Low-speed collision cases often create an immediate challenge for personal injury attorneys.
The vehicle may show limited visible damage. Initial X-rays may appear normal. An MRI may not identify a major structural abnormality. Before long, the defense argument becomes predictable: If the crash was minor, how could the injury be significant?
For attorneys handling whiplash and cervical spine injury cases, the strongest response is not simply arguing about the amount of property damage. It is building a medical record that clearly documents what happened to the client.
When the records connect the collision, symptoms, examination findings, functional testing, and objective evidence of cervical instability, minimal vehicle damage does not have to define the case.
Vehicle Damage Does Not Tell the Whole Medical Story
The appearance of a vehicle after a collision and the condition of an occupant’s cervical spine are not the same thing.
Motor vehicle collisions, including low-speed collisions, can generate forces capable of damaging the ligaments that stabilize the cervical vertebrae. When those ligaments are stretched or torn, abnormal motion may develop between adjacent vertebral segments. This condition is known as Alteration of Motion Segment Integrity, or AOMSI.
For an attorney, that changes the question.
Instead of asking only:
How badly was the vehicle damaged?
The medical inquiry should also ask:
Is there objective evidence that this individual sustained a cervical injury?
That distinction becomes particularly important when limited property damage is being used to minimize the claim.
Document the Mechanism of Injury Early
Strong documentation begins with a detailed history of the collision.
Whiplash-type trauma involves sudden movement of the neck that can stretch, tear, or otherwise damage the ligamentous and capsular structures of the cervical spine.
The medical record should therefore document relevant details about the event, including the direction of impact, the patient’s position, and when symptoms developed.
A chiropractor providing medical testimony is not necessarily serving as an accident reconstructionist. However, the medical expert should be able to explain whether the reported mechanism is consistent with the injury identified during the examination and diagnostic evaluation.
Ideally, the documentation creates a clear sequence:
Collision → cervical trauma → symptoms → examination → objective findings → diagnosis
When several of those links are missing from the record, causation becomes easier to challenge.
Symptoms Are Important, but Objective Findings Matter
Persistent pain, stiffness, headaches, or muscle spasms are important clinical findings. But symptoms alone can become vulnerable when the defense argues that the collision was too minor to cause meaningful injury.
This is where objective findings become especially important.
One challenge with cervical ligament injuries is that traditional imaging does not always provide the complete picture. The material addressing AOMSI notes that plain radiographs may appear normal despite clinical evidence of soft-tissue damage. It also discusses patients who have signs and symptoms of cervical instability even though an MRI obtained in a neutral position appears normal.
For attorneys, a “normal MRI” should therefore prompt another question:
Was the imaging designed to evaluate abnormal movement of the cervical spine?
That is different from asking whether a fracture, disc abnormality, or other structural finding appeared on a static image.
Functional Diagnostics Can Fill an Important Gap
AOMSI involves abnormal movement between vertebral segments. Evaluating that movement requires looking at the cervical spine functionally.
Flexion and extension radiographs allow the spine to be evaluated during movement. Radiographic Mensuration Analysis—also referred to as CRMA or DRMA—can then quantify translation and angular motion between adjacent vertebrae.
The source material describes earlier manual measurement methods as having a 26% error rate. Computerized analysis is described as accurate to within 0.01 millimeters and 0.01 degrees.
That creates an important distinction for attorneys reviewing medical records.
A report saying that X-rays were “normal” does not necessarily mean that vertebral motion was quantitatively measured.
If a client continues to experience symptoms, determine whether:
- Flexion and extension studies were obtained
- Those studies were quantitatively measured
- Ligament instability was evaluated
- AOMSI criteria were considered
The absence of that testing does not prove an injury exists. It may simply mean the question was never fully investigated.
Document the Injury, Not Just the Treatment
Many personal injury records describe treatment in great detail.
The patient received adjustments.
The patient attended therapy.
Symptoms improved temporarily.
Pain later returned.
What may be less clear is what structure was actually injured.
When cervical ligament instability is present, the documentation should identify it.
AOMSI may also be described as spinal segmental instability, loss of structural integrity, ligament tear, ligament laxity, or traumatically induced translation and angular motion between adjacent vertebrae.
Compare these two medical narratives:
“Patient continues to report neck pain following an automobile accident.”
Versus:
“Functional imaging identified objectively measured abnormal motion between adjacent cervical vertebrae consistent with ligament instability.”
The second statement gives the attorney something that can be explained, measured, and defended.
Connect the Findings to Recognized Criteria
Objective testing becomes more useful when the physician explains what the findings mean.
When AOMSI meets the applicable criteria, the AMA Guides provide a framework for documenting permanent impairment. The important issue for attorneys is not simply obtaining an impairment percentage.
The medical record should demonstrate the process:
- Appropriate imaging was obtained.
- Vertebral motion was measured.
- The measurements were compared with established criteria.
- The diagnosis was documented.
- The medical significance of the findings was explained.
That approach provides a stronger foundation than a conclusory statement that the patient suffered a serious injury.
Build Causation Into the Medical Record
Causation should not become an afterthought once litigation begins.
When a physician believes the cervical condition resulted from the collision, the records should explain why.
The analysis may include the mechanism of injury, timing of symptoms, examination findings, diagnostic testing, and objective evidence of instability. The AOMSI material specifically discusses the condition as traumatically induced rather than simply a product of aging or degeneration.
This becomes especially important when the client has preexisting degenerative findings.
The presence of degeneration does not answer the causation question by itself. A medical expert should be able to explain why the findings attributed to the collision are distinct from—or medically related to—the patient’s preexisting condition.
What Attorneys Should Ask in a Low-Speed Collision Case
When limited vehicle damage is becoming the central defense theme, review the medical record for several key questions:
- Was the collision mechanism adequately documented?
- Did symptoms begin after the collision?
- Have the symptoms persisted?
- Were only static imaging studies performed?
- Were flexion and extension radiographs obtained?
- Were those studies quantitatively measured?
- Was ligament instability or AOMSI considered?
- Are objective findings tied to recognized diagnostic criteria?
- Does the physician clearly explain causation?
Several unanswered questions may indicate that the cervical injury requires a closer review.
The Bottom Line
Low-speed collision cases can quickly become battles over appearances.
The vehicle does not look badly damaged, so the injury is assumed to be minor.
Medical documentation provides the opportunity to move the discussion away from assumptions and toward evidence.
When the record clearly documents the mechanism of injury, symptoms, clinical findings, functional diagnostics, objective measurements, and basis for causation, attorneys are better positioned to explain why the severity of a cervical injury should be determined by the medical evidence—not simply by photographs of the vehicle.
Dr. Richard Falcone provides case reviews and expert witness services for attorneys handling whiplash and cervical spine injury matters in Allegheny County, Pennsylvania.