Impact biomechanics of the human thorax-abdomen complex

Abstract This study was undertaken to determine the biomechanical response, due to impact, of the human thoraco-abdominal region. Seven unembalmed human male cadavers were used. All specimens were instrumented with a chest band which recorded the deformation histories, then seated on a platform with the torso rotated from right to left by 15 degrees. Dynamic loading was applied approximately at the level of the eighth rib in the anterior region on the right side using a pendulum impactor at a velocity of 4.3 ds. A uniaxial load cell and a uniaxial accelerometer were attached to the impactor. Each specimen was impacted once on the lower right thorax. Following the test, the specimen was palpated, radiographs were taken, and a detailed autopsy was conducted. Normalised force-deformation responses were computed for each specimen. Peak deformations ranged from 34.2 to 109.8 mm with the corresponding normalised chest compressions ranging from 0.16 to 0.39. Inertially compensated interface impact forces ranged ...

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