Changes of biomechanical properties of soft tissues in underwater corpse for postmortem interval estimation / 法医学杂志
Journal of Forensic Medicine
;
(6): 6-11, 2012.
Article
Dans Chinois
| WPRIM
| ID: wpr-983703
ABSTRACT
OBJECTIVE@#To explore the postmortem changes of biomechanical properties of underwater corpses and value for estimating postmortem interval.@*METHODS@#SD rats were sacrificed by cervical vertebra dislocation and stored in the water at constant temperature. The vessel wall, skin, muscle, small intestine and colon were sampled at different postmortem time points (0h, 6h, 12h, 18h, 24h, 30h, 36h, 42h, 48h, 60h, 72h, 96h, 120h, 144h, 168h, 192h). The biomechanics properties of different soft tissues including ultimate load, strain, maximum stress were measured by electronic universal material testing machine.@*RESULTS@#Except for the vessel wall, the biomechanics properties of skin, muscle, small intestine and colon showed linear decrease gradually after death. Each tissue displayed its obvious "window period" for PMI estimation.@*CONCLUSION@#The time-sequential changes of biomechanical property parameters of soft tissue in underwater corpses are significantly correlated with PMI and it could be a simple and quantitive new technology for estimating PMI. The specific heat capacity of the heat-eliminating medium around the corpses probably is one of the physical factors to influence algor mortis, autolysis, putrefaction and biomechanics properties.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Modifications postmortem
/
Peau
/
Contrainte mécanique
/
Facteurs temps
/
Phénomènes biomécaniques
/
Cadavre
/
Mise en charge
/
Rat Sprague-Dawley
/
Anatomopathologie légale
/
Tissu élastique
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
Journal of Forensic Medicine
Année:
2012
Type:
Article
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