Table 29         Thorax Injury Criteria Tolerance Levels

Injury Criteria

Tolerance Levels

Criterion

Units

Level 0

Level 1

Level 2

Level 3

Level 4

No Injury

Egress

Minor Injury

Egress

Major Injury

Egress Assisted

Severe Injury

Medical Assistance

Potentially Non-survivable

Frontal Rib Fracture Criterion

mm

<58

(No Fracture)

58 – 70

(1 Fracture)

70 –92

(2-4 Fractures)

> 92

(Flail Chest)

>92

(Flail Chest)

Lateral Rib Fracture Criterion

mm

<42

(No Fracture)

42 - 53

(1 Fracture)

53 – 74

(2 – 4 Fractures)

>74

(Flail Chest)

>74

(Flail Chest)

Thorax Internal Organ Injury Criterion

V*C

<0.5

(No injury)

0.5 – 0.75

(Minor contusions)

0.75 – 1.0

(Minor Lacerations)

1.0   – 1.5

(Major Ruptures)

>1.5

(Massive failure and haemorrhaging)