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Knee Injuries After Motor Accidents in NSW: What Changed in the 2017 CTP Reforms

The 2017 CTP reforms in NSW changed how knee injuries from motor accidents are assessed and compensated, introducing a 10% permanent impairment threshold for damages. Evidence such as medical reports, imaging, and functional assessments is critical. Benefits may stop after 52 weeks if only threshold injuries are present. Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

Current as at 19 June 2026

How the 2017 CTP Reforms Changed Knee Injury Claims in NSW

A threshold injury under the Motor Accident Injuries Act 2017 (NSW) includes a soft tissue injury and a psychological or psychiatric injury that is not a recognised psychiatric illness (adjustment disorder and acute stress disorder are the usual examples; s 1.6 and Motor Accident Guidelines Part 5).

After the 2017 reforms to the Compulsory Third Party (CTP) insurance scheme in New South Wales, the way knee injuries from motor accidents are assessed and compensated has changed significantly. The Motor Accident Injuries Act 2017 introduced a new framework that prioritises early treatment, limits long-term benefits for certain injuries, and establishes clear thresholds for claiming damages. For knee injuries, this means that compensation is now determined not just by the presence of injury, but by whether the injury meets the legal definition of a 'threshold injury' and whether it results in a permanent impairment. The reforms also made it more difficult to claim damages for soft-tissue injuries unless they cause lasting functional impact. This shift affects how medical evidence is used, how treatment is funded, and what benefits are available over time.

What the 2017 Reforms Changed for Knee Injuries

The 2017 reforms introduced a formal threshold system that applies to all motor accident claims in NSW. A knee injury may be classified as a threshold injury if it results in a permanent impairment of at least 10% to the whole person, as assessed under the Motor Accident Guidelines. This includes ligament tears, meniscus injuries, and joint damage that affect movement or function. If the injury does not meet this threshold, the claimant may still receive treatment and care benefits and weekly income payments, but cannot claim damages for pain and suffering or loss of enjoyment of life.

A key change is that only injuries that result in a permanent impairment of 10% or more qualify for damages. This means that a knee injury must not only be diagnosed but must also be shown to have caused lasting functional limitation. For example, a torn ACL that heals with full recovery and no ongoing symptoms may not meet the threshold. However, if the injury leads to chronic instability, arthritis, or reduced mobility, it may be assessed as a threshold injury.

Another change is the 52-week limit on treatment and care benefits and weekly income payments when a person’s only injuries are threshold injuries. This means that if a knee injury is the only injury sustained and it qualifies as a threshold injury, benefits may stop after 52 weeks, regardless of ongoing symptoms. This rule applies unless the injury is later found to have caused a permanent impairment of 10% or more, which would allow for continued benefits and a claim for damages.

What Evidence Is Needed to Support a Knee Injury Claim

To establish a claim for a knee injury under the 2017 CTP scheme, claimants must provide clear and contemporaneous evidence. The most critical documents include:

  • A medical report from a qualified medical practitioner confirming the diagnosis, treatment, and current functional status.
  • Imaging results such as MRI or X-ray showing the extent of ligament, meniscus, or cartilage damage.
  • A functional assessment detailing how the injury affects daily activities, work capacity, and mobility.
  • A record of treatment received, including physiotherapy, surgery, and medication.
  • A statement from the treating practitioner linking the injury to the motor accident, including a timeline of symptoms and recovery.

The Motor Accident Guidelines require that impairment assessments be conducted by a qualified medical assessor using the Australian Institute of Health and Welfare (AIHW) impairment tables. For knee injuries, the assessment considers factors such as range of motion, joint stability, and presence of osteoarthritis. A claimant must be assessed at least 12 months after the accident to ensure the injury has stabilised.

Practical Steps After a Knee Injury in a Motor Accident

If you have sustained a knee injury in a motor accident in NSW, take the following steps immediately:

  1. Seek medical attention as soon as possible. Delaying treatment may affect the assessment of causation.
  2. Report the accident to your insurer or to SIRA within 30 days, if possible. While there is no strict legal deadline, delays may affect the processing of your claim.
  3. Keep a record of all medical appointments, treatment notes, and correspondence with your insurer.
  4. Take photographs of the vehicle damage and any visible injury, if safe to do so.
  5. Gather contact details of any witnesses to the accident.

These steps help ensure that your claim is supported by reliable evidence and that you meet the procedural requirements under the Motor Accident Injuries Act 2017.

When to Seek Legal Advice

The 2017 reforms have made it more difficult to claim damages for knee injuries, particularly if they are classified as soft-tissue injuries. However, if your injury involves a ligament tear, meniscus damage, or joint instability that results in lasting impairment, you may still be eligible for compensation. The decision depends on the medical evidence, the timing of assessments, and whether the injury meets the 10% threshold.

If you are unsure whether your knee injury qualifies for damages, or if your benefits have been stopped after 52 weeks, it is advisable to seek independent legal advice. An experienced solicitor can help you understand your rights, review your medical records, and determine whether a claim for damages is viable.

Hypothetical Example: A Knee Injury After a Rear-End Collision

A 38-year-old office worker was involved in a rear-end collision while stopped at a traffic light. The impact caused immediate pain in the right knee, which was diagnosed as a complete tear of the anterior cruciate ligament (ACL) and a meniscus tear. The person underwent surgery and completed 12 months of physiotherapy. At the 12-month review, a medical assessor determined that the knee had limited stability, reduced range of motion, and early signs of osteoarthritis. The impairment was assessed at 14% to the whole person. Because the injury caused a permanent impairment of more than 10%, it met the threshold for damages. The claimant was able to claim compensation for pain and suffering, loss of income, and future care needs.

Next Steps: Understanding Your Rights

Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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