Computational modeling and analysis of thoracolumbar spine fractures in frontal crash reconstruction

Traffic Injury Prevention
Xin YeAshley A Weaver

Abstract

This study aimed to reconstruct 11 motor vehicle crashes (6 with thoracolumbar fractures and 5 without thoracolumbar fractures) and analyze the fracture mechanism, fracture predictors, and associated parameters affecting thoracolumbar spine response. Eleven frontal crashes were reconstructed with a finite element simplified vehicle model (SVM). The SVM was tuned to each case vehicle and the Total HUman Model for Safety (THUMS) Ver. 4.01 was scaled and positioned in a baseline configuration to mimic the documented precrash driver posture. The event data recorder crash pulse was applied as a boundary condition. For the 6 thoracolumbar fracture cases, 120 simulations to quantify uncertainty and response variation were performed using a Latin hypercube design of experiments (DOE) to vary seat track position, seatback angle, steering column angle, steering column position, and D-ring height. Vertebral loads and bending moments were analyzed, and lumbar spine indices (unadjusted and age-adjusted) were developed to quantify the combined loading effect. Maximum principal strain and stress data were collected in the vertebral cortical and trabecular bone. DOE data were fit to regression models to examine occupant positioning and thoraco...Continue Reading

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Citations

Aug 10, 2020·Computers in Biology and Medicine·Sorosh AmiriMohamad Parnianpour
Nov 19, 2021·Frontiers in Bioengineering and Biotechnology·L PachockiW Witkowski

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Software Mentioned

Solara
CDS
NASS
CIREN

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