Week 8 a WADs Flashcards
Outcome for people who have WADs
- 50% don’t recover
* 30 % remain moderately to severely disabled
What is whiplash
- Whiplash is an acceleration-deceleration mechanism
- of energy transfer to the neck. The impact may result
- in bony and/or soft tissue injuries which in turn may lead
- to a variety of clinical manifestations (Whiplash
- Associated Disorders)
Biomechanics of WAD
• S shape just after impact
• Upper cervical flexion continues with lower cervical
hyperextension beyond physiological range of movement
(ROM)
• Secondary upper thoracic spine movement of superior
directed acceleration and extension /rotation
Time needed to brace for whiplash
Maximum injury 75 ms post impact -200 ms required for
muscle bracing
Bone pathology/red flags WAD
• Bone (red flags!!)
• Severe pain, high velocity accident, on-going severe pain
(esp. at rest), neurological symptoms
Disc pathology after whiplash
Disc
• Rim lesions (anterior annulus)
• End-plate lesions
• Posterior protrusion ± radiculopathy
Posterior elements
Posterior elements
• Z-joint (articular cartilage, synovial folds)
• Capsule & ligament
• Nerve tissue (dorsal root ganglia, spinal nerve root, brain
Grade 0 WAD
No complaint about neck pain
No physical signs
Grade 1 WAD
C/O neck pain and stiffness or tenderness
only
No physical signs
Grade II WAD
Neck compliant & MS signs - ROM &
tenderness
Grade III WAD
Grade II + neurological signs including
↓DTR,s , muscle weakness, sensory
deficits
Grade IV WAD
Neck symptoms + fracture/ or dislocation
Criticisms of Qubec Task Force Classification
Some criticism of QTF system of classification since its release
• Guidelines adopted without scientific validation (Spine 1998, (23)
1043, Spine 2001, (26) 36-41, )
• Limited predictive capacity of the guidelines in terms of
recovery and non recovery
Proposed adaptation QTF, WAD IIA
Neck pain
Motor impairment -decreased ROM, altered
muscle recruitment patterns (CCFT)
Sensory impairment
Proposed adaptation QTF, WAD IIB
Neck pain Motor impairment – decreased ROM Sensory impairment ( local cervical mechanical hyperalgesia) Psychological impairment of elevated psychological distress