Neck Soft Tissue Injury Mechanism in side Blast Events

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Authors
  1. Bastien, H.
  2. Bouamoul, A.
  3. Rancourt, D.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Sherbrooke Univ, Sherbrooke Que (CAN) Groupe de recherche PERSEUS
Abstract
Injuries caused by high impact events such as side blasts and mines on light armoured vehicles (LAV) are an important concern for army forces. Side blast event is blasts (e.g. roadside bombs, improvised explosive devices) that strike the sides of vehicles. This paper presents an anatomical finite element model of the human neck used to study armour vehicle occupants. The model was used to identify which anatomical structures may suffer damage and in what order following a side blast event. A velocity profile of the torso was simulated based upon results obtained from DRDC Valcartier with a vertical drop tower. Head and vertebrae were modelled as rigid bodies and their dimensions were adjusted to accurately locate muscles and ligament attachments. Nuchal and anterior longitudinal ligaments were included because of their stabilizing role in body joints during large motions. Seven muscles groups were modelled: the trapezius, the levator scapulae, the longissimus, the longus, the scalenus, the splenius capitis and the sternocleidomastoid. Muscle models included fasciae to investigate whether fascia would play a significant role in restraining neck motion. Since fascia mechanical properties are not well documented, a sensitivity analysis was performed with the model, varying fascia stiffness to evaluate their impact on the model results. Simulation results showed that the anterior longitudinal ligament strain reaches a maximum of 20% in the C7-T1 portion and up to 100% at the CO-C
Report Number
DRDC-VALCARTIER-SL-2010-038 — Scientific Literature
Date of publication
01 Dec 2009
Number of Pages
23
DSTKIM No
CA033863
CANDIS No
533246
Format(s):
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