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Mechanical trauma = Classification

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Presentation on theme: "Mechanical trauma = Classification"— Presentation transcript:

1 Mechanical trauma = Classification
Traumatology Mechanical trauma Blunt force injury abrasions bruises or contusions lacerations Sharp force injury incised wounds stabs Fire arm injury shot gun rifled fire arm Classification =

2 Fire arms identification

3 FA identification Auto-load shot gun

4 FA identification Bolt action shot gun

5 FA identification Pump action shot gun

6 Double-barrel breech loading shot gun
FA identification Double-barrel breech loading shot gun

7 FA identification Rifled fire arms Revolver

8 Traumatology Fire arms Bisley Revolver

9 Traumatology Fire arms Pistol

10 Revolver with telescope
Traumatology Fire arms Revolver with telescope

11 Traumatology Fire arms Black hawk revolver

12 Traumatology Fire arms Parts of a cartridge

13 FA identification Cartridges shot gun rifled fire arm

14 FA identification Cartridges Revolver Rifle

15 Traumatology Fire arms Types of gun powder

16 FA identification Cartridges

17 FA identification Bullets

18 Rifled fire arm cartridges
FA identification Rifled fire arm cartridges

19 Rifled fire arm energies
FA identification Rifled fire arm energies Type of weapon Muzzle velocity V2 Difference in KE Low velocity 600 ft/s 360000 1x High velocity 900 ft/s 810000 2.3x V high velocity 1400 ft/s 5.4x Ultra high velocity 2100 ft/s 12.3x

20 FA identification Bullets Winchester bullet comparison

21 FA identification Air gun pellets

22 Traumatology Fire arms Air gun pellets

23 Shot gun fire Shots carried in a plastic cup to reduce dispersal
FA mechanism Shot gun fire Shots carried in a plastic cup to reduce dispersal

24 FA identification Trap for test patterns

25 FA identification Gun shot residue

26 Gun shot residue (GSR) A GSR grain seen under SEM X 2800
FA identification Gun shot residue (GSR) A GSR grain seen under SEM X 2800

27 FA identification Fire tank

28 Traumatology Fire arms Test firing

29 FA identification Cotton swab kit for GSR collection from wounds

30 upsetting of bullet leading to bursting of barrel
FA phenomena Fire arm phenomena upsetting of bullet leading to bursting of barrel

31 FA phenomena Fire arm phenomena cg

32 FA phenomena Fire arm phenomena

33 Tail wag or yawing of bullet
FA phenomena Fire arm phenomena Tail wag or yawing of bullet

34 FA phenomena Fire arm phenomena Tumbling of bullet

35 FA phenomena Fire arm phenomena ricochette of bullet 6o-8o

36 Fire arm phenomena Cookie cutter etching FA phenomena
main injury main injury Satellite injuries Fire arm phenomena Cookie cutter etching

37 FA phenomena Fire arm phenomena 8 ft Billiard ball ricochette 2 ft

38 Billiard ball ricochet effect
FA injury Shot gun injury Billiard ball ricochet effect

39 Spread of shots after 30 yards
FA phenomena unchoked gun Fire arm phenomena quarter choke half choke full choke Choking effect in shot guns Spread of shots after 30 yards

40 FA phenomena Fire arm phenomena Choking effect in shot guns

41 Comparison microscope
FA identification Comparison microscope

42 Comparison stereoscope
FA identification Comparison stereoscope stage showing a bullet mounted for examination

43 Comparison stereoscope
FA identification Comparison stereoscope With camera and monitor attached

44 1 2 Cartridge head comparison FA identification crime cartridge
test cartridge crime cartridge

45 Fire arm identification
Traumatology Fire arms Fire arm identification Bullet comparison

46 Gun identification Rifling marks with a twist to the right
FA identification Gun identification Rifling marks with a twist to the right

47 FA identification Bullet comparison crime bullet test bullet

48 Fire arm identification
Traumatology Fire arms Fire arm identification Crime bullet Test bullet Bullet comparison

49 Fire arm identification
Traumatology Fire arms Fire arm identification Land marks on bullet

50 FA identification Bullet comparison test bullet crime bullet 1 2

51 Cycle of fire 1 2 3 4 5 6 7 8 Feeding the cartridge Chambering Locking
FA injury Cycle of fire 1 Feeding the cartridge Chambering Locking Firing Obturation Unlocking Extraction Ejection 2 3 4 5 6 7 8

52 Traumatology Fire arms Gun identification Extractor marks

53 ‘Products of fire’ 1 flame 2 gases of combustion 3 smoke
FA injury ‘Products of fire’ 1 flame 2 gases of combustion 3 2 3 smoke 4 4 burning powder 1 6 1 2 5 5 unburnt powder 2 6 projectile 3

54 Effects of products of fire
FA injury Effects of products of fire Flame scorching, burning, singeing Gases of combustion singeing, bursting, swelling Smoke blackening, fouling Burning powder burns, tattooing Unburnt powder tattooing Projectile injury

55 FA injury Products of fire

56 FA injury Distances of fire contact

57 FA injury Distances of fire near contact

58 FA injury Distances of fire near distance

59 FA injury Distances of fire distant

60 Distances of fire FA injury contact near contact near distance distant

61 stippling or tattooing
FA injury Mechanism of rifled fire arm injury production Normal skin projectile gyroscopic velocity Grease collar injury stippling or tattooing abrasion collar near-distance fire

62 FA injury Unprocessed test fire patterns 3” 9” 27” 21” 15”

63 FA injury Processed test fire patterns 27” 21” 15” 9” 3”

64 Griess test fire standards
FA injury Griess test fire standards 3” 9” 15” 21” 27”

65 .38 Smith & Wesson fire patterns
FA injury .38 Smith & Wesson fire patterns

66 Rifled fire arm injuries
FA inury Rifled fire arm injuries

67 Contact fire on temple stellate injury
FA injury Rifled fire arm injury Contact fire on temple stellate injury

68 FA injury Rifled fire arm injury Contact fire

69 Distant rifled fire arm injury
FA inury Distant rifled fire arm injury

70 Suicidal fire arm injury
FA injury Suicidal fire arm injury

71 Rifled fire arm injury .38 exit .38 entry .22 exit revolver exit
FA inury Rifled fire arm injury .38 entry .38 exit .22 exit revolver exit

72 Rifled fire arm injury near contact suicidal contact suicidal
FA injury Rifled fire arm injury near contact suicidal contact suicidal

73 FA injury Shot gun injury 410 chest 12 bore temple

74 FA injury Shot gun injury contact near contact near distance distant

75 Traumatology Fire arms Shot gun projectiles

76 FA injury Rifled fire arm injury Gutter wound – by a grazing bullet

77 ‘billiard-ball ricochet’ effect
FA injury Shot gun injury ‘billiard-ball ricochet’ effect

78 FA injury Rifled fire arm injury .38 entry & exit wounds

79 FA injury Rifled fire arm injury .22 exit wound

80 FA injury Rifled fire arm injury Near-distant injury

81 Rifled fire arm injury Near-contact wound Burnt powder particles
FA injury Rifled fire arm injury Burnt powder particles Near-contact wound

82 FA injury Shot gun injury .410 to chest

83 Rifled fire arm skull injury
FA injury Rifled fire arm skull injury entry wound exit wound bevelled in bevelled out

84 FA injury Rifled fire arm injury Black eye

85 FA injury Shot gun injury Distant injury

86 FA injury Rifled fire arm injury Entry wound in kidney

87 FA injury Rifled fire arm injury Exit wound kidney

88 FA injury Rifled fire arm injury exit wound

89 FA injury Rifled fire arm injury Distant injury

90 FA injury Rifled fire arm injury Distant injury

91 FA injury Rifled fire arm injury Blood spatter & soot

92 FA injury Rifled fire arm injury Bullet projecting from skin

93 FA injury Rifled fire arm injury Entry wound

94 FA injury Rifled fire arm injury Bullet track

95 FA injury Rifled fire arm injury Bullet tray in clay

96 Bullet in thoracic spine
FA injury Rifled fire arm injury Bullet in thoracic spine

97 Deformation within body
FA identification Bullet behaviour Deformation within body

98 FA injury Rifled fire arm injury Entry & exit wounds

99 FA injury Rifled fire arm injury Distant entry wound

100 FA injury Rifled fire arm injury exit wounds

101 FA injury Shot gun injury Skull xrays

102 FA injury Rifled fire arm injury Through roof of mouth

103 FA injury Rifled fire arm injury Suicide through mouth

104 Repaired femoral vessels
FA injury Rifled fire arm injury Repaired femoral vessels

105 FA injury Rifled fire arm injury Injury to internal iliac

106 FA injury Rifled fire arm injury GSW liver

107 FA injury Rifled fire arm injury GSW liver

108 FA injury Rifled fire arm injury GSW head of pancreas

109 FA injury Rifled fire arm injury Haematoma kidney

110 FA injury Rifled fire arm injury Skull wounding

111 Bullet fragments in skull
FA injury Rifled fire arm injury Bullet fragments in skull

112 FA injury Rifled fire arm injury Bevelling phenomenon exit entry

113 FA injury Rifled fire arm injury Bevelled in wound

114 FA injury Rifled fire arm injury Bevelled out injury

115 FA injury Rifled fire arm injury Gutter wound

116 Low velocity distant bullet injury
FA injury Rifled fire arm injury Low velocity distant bullet injury

117 Multiple bullet entry wounds
FA injury Rifled fire arm injury Multiple bullet entry wounds

118 FA injury Rifled fire arm injury Near-distant injury

119 FA injury Rifled fire arm injury Near-distant injury

120 FA injury Rifled fire arm injury Revolver exit

121 FA injury Rifled fire arm injury Contact fire

122 FA injury Rifled fire arm injury Slit exit

123 FA injury Rifled fire arm injury Stellate exit wound

124 FA injury Rifled fire arm injury Suicidal near-contact

125 FA injury Rifled fire arm injury Suicidal near contact

126 FA injury Rifled fire arm injury Near-distant injury

127 FA injury Rifled fire arm injury Near-distant injury ‘tattooing’

128 FA injury Rifled fire arm injury Pen pistol injury

129 FA injury Rifled fire arm injury Near-distant injury

130 FA damage Rifled fire arm injury Through a coarse garment

131 Rifled fire arm phenomenon
FA identification Rifled fire arm phenomenon Soot on hand

132 FA injury Rifled fire arm injury Contact fire

133 FA injury Rifled fire arm injury Contact fire with muzzle impression

134 FA inury Shot gun injuries

135 FA injury Shot gun injury Suicidal wounds

136 FA injury Shot gun injury Near-distance injury

137 FA injury Shot gun injury Multiple pellets in skull xray

138 FA injury Shot gun injury Near contact shot

139 FA injury Shot gun injury Near-contact shot

140 FA injury Shot gun injury Near-distant wound

141 FA injury Shot gun injury wads and pellets

142 FA injury Shot gun injury Distant injury

143 FA injury Shot gun injury .410 to chest

144 FA injury Shot gun injury 12 bore shot to temple

145 JFK shooting FA cases


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