obtained.