title: Biofidelity Evaluation of a Prototype Hybrid III 6 Year-Old ATD Lower Extremity.
abstract: Incomplete instrumentation and a lack of biofidelity in the extremities of the 6 year-old anthropomorphic test device (ATD) pose challenges when studying regions of the body known to interact with the vehicle interior. This study sought to compare a prototype Hybrid III 6 year-old ATD leg (ATD-LE), with a more biofidelic ankle and tibia load cell, to previously collected child volunteer data and to the current Hybrid III 6 year-old ATD (HIII). Anthropometry, range of motion (ROM), and stiffness measurements were taken, along with a dynamic evaluation of the ATD-LE using knee-bolster airbag (KBA) test scenarios. Anthropometry values were similar in eight of twelve measurements. Total ankle ROM was improved in the ATD-LE with no bumper compared to the HIII. The highest tibia moments and tibia index values were recorded in KBA scenarios when the toes were positioned in contact with the dashboard prior to airbag deployment, forcing the ankle into axial loading and dorsiflexion. While improvements in the biofidelity of the ATD-LE are still necessary, the results of this study are encouraging. Continued advancement of the 6 year-old ATD ankle is necessary to provide a tool to directly study the behavior of the leg during a motor vehicle crash.
authors: Injury Biomechanics Research Center, Division of Anatomy, The Ohio State University, 279 Hamilton Hall, 1645 Neil Avenue, Columbus, OH, 43210, USA. Laura.Boucher@osumc.edu.
authors: Laura C
authors: 0000-0002-4770-9522
authors: LC
authors: Boucher
authors: Injury Biomechanics Research Center, Division of Anatomy, The Ohio State University, 279 Hamilton Hall, 1645 Neil Avenue, Columbus, OH, 43210, USA.
authors: Julie
authors: J
authors: Bing
authors: Injury Biomechanics Research Center, Division of Anatomy, The Ohio State University, 279 Hamilton Hall, 1645 Neil Avenue, Columbus, OH, 43210, USA.
authors: John H
authors: JH
authors: Bolte
mesh_terms: D000063:Accidents, Traffic; D000842:Ankle; D001186:Artificial Limbs; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D016059:Range of Motion, Articular
keywords: Ankle; Biofidelity; Children; Crash test dummy; Injury; Leg; Range of motion