Abrasion

An abrasion is a superficial injury caused by friction or pressure between the epidermis and some blunt object.

Only superficial layer of the skin is involved, due to which it bleeds less and heals without scarring.

Types
  1. Scratch
  2. Graze (brush burn)
  3. Imprint or contact or patterned abrasion
  4. Friction abrasion
1. Scratch

It is a linear injury caused by a sharp object running across the skin, such as a nail.

The scratched epithelium is carried in front of the object and heaped up at the end, it indicates the direction of the object causing it.

2. Graze

When a broad surface of skin scratches against some surface, such as dragging a body on the road.

It resembles a burn –thus is also called a brush burn.

Initially there is a serrated border; and then a heaped up epithelium at the end. Distribution on the body depends on the position in which it was dragged.

3. Imprint or Contact or Patterned Abrasion

It is produced by a direct, vertical pressure by direct impact of an object on the body surface; it leaves its impression.

The shape of the object can be identified e.g.

  • Ligature mark in strangulation
  • Muzzle mark in contact fire arm injury
  • Beating (Whip marks)
  • Throttling (nail and thumb marks)
4. Friction Abrasion

These are produced by pressure of some linear object, accompanied with sliding movement.

E.g. abrasions around ligature mark in hanging and strangulatin

Anetmortem or Postmortem?
Antemortem Postmortem
Reddish brown to black in color Yellowish and translucent
Blurred margins Sharp edges
Surface is moist Surface is dry
Scab formation No scab formation
Inflammatory reaction No inflammatory reaction
Age of an Abrasion
Bright red Fresh
Red scab 12-24 hours
Reddish brown scab 2-3 days
Healing 4-7 days
Healing complete 7-10 days
Healing complete 7-10 days
Forensic Significance
  1. Site of impact –sometimes it may be the only external sign of a serious internal injury e.g. rupture of a viscera due to kick on abdomen
  2. Identification of object (in patterned abrasion)
  3. Circumstances of injury (e.g. about mouth and nose in smothering, genitals and thighs in rape)
  4. Direction of injury
  5. Time of injury

Helps in reconstruction of events

Bird Feet pattern of Abrasion

Multiple lacerations and abrasions following impact of the face with a broken car windscreen.

Check Also

Electric Injuries (Electrocution)

Damage to the tissues due to the passage of electric current is called electrical injury. …

8 comments

  1. Thank you for sharing your thoughts. I truly appreciate your efforts and
    I am waiting for your further post thanks once again.

  2. They call me Alonso Rathbun need not think appears
    a little bit quite good when you say the concept.
    Rhode Island is where he’s been living for five to ten years.

    Her job is a dentist. One of the correct things across the globe for me is badge collecting that i’m trying capital
    a career. Her husband and her maintain web-site.
    You might want to check it out: http://blackhat.community/forums/

  3. Once you enter a store and are really enticed by all the displays and styles, it is easy
    to forget about tyose thinngs you really, truly need.
    The good thing about e – Bay is that you can easily start your business as soon aas you aare ready and you can see an unbelievable amount of success.
    The only downfall of embroidery is the fact that every logo cannot bee embroidery.

    My blog; grosir tanah abang murah

  4. Nothing is too small to take notice of when it comes to running your own business.
    Cutting down the cowts of energy biills is becoming
    increasingly popular among homeowners and businesses.
    They are very happy to ppay yoou well to watch their home, whether it’s staying there overnight, oor just checking in regularly.
    But despite doing a llot oof research, a certain business ownner has a huige chance to fail if he doeds not
    have the ability to make his business grow.

    My blog :: bagaimana cara bisnis properti tanpa modal uang

  5. Typically, it is meant for grabbing the attention of a prospective customer.
    Different wholesale stores might be offering you various
    amounts of discounts. Yoou should perftorm a frequent and careful research ahout its fashion too
    make sure that you are not getting an out-dated
    data.

    Stop by myy site: grosir baju korea di jakarta cipulir

  6. Similarly, the increase iin purchasing power is balanced by reduced costs ffor the purchase
    of products and services offered at wholesale.
    When yyou buy clothess in a garage sale, you get yourself a nice
    branded clothes and aat the same time help out a neighbor.
    If you need morfe strategic techniques, research about
    it from Sale – Hoo.

    Also visit myy blog; batik harga grosir

  7. Yoou can use the same method in the marketing of the home based business and to gife your prospects fre e – Book or free special report.
    This iis usually just small scale and may require most of
    your time. For instance, you can make plans to earn 10,
    000 dollars iin the first ttwo months of your startup.
    Here is a qick look att some of the most common variables that are usesd to find thhe best
    home based business ideass for moms.

    Feel fee to surf to myy blog bisnis kecil ibu rumah tangga

  8. To gett clothing at a lowest price will help you to lessen your business overheads, thus
    have a good running business. It will bbe wise to know howw to avoid scenareios ljke this.
    Salehoo iis an online e-commerce website that contais a directory wgich comprises
    the names and contact information of thousands of wholesale sellers and drop shippers.
    This is very important for a merchant in rder for the capital invested and the hard work allotted willl not
    be turned into nothing.

Leave a Reply to glass beads jewellery Cancel reply

Your email address will not be published. Required fields are marked *