Dating bruises

Can one accurately date a bruise? State of the science

As red blood cells degrade within a bruise, haemoglobin breaks down into bilirubin and biliverdin , and it is these pigments that pass through a series of colour changes. As these pigments resolve, the bruise changes in shape, size and location. Colour changes tend to begin at the margins of a bruise, and thus a large collection of blood will take comparatively longer to pass through a series of colour changes. Traditionally, opinion regarding the 'age' of a bruise was based in large part on the colour of the bruise, and authors of forensic textbooks gave their own suggested 'timetable' of colour changes with time summarised in Langlois and Gresham There appeared to be a 'consensus' view that red, blue and purple were 'early' colours, greens appearing after days and yellow making a late appearance after at least 7 days. Yellow colouration appeared in bruises in calves, however, by 48 hours McCauseland and Dougherty

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Courtesy of Godoy Medical Forensics. This is a bruise and is caused by an impact with a hard object or pressure that causes the blood vessels under the skin to burst and blood to leak out into the cellular space. Typically appears as a range of colors in a localized area on the skin. Current literature states that bruises cannot be reliably dated.

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By Redaksjonen Gemini Published And the age of the marks could be a decisive factor in deciding whether or not to charge a person in the case. An interdisciplinary research team at NTNU is developing a method of dating bruises using optical technology.

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Dating of bruises in children: an assessment of physician accuracy

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Show full item record. Histologic dating of bruises in moribund infants and young children. Byard, R.

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