Whiplash 

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Whiplash

Background:

Mode of Injury (MOI) = Trauma – usually road traffic accident (RTA), but can be as a result of rides, sports, abuse. 

Pain mechanism = Nociceptive local / Nociceptive referred.
Pathomechanics =  Myogenic 

Predominantly occurs in RTA and is an acceleration-deceleration-acceleration force which is too quick for the muscles to handle. 
Usually, cars a hit from front/side or the back. Majority of the injuries is micro-trauma. 
This type of accident can lead to a coup contra coup, which in turn results in symptoms such as concussions/dizziness. 
Patients usually report into a&e 24-hours after the incident due to DOMs & adrenaline. 

Quebec scale is used to measure the severity/type of whiplash:
Grade 0 = No complaints about neck & no physical signs. 
Grade 1 = Complaints about neck (stiffness) but no physical signs.
Grade 2 = Patients experience neck & MSK signs.
Grade 3 = Patients experience neck and numerological signs. 
Grade 4 = Patients have a fracture – in this instance, patients should NOT undergo physio intervention until appropriate.

Symptoms:
Concussion
Dizziness
Forgetfulness
Pain
Stiffness
Swelling
Bruising
Cervicogenic headaches

Aggravating factors:
Movement
Carrying things (such as bags)
Sleeping
Getting dressed

Easing factors:
Ice
Heat
Medication
Stretching

Epidemiology:
Females 33-44 have an increased chance of long-term neck pain.
20-40% of whiplash can lead to chronicity.
The minimum speed a whiplash can occur is 6mph.
8/10 claims are usually whiplash.
3 months of healing time.

Prognostic factors:
Age
Gender
Speed
Type of car
Seatbelt situation
Position of car
Model/year of car
Head-restraint position
Body position on impact

Assessment:
Observation =
Postural changes
Decrease ROM particularly in neck and shoulders
Bruising
Tenderness
Compensating
Altered movement
Facial expressions
Loose clothing

Clearance examination = 
Shoulders
Thoracic spine
Cervical spine (special questions – 5 D’s & 3 N’s)

Movement / Palpation =
Active / Active assisted / Passive / Resisted ROM may be reduced.
Pain may be increased.
Spasms may be present.
Decrease quality of movement.
End-feel = Stiff / spasm

Neurogenic = 
Dermatomes
Myotomes
Reflexes

Neurodynamic = 
Median nerve test
Ulnar nerve test
Axillary nerve test

Special Test =
Distraction
Flexion
Extension
Rotation

Functional Test =
Arm at the back of head
Arm behind lower back
Arm across opposite shoulder

Differential Diagnosis:
Cervicogenic headache
Fracture
Disc herniation

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