The effect of tibial curvature and fibular loading on the tibia index

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Funk, James R.¹; Rudd, Rodney W.²; Kerrigan, Jason R.²; Crandall, Jeff R.²

The effect of tibial curvature and fibular loading on the tibia index

Traffic Inj Prev. June 2004;5(2):164-172

©2004 Taylor & Francis Inc.

Affiliations

¹Biodynamic Research Corporation, San Antonio, Texas, USA

²University of Virginia Center for Applied Biomechanics, Charlottesville, Virginia, USA
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; Tibia Index; Lower Extremity
Links

DOI: 10.1080/15389580490436069

PubMed: 15203953
History

Received: 2003-09-30

Accepted: 2003-12-10

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2021	Ghasem-Zadeh A, Galea MP, Nunn A, Panisset M, Wang X-F, Iuliano S, Boyd SK, Forwood MR, Seeman E. Heterogeneity in microstructural deterioration following spinal cord injury. Bone. January 2021;142:115778.
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