Thoracic spine claim
Thoracic spine injury after a NSW motor accident
Thoracic injuries can be overlooked because pain is attributed to ribs, posture or general back strain. The claim should identify whether the accident caused thoracic soft tissue injury, vertebral or posterior-element fracture, disc pathology, nerve-root findings or spinal cord involvement.
Motor accident mechanism
What can happen in a motor accident?
Rear-end crash
Seat-belt restraint and torso flexion can load the mid-back and chest wall during sudden deceleration.
Side-impact crash
Lateral impact can compress one side of the thorax and rotate the thoracic spine.
Motorcycle fall
A direct fall onto the back or shoulder can cause compression, posterior-element or rib injury.
Pedestrian impact
Vehicle impact may cause direct thoracic trauma followed by a fall, with possible fracture or cord involvement.
Injuries and diagnoses that may follow
- thoracic muscle or ligament strain
- costovertebral or facet injury
- thoracic disc injury
- vertebral compression or posterior-element fracture
- thoracic spinal cord injury
Symptoms that should be recorded accurately
- mid-back pain
- pain with breathing or torso rotation
- band-like chest or abdominal sensory symptoms
- postural and lifting intolerance
- leg weakness, altered gait or sensory level where cord injury is suspected
Urgent medical signs
Thoracic trauma with progressive leg weakness, gait change, sensory level or breathing difficulty requires urgent medical assessment.
Clinical evidence
What medical findings matter?
The thoracic region uses the thoracolumbar DRE descriptors. Examination should record midline tenderness, guarding, reproducible motion findings and any neurological level.
| Record or test | What it can establish | What it cannot establish alone |
|---|---|---|
| Thoracic examination | Separates spinal tenderness and motion findings from rib, chest-wall or referred pain. | Local pain does not identify fracture or cord injury. |
| X-ray or CT | Defines vertebral, posterior-element and rib fractures and permits compression measurement. | A radiology label should not replace the clause 6.148 measurement method for compression. |
| MRI | Shows disc, cord, ligament and canal pathology. | A thoracic disc change without matching symptoms or signs is not a DRE category. |
| Neurological exam | Records sensory level, lower-limb power, reflexes, tone and gait. | General pain-limited movement does not establish central nervous-system impairment. |
Part 5 classification
Is this likely to be threshold or non-threshold?
A thoracic strain may be threshold. A verified vertebral fracture, spinal cord injury, qualifying nerve injury or excluded rupture may be non-threshold. Mid-back pain alone does not identify which injury occurred.
Evidence that may support a threshold classification
- thoracic soft tissue strain
- pain with movement without structural or nerve injury
- non-verifiable sensory complaints
- incidental disc change without correlation
Evidence that may support a non-threshold injury
- vertebral or qualifying posterior-element fracture
- spinal cord injury
- verified nerve injury
- excluded partial or complete rupture
Radiculopathy means two or more clinical signs, not pain alone
Clauses 5.7-5.9 and 6.138-6.142 require dysfunction of a spinal nerve root with two or more of the following signs found on examination:
- 1.loss or asymmetry of reflexes
- 2.positive sciatic nerve-root tension signs
- 3.muscle atrophy or decreased limb circumference
- 4.muscle weakness anatomically localised to the appropriate spinal nerve-root distribution
- 5.reproducible sensory loss anatomically localised to the appropriate spinal nerve-root distribution
Pain, burning or tingling that follows a nerve-root pattern but lacks objective neurological findings is a non-verifiable radicular complaint under Table 6.8. If the neck or spine symptoms do not meet the radiculopathy criteria, clause 5.9 says the injury is assessed as threshold.
Part 6 permanent impairment
How is WPI assessed for this injury?
Thoracic WPI uses the thoracolumbar DRE descriptors in AMA4 pages 106-107, modified by Part 6. Fracture patterns, clinical findings and any cord impairment must be assessed using the specific clauses rather than a lumbar ROM calculation.
CTP spine method: clause 6.111 requires the DRE method. The spinal ROM model and AMA4 Table 75 are not used, and clause 6.123 says loss of motion segment integrity is not applied.
| Category | Human-language guide to the verified CTP rule |
|---|---|
| DRE I | Symptoms are present, but the medical assessor finds no objective clinical findings that place the injury in a higher category. This is the rule stated in clause 6.129. |
| DRE II | The assessor finds qualifying clinical findings, such as guarding, reproducible non-uniform motion or non-verifiable radicular complaints, or a specified stable fracture pattern, but not verified radiculopathy or a higher structural inclusion. |
| DRE III | This category includes verified radiculopathy and specified fracture or dislocation patterns identified in Table 6.7. Radiating pain without the required neurological signs is not enough. |
| DRE IV | This is a higher structural category. One verified example is multiple qualifying vertebral fractures without radiculopathy under clause 6.151(a). Fusion and disc replacement are treated as multilevel structural compromise under clause 6.145, but surgery does not by itself supply a fixed percentage. |
| DRE V | This is the higher structural category where the applicable descriptor includes radiculopathy. Clause 6.151(b), for example, places multiple qualifying vertebral fractures with radiculopathy in category V. |
A DRE category is not a percentage to calculate from symptoms. The assessor must use the region-specific AMA4 descriptors on pages 102-107 as modified by clauses 6.125-6.132 and explain the tables or figures used, as required by clause 6.122.
- Compression fracture percentage is measured under clause 6.148.
- Transverse or spinous process fractures with displacement are DRE II under clause 6.149.
- One or more end-plate fractures in one region without measurable compression are DRE II under clause 6.150.
- Spinal cord impairment is assessed under clause 6.161 and combined with the associated DRE.
What does not establish the result by itself?
- mid-back pain alone
- rib pain assumed to be spinal injury
- MRI disc change alone
- spasm alone
- predicted future degeneration
Accident-specific examples
Seat-belt loading with thoracic strain
If the evidence shows only soft tissue strain and no excluded injury, the classification may remain threshold.
Motorcycle fall with displaced spinous-process fracture
Clause 6.149 gives a specific DRE II rule for one or more displaced transverse or spinous process fractures in a region.
Pedestrian impact with thoracic fracture and leg weakness
The file requires both structural DRE analysis and assessment of possible cord impairment; it should not be treated as ordinary mid-back pain.
Claim file preparation
Evidence checklist
Assessment source
Thoracic spine threshold and DRE source
Assessment source: Motor Accident Guidelines v10.1 clauses 6.111-6.161, Tables 6.7 and 6.8; AMA4 thoracolumbar DRE descriptors as modified by Part 6.
Threshold injury: Thoracic soft tissue strain may be threshold. Fracture, cord injury or another excluded injury requires a different classification analysis.
What the assessor checks
- thoracolumbar DRE method
- fracture-specific clauses 6.148-6.151
- cord combination rule in 6.161
- no predicted future change
What does not establish the result by itself
- pain alone
- spasm alone
- scan alone
- future deterioration prediction
Official sources
Related NSW CTP guides
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Frequently asked questions
- Is thoracic pain assessed like lumbar pain?
- The same modified DRE framework applies, but the thoracolumbar region has its own AMA4 descriptors and clinical pattern.
- Does a rib fracture create spinal WPI?
- Not by itself. Rib and spinal injuries are assessed under their applicable body-system rules. Uncomplicated healed rib fractures are non-assessable under clause 6.23.
- How is a compression fracture measured?
- Clause 6.148 prefers a lateral X-ray parallel to the disc spaces, or CT if needed, with the assessor documenting the measurement calculation.
- Can thoracic disc pathology be threshold?
- It depends on the actual injury and findings. Imaging alone is insufficient, and neurological symptoms require clinical verification.
- What if there are cord symptoms?
- Cord pathology is assessed under the nervous-system method and may be combined with the associated DRE under clause 6.161.