Foot-ankle complex injury risk curves using calcaneus bone mineral density data

Journal of the Mechanical Behavior of Biomedical Materials
Narayan YoganandanAnjishnu Banerjee

Abstract

Biomechanical data from post mortem human subject (PMHS) experiments are used to derive human injury probability curves and develop injury criteria. This process has been used in previous and current automotive crashworthiness studies, Federal safety standards, and dummy design and development. Human bone strength decreases as the individuals reach their elderly age. Injury risk curves using the primary predictor variable (e.g., force) should therefore account for such strength reduction when the test data are collected from PMHS specimens of different ages (age at the time of death). This demographic variable is meant to be a surrogate for fracture, often representing bone strength as other parameters have not been routinely gathered in previous experiments. However, bone mineral densities (BMD) can be gathered from tested specimens (presented in this manuscript). The objective of this study is to investigate different approaches of accounting for BMD in the development of human injury risk curves. Using simulated underbody blast (UBB) loading experiments conducted with the PMHS lower leg-foot-ankle complexes, a comparison is made between the two methods: treating BMD as a covariate and pre-scaling test data based on BMD. Twel...Continue Reading

References

Feb 1, 1995·Calcified Tissue International·M L BouxseinW C Hayes
Jan 4, 1998·Journal of Biomechanical Engineering·N YoganandanM Boynton
May 16, 2000·Journal of Biomechanics·N YoganandanR Seipel
Feb 25, 2003·Journal of Biomechanical Engineering·James R FunkRolf H Eppinger
Apr 4, 2006·Bone·Narayan YoganandanPurushottam Laud
Oct 14, 2014·Traffic Injury Prevention·Narayan YoganandanAniko Szabo
Jul 15, 2015·Journal of Biomechanics·Narayan YoganandanMichael Kleinberger
Oct 6, 2015·Traffic Injury Prevention·Ann M BaileyJeff R Crandall

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Citations

Feb 3, 2019·Journal of the Royal Army Medical Corps·Nicholas DeVogelF A Pintar
Jun 13, 2021·Annals of Biomedical Engineering·Liming VooDavid Drewry
Sep 11, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Sajal ChirviMichael Kleinberger

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