2. INCISED WOUND
An incised wound is a clean cut through the
tissues, caused by sharp edged weapons.
The wound is longer than it is deep.
The force is delivered over a very narrow area,
corresponding with the cutting edge of the
blade.
5. Causes
Striking the body with the edge of sharp cutting
weapon.
By drawing the weapon, against the body surface.
By using the weapon like a saw in which case there
may be more than one cut in the skin at the
beginning of the wound which merge into one at
the end.
6. Characters
1. Margins
The edges are clean cut, well defined and usually
everted.
The edges may be inverted, if a thin layer of
muscle fibres is adherent to the skin as in the
scrotum.
Contusion and abrasion are absent.
7.
8. 2. Width
Width is greater than the thickness of the edge
of the blade, due to retraction of the divided
tissues.
3.Length
The length is greater than its width and depth,
and has no relation to the cutting edge of the
weapon .
There may be superficial tail at the termination
known as tailing of the wound which indicates the
direction.
9. 4. Shape
It is spindle shaped due to greater retraction of the
edges in the centre.
Gaping is greater if the underlying muscle fibres
have been cut transversely or obliquely and less if
cut longitudinally.
The wound may take zig- zag course if the skin is
loosely attached as in axillary folds because the skin
is pushed in front of the blade before it is cut.
If blade is curved, the edge will be crescentic.
If surface is convex such as occiput or buttocks,
then also shape will be crescentic.
11. 5.Haemorrhage
More bleeding due to cutting of vessels.
6.Direction
Incised wound are deeper at the beginning,
known as head of the wound .
Towards the end of the cut the wound
becomes increasingly shallow, known as the
tailing of the wound. It indicates the direction.
13. 7. Bevelling cut
• If the blade of weapon enters obliquely , the
wound will have a bevelled margin on one side
with undermining on the other side, indicating the
direction from which the blade entered.
• Bevelling can be produced by sharp weapon only.
• It is usually homicidal and indicates the relative
position of assailant and victim.
14. Age of the Incised Wound
Fresh: Haematoma formation.
12 hours: Edges are red swollen and adherent
with blood and lymph; leucocytic infiltration.
24 hours: A continuous layer of endothelial
covers the surface, overlying this a crust or scab
of dried clot is seen.
15. Histopathology
Few minutes: Dilatation of capillaries and
margination and emigration of the neutrophils.
12 hours: Reactive changes in fibroblasts,
monocyte appear in exudate, leucocyte
infiltration.
15 hours: Monocyte undergo mitotic division
24 hours: Epithelium begins to grow at the edges.
16. 72 hours: Neutrophils are replaced by
macrophages. Granulation tissue formed.
4-5 days: New fibrils are formed.
One week: Soft, reddish scar in small wounds.
In healing by secondary intension, inflammatory
reaction is more intense and much large amount
of granulation tissue is formed.
17. Wound produced by glass are lacerated but
resemble incised and stab wound.
WOUNDS BY GLASS
18. Medico-legal importance
They indicates the nature of the weapon.
Age of the injury can be determined.
They give idea about the direction of the force.
Position and character of wound may indicate
mode of production i.e. suicide, accident,
homicide.
19. Circumstances
1.Suicide
They are multiple and parallel.
They are uniform in depth and direction.
They are relatively minor.
The fatal wound are present on accessible areas .
Hesitation cuts or tentative cuts or trial wounds:
they are multiple small, and superficial involving
only the skin and are seen at the beginning of
the incised wound.
21. 2. Homicidal
They are usually multiple and can occur in any
region of the body. Wounds on the chest are
present over the wide area and are more
horizontal.
The direction is from below upwards.
Wounds on the inaccessible parts are usually
homicidal.
Wounds on nose and genitals are usually
homicidal.
22. 3. Accidental
Common in the home or at the workshop and of
minor nature.
They may be produced by knife, razor, etc.
In decomposed body it is difficult to differentiate
between laceration and incised wounds.
23. Differences between Homicidal and Suicidal
Cut throat wounds
Suicidal wounds
1.Situation: Left side of neck
2.Level: High, above the thyroid
cartilage
3.Direction: Above downwards and
from lt. to right in rt. handed person.
4.Numbers of wounds: Multiple,
superficial, parallel and merge with
main wound.
5. Edges: Usually ragged due to
overlapping of multiple superficial
incisions.
6. Hesitation cuts
Homicidal wounds
1. Usually on both sides.
2. Low, on or below the thyroid
cartilage.
3. Transverse or from below
upwards.
4. Multiple, cross each other at
deep level.
5. Sharp and clean cut.
6. Absent
24. 7. Tailing
8. Usually less severe
9. Other wounds: Often
present across the wrist, thigh,
knee but rarely on neck.
10. No defence wounds
11. Weapons in hands d/t
cadaveric spasm
12. Weapon: Present
13. Vessels: Carotid artery
escapes injury .
7. Absent
8. More severe
9. No wounds on wrist, but
several injuries on head and
neck.
10. Defence wounds
present
11. Fragments of clothing,
hair, etc. in hands.
12. Usually absent.
13. Jugular vein and carotid
artery are likely to be cut.
25. 14. Blood stains: On the mirror,
front of body and clothes, above
down wards & splashes over
feet.
15. Clothes: Not cut or damaged.
16. Circumstantial evidence :
Quiet place, locked room,
usually stands in front of mirror,
suicidal note may be found.
14. If asleep runs down on
both sides of neck.
15. May be cut,
disarranged, torn or loss of
buttons.
16. Disturbance at the
scene.
26. CHOP WOUNDS (SLASH WOUNDS)
They are deep gaping wounds.
Caused by a blow with the sharp cutting edge of
a fairly heavy weapon, like a hatchet, an axe,
sword, chopper.
Margins are sharp and may show slight abrasion
and bruising with marked destruction of
underlying tissues.
If edge is blunt, the margins are ragged and
bruised.
The undermining occurs in the direction towards
which the chop is made.
27. In the skull, the undermined edge of the fracture
defect is direction in which the force is exerted, and
the slanted edge is the side from which the force
was directed.
The wounds on the head and trunk are usually
associated with injuries to important structures and
are fatal.
28. Most of these injuries are homicidal
Accidental injuries can be caused by power
fans, airplane propellers.
Suicidal chop wound are rare.
29. Questions on incised wound
Question 1.
Depth of incised wound is greatest at the point of:
• Entry of weapon.
• Exit of weapon
• Away from weapon
• Any of the above
30. Question 2.
One of the following feature of incised wound
indicates direction of wound :
• Edge
• Tailing.
• Gapping
• Bevelling
31. Question 3.
Hesitation cuts are characterised by :
• Direction of wound
• Caused by small weapon
• Present over accessible part
• All of the above.
32. Question 4.
Incised wound over genitalia are mostly :
• Suicidal
• Homicidal.
• Accidental
• PM artefact
