Simulation analysis for effects of bone loss on acceleration tolerance of human lumbar vertebra |
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| Authors: | Honglei Ma Feng Zhang Yu Zhu Yanhua Xiao Abrar Wazir |
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| Institution: | 1. State Key Lab of Space Medicine Fundamentals and Apply, China Astronaut Research and Training Center, Beijing 100094, China;2. Laboratory of Advanced Materials Behavior Characteristics, Beijing Institute of Technology, Beijing, 100193, China;3. Department of Biomedical Engineering, Wayne State University, MI 48202, USA |
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| Abstract: | The purpose of the present study was to analyze and predict the changes in acceleration tolerance of human vertebra as a result of bone loss caused by long-term space flight. A human L3–L4 vertebra FEM model was constructed, in which the cancellous bone was separated, and surrounding ligaments were also taken into account. The simulation results demonstrated that bone loss has more of an effect on the acceleration tolerance in x-direction. The results serve to aid in the creation of new acceleration tolerance standards, ensuring astronauts return home safely after long-term space flight. This study shows that more attention should be focused on the bone degradation of crew members and to create new protective designs for space capsules in the future. |
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| Keywords: | Space flight Human vertebra Bone loss Acceleration tolerance |
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