Keyhole defect

A keyhole defect is a term used in medicine and in the forensic sciences to refer to the shape of an anomalous feature or traumatic lesion caused by a gunshot wound.

Forensic investigation

A keyhole defect is characteristic of a type of entrance wound caused by a bullet striking the surface of a flat bone (typically the cranium) at a shallow angle.[1] The defect is characterized by a rounded portion with a clean margin where the bullet first perforates bone, and a wider area with external beveling on the opposite end. The keyhole entrance wound can thus indicate the trajectory of the bullet at the time of impact.

Proctology

In proctology, a keyhole defect may refer to a groove in the anal canal wall, which can occur after posterior midline fissurectomy or fistulotomy (surgical operations involving the anal canal), or with lateral internal anal sphincter defects. The keyhole defect is associated with minor degrees of fecal incontinence, allowing seepage of liquid stool or mucus.[2]

References

  1. ^ DiMaio, Vincent J.M. (2016). Gunshot Wounds: Practical Aspects of Firearms, Ballistics, and Forensic Techniques. CRC Press. p. 102.
  2. ^ Abcarian, Herand; Cintron, Jose; Nelson, Richard (2017). Complications of Anorectal Surgery: Prevention and Management. Springer. p. 115. ISBN 9783319484068. Retrieved 22 January 2018.


Stub icon

This human digestive system article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.