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J Emerg Med. 2010 Jul;39(1):113-8. doi: 10.1016/j.jemermed.2008.08.024. Epub 2009 Feb 13.

Comparison of methods for identifying ano-genital injury after consensual intercourse.

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1
Department of Family and Community Medicine, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Abstract

BACKGROUND:

Microtrauma occurs after consensual intercourse. Understanding the injury pattern from consensual intercourse may enlighten our understanding of the ano-genital injury after sexual assault.

OBJECTIVE:

The purpose of this report is to compare consensual intercourse-related ano-genital injury prevalence by using three different forensic examination techniques: 1) direct visual inspection, 2) colposcopy, and 3) toluidine-blue contrast application.

METHODS:

Using a descriptive, comparative design, 120 female volunteers, aged 21 years or older, were examined after consensual sexual intercourse using the above techniques. Ano-genital injuries were noted using the TEARS classification (Tears, Ecchymoses, Abrasions, Redness, and Swelling).

RESULTS:

Direct visualization and colposcopy yielded similar ano-genital injury findings. However, more tears and abrasions of the external genitalia were identified with toluidine-blue than with direct visual inspection or colposcopy (p < 0.05). More tears were identified on the anus with toluidine-blue as compared to direct visualization (p < 0.05), but not colposcopy. Fewer ecchymoses were identified on the internal genitalia and fewer areas of redness were identified on both the external and internal genitalia when toluidine-blue was used, as compared to either direct visualization or colposcopy (p < 0.05).

CONCLUSIONS:

The scientific community needs to continue to build information about ano-genital injury prevalence after consensual sexual intercourse. Understanding the ano-genital injury patterns, including frequency and prevalence, that occur with consensual sexual intercourse will help to identify the difference between injury related to consensual vs. non-consensual sexual intercourse. At this time, toluidine-blue staining may add value to the sexual assault forensic examination. It is the health care provider's role to collect all possible evidence and the courts' role to determine what evidence is admissible and to ensure a rightful conviction.

PMID:
19217245
PMCID:
PMC2917333
DOI:
10.1016/j.jemermed.2008.08.024
[Indexed for MEDLINE]
Free PMC Article
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