This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Deflection of the Human Thorax Under Sternal Impact-La Dèformation du Thorax Humain sous Impact Sternal (Milieu du Sternum)-Verformung des Menschlichen Thorax hei Stoessen Gegen das Brustbein
Annotation ability available
Sector:
Language:
English
Abstract
For the purpose of increasing available knowledge of human dynamic response and tolerance to thoracic impact, and experimental investigation of both blunt and localized impacts to embalmed and unembalmed human cadavers is being carried out. This is a progress report to date.
Force and deflection time histories resulting from midsternal A-P impacts over a six inch diameter area and from blows localized near the costo-chrondral junctions were measured and cross plotted to provide dynamic force-deflection characteristics. The extent of skeletal damage was assessed by both radiological examination and thoracic dissection and is presented in relation to the impact parameters.
X-ray assessment of rib fracture damage was found to be inadequate, revealing on the average less than half of the fractures confirmed by dissection.
When compared with existing data for embalmed cadavers from a different source, the new results for embalmed specimens demonstrate similar skeletal damage characteristics on a deflection basis but somewhat lower associated forces and thoracic stiffness values. It is suspected that differences in embalming and subsequent storage practice relate to these findings. From the current study the stiffness of unembalmed specimens is somewhat less than that of the embalmed.
Many questions concerning human thoracic stiffness and tolerance to dynamic loading remain unanswered at this time, and the work reported here is being continued.
Recommended Content
| Technical Paper | One Component Polyurethane Coatings and Sealants: Innovative Automotive Applications |
| Technical Paper | Head and Neck Injuries in Human Cadavers From Lateral Impacts |
Authors
Topic
Citation
Nahum, A., Gadd, C., Schneider, D., and Kroell, C., "Deflection of the Human Thorax Under Sternal Impact-La Dèformation du Thorax Humain sous Impact Sternal (Milieu du Sternum)-Verformung des Menschlichen Thorax hei Stoessen Gegen das Brustbein," SAE Technical Paper 700400, 1970, https://doi.org/10.4271/700400.Also In
References
- Patrick L. M. Kroell C. K. Mertz, H. J. Jr. “Forces on the Human Body in Simulated Crashes.” Proc. of Ninth Stapp Car Crash Conference 1965
- Patrick L. M. Mertz, H. J. Jr. Kroell C. K. “Cadaver Knee Chest and Head Impact Loads.” Proc. of Eleventh Stapp Car Crash Conference 1967
- Gadd C. W. Patrick L. M. “System versus Laboratory Impact Tests for Estimating Injury Hazard.” SAE Automotive Engineering Congress Detroit, Mich. January 8-12 1968 (paper no. 680053 )
- Lasky I. I. Siegel A. W. Nahum A. M. “Automotive Cardio-Thoracic Injuries: A Medical-Engineering Analysis.” SAE Automotive Engineering Congress Detroit, Mich. January 8-12 1968 (paper no. 680052 )
- Huelke D. F. Chewning W. A. “The Energy-Absorbing Steering Column.” Highway Safety Research Institute, The University of Michigan Ann Arbor, Mich. 1968
- Patrick L. M. VanKirk D. J. “Correlation of Accident and Laboratory Impacts to Energy-Absorbing Steering Assemblies.” SAE International Automotive Engineering Congress Detroit, Mich. January 13-17 1969
- Gerhardt D. J. “Electromagnetic Instrumentation for Measurement of Human Thorax Thickness during Impact.” General Motors Research Laboratories 1968
- Gadd C. W. Nahum A. M. Gatts J. D. Danforth J. “A Study of Head and Facial Bone Impact Tolerance.” Proc. of General Motors Proving Ground Automotive Safety Seminar Milford, Mich. July 1968
- Jaffe M. H. “Anatomical and Physiological Factors Involved in the Tolerance to Rapid Accelerations.” Ohio State University 1949