Document Detail


Biomechanic study of the human liver during a frontal deceleration.
MedLine Citation:
PMID:  17033551     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Mechanisms of hepatic injury remain poorly understood. Surgical literature reports some speculative theories that have never been proved. The aim of this study was to examine the behavior of the liver during brutal frontal deceleration. METHODS: Six trunks, removed from human cadavers, underwent free falls at 4, 6, and 8 meters per second (mps). Accelerometers were positioned in the two lobes of the liver, in front of the vertebra L2, and in the retro hepatic inferior vena cava. Relative motions of the lobes of the liver and of the two other anatomic marks were observed. In parallel, numerical simulations of this experiment have been performed using a finite element model. RESULTS: In the direction of impact, the vertebra L2 had no considerable displacement with the inferior vena cava. There was a noteworthy displacement between the two hepatic lobes. The left hepatic lobe had a large relative displacement with the vertebra L2 and the inferior vena cava. The right hepatic lobe was more stable with the vertebra L2 and the inferior vena cava. Numerical simulation of the same protocol underlined a rotation effect of the liver to the left around the axis of the inferior vena cava. CONCLUSIONS: These results support the surgical data. They highlight a crucial zone and explain how dramatic lacerations between the two lobes of the liver can occur.
Authors:
Nicolas Cheynel; Thierry Serre; Pierre-Jean Arnoux; Patrick Baque; Laurent Benoit; Stephane-Victor Berdah; Christian Brunet
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of trauma     Volume:  61     ISSN:  0022-5282     ISO Abbreviation:  J Trauma     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-11     Completed Date:  2006-11-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376373     Medline TA:  J Trauma     Country:  United States    
Other Details:
Languages:  eng     Pagination:  855-61     Citation Subset:  AIM; IM    
Affiliation:
Laboratory of Applied Biomechanics, UMRT24/INRETS/University of Méditerranée, Marseille, France.
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MeSH Terms
Descriptor/Qualifier:
Aged
Biomechanics
Deceleration / adverse effects*
Female
Humans
Liver / injuries*
Male
Models, Biological*

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