A-Wounds caused by sharp instruments:

1
A-Wounds caused by sharp instruments

• Incised (Cut) wounds.
• Stab wounds.
• Stab penetrating wounds.
• Transfixing wounds.
• Defense wounds

2
I-Incised (cut) wound

• Definition
• Characters
• 1- The edges
• 2- The length
• 3- Gaping of the edges
• 4- Bleeding
• 5- Liability to sepsis
• 6- Healing

3
Its age can be determined to know the time of its
infliction by histological examination

• 30 minutes 4 hours
• Margination of polymorph nuclear leucocytes
• 48 hours
• Pus may be present if sepsis occurs.
• 10-15 days
• Complete healing by primary intention if no
  sepsis.
• 3 weeks Red scar .
• 3 months Scar becomes coppery.
• 6 months Scar is thin and pale,

4
Stab wound

• Definition
• Unibladed knife or Bibladed knife
• Characters
• More deep than long
• The edges
• The shape of the wound may be changed if
• They are very dangerous
• A broken tip of the weapon may be found in the
  wound .

5
Types of stab wounds

1. Ordinary stab wounds .
2. Punctured wounds
3. Penetrating wounds (3PMS)
4. Transfixing wounds

6
Fabricated wound

• Definition
• Characters
• Defense wounds
• Definition
• 1- Injuries sustained by grasping the weapon
• 2- Injuries sustained during raising the hand

7
2- Wounds caused by blunt instruments

• Abrasions.
• Bruises (contusion).
• Lacerations.

8
Abrasion

• Definition
• Causative instrument
• Types
• linear
• Sliding
• Pressure
• Impact
• Bite

9
ML importance of abrasions

1. Violence
2. Its shape
3. Its site
4. Its age
5. Cut and contused wounds

10
Contusions

• Definition
• Types
• Factor affecting size
• ML importance

11
Contused wounds

• Definition
• Characters
• Deference between cut and contused W