Ultrasonic Measurement of Thicknesses of Bone and Bone Marrow within. Femur Inserted with a Metal Stem

概要

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The thicknesses of the bone and the bone marrow region within a pig femur inserted with a metal stem of the total hip replacement system are investigated nondestructively by means of an ultrasonic pulse echo technique. First, the wave velocities through bone and bone marrow are determined using an ultrasonic wave which enables observation of the time intervals between the first and second echoes in these specimens. Next, the ultrasonic wave is emitted toward the femur with the metal stem, which was immersed in a water tank, and the distances from a normal probe to the boundary surfaces of the bone and the metal stem are measured. Subsequently, the exact thicknesses of the bone and the bone marrow region are measured using vernier calipers. The results of the ultrasonic wave and vernier caliper measurements are graphically presented and compared. The ultrasonic method is found to be applicable for the proposed purpose.
一般社団法人日本機械学会の論文
1994-04-15