Analysis of tibial curvature, fibular loading, and the tibia index

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Funk, J. R.¹; Rudd, R. W.²; Kerrigan, J. R.²; Crandall, J. R.²

Analysis of tibial curvature, fibular loading, and the tibia index

Proceedings of the 2003 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Biodynamic Research Corporation (USA)

²University of Virginia Center for Applied Biomechanics
Abstract and keywords

The tibia index (TI) is commonly used to predict leg injury based on measurements taken by an anthropomorphic test device (ATD). The TI consists of an interaction formula that combines axial loading and bending plus a supplemental compressive force criterion. Current ATD lower limbs lack geometric biofidelity with regard to tibial curvature and fibular load-sharing. Due to differences in tibial curvature, the midshaft moments induced by axial loading are different in humans and ATDs. Midshaft tibial loading in the human is also reduced by load-sharing through the fibula, which is not replicated in current ATDs. In this study, tibial curvature and fibular load-sharing are quantified through CT imaging and biomechanical testing, and equations are presented to correct ATD measurements to reflect the loading that would be experienced by a human tibia.

Keywords: Biomechanics; Biofidelity; Dummies; Injury Criteria; Legs

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Cited By (4)

Year	Entry
2015	Takahashi Y, Asanuma H, Yanaoka T. Development of a full‐body human FE model for pedestrian crash reconstructions. In: Proceedings of the 2015 International IRCOBI Conference on the Biomechanics of Injury. September 9-11, 2015; Lyon, France.530-545.
2011	Bing JA. Pediatric Lower Extremities: Potential Risks and Testing Concepts [Master's thesis]. The Ohio State University; 2011.
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2005	Rudd RW. Injury Tolerance of the Human Ankle in Impact-Induced Dorsiflexion [PhD thesis]. Charlottesville, VA: University of Virginia; January 2005.