Image Based Question-65912

Identify the type of injury shown in the photograph below ?

A. Graze abrasion.

B. Imprint abrasion.

C. Electric burn.

D. Arborescent burn.

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Correct Answer » A Explanation

Ans:A. Graze Abrasion.

Abrasion

• A wound consisting of superficial damage to the skin.
• Types:
• Scratch abrasion

1. Synonym: linear abrasion
2. Sharp or pointed object not sharp enough to cause incised wound, but pointed enough to scratch
3. E.g. thorn, fingernails, tip of knife
4. Clean area at the start of the wound and tags at the end
5. Helps in determining the direction of force

Graze abrasion

1. Synonyms: grinding or sliding abrasions, brush burns
2. Most common type – Commonly seen in road traffic accidents
3. Occurs when the skin is rubbed (friction) against some rough surface
4. Uneven, longitudinal parallel lines of abrasion are seen
5. Epithelium heaped up at the end of these lines which indicates the direction of force

• Pressure abrasion

1. Synonym: crushing abrasion
2. Sustained pressure of a rough object at 90° – crushing of the superficial layers of the

• skin

1. No force on impact, but sustained pressure after the object comes in contact with body surface
2. E.g. Ligature mark in hanging and strangulation

• Impact abrasions

1. Synonym: Contact abrasion or Imprint abrasion
2. There is a moment of forceful impact, after that no contact of the object with body
3. E.g: radiator grill mark, tyre tread marks seen in RTA

• Impact abrasions and Pressure abrasions – Patterned abrasions (as the pattern of the object causing the abrasion is reproduced on the body surface)