What Medical Records Can and Cannot Establish About Injury Causation

By Dr. Steven B. Ross, DC, FASBE, DAAPM

Chiropractic Physician | Fellow, American Academy of Applied Spinal Biomechanical Engineering | Diplomate, American Academy of Pain Management.

Medical records are among the most important sources of information in an injury case.

They can document symptoms, diagnoses, treatment, examinations, imaging findings, prior medical history, and changes over time. For attorneys and medical experts evaluating an injury claim, these records can provide an essential timeline and clinical context.

But medical records are not a complete record of everything that happened to a person.

They document what was reported, observed, examined, diagnosed, and treated at particular points in time.

That distinction matters when evaluating injury causation.

A medical record may provide important evidence about a condition without, by itself, establishing when the condition developed or what caused it.

Medical Records Provide a Timeline

One of the most valuable functions of medical records is establishing chronology.

A thorough review may reveal:

• What was documented before an incident

• What was reported immediately afterward

• When symptoms first appeared in the record

• When treatment began

• How symptoms changed over time

• What diagnostic testing was performed

• How subsequent providers described the condition

The timeline can help an expert understand how the condition developed and how the different pieces of information relate to one another.

However, the first appearance of a symptom in a medical record should not automatically be treated as the exact moment that symptom began.

There can be a difference between when something occurred and when it was first documented.

That is one reason medical records need to be interpreted in context.

Documentation Is Not the Same as Proof of Causation

A record may state that a patient developed back pain following an accident.

That documentation is important.

But it does not necessarily answer every causation question.

An expert may still need to consider the mechanism of the incident, the claimant's prior history, clinical findings, diagnostic information, and the progression of symptoms.

Similarly, a diagnosis appearing after an accident does not automatically establish that the accident caused the underlying condition.

The diagnosis establishes that a condition was identified.

The causation analysis asks a different question.

What does the available evidence show about how that condition developed?

Those questions should not be treated as interchangeable.

What About Information That Is Missing?

One of the more difficult issues in medical record review is the absence of documentation.

A symptom that does not appear in an earlier record may be relevant.

But the absence of documentation does not necessarily establish that the symptom did not exist.

Patients may not report every symptom during every visit.

A medical appointment may focus on an entirely different problem.

A provider may document only information relevant to the purpose of that particular visit.

Records can also vary significantly in their level of detail.

For that reason, missing documentation should be considered carefully rather than automatically interpreted as evidence that something did not occur.

The significance of an omission depends on the circumstances surrounding the record.

Earlier Records Can Change the Understanding of a Case

Sometimes an injury case appears relatively straightforward until earlier records are reviewed.

A later diagnosis may initially appear to provide a simple explanation.

But older records may reveal previous complaints, treatment, imaging findings, or functional limitations that provide additional context.

That does not automatically establish that the current condition is unrelated to the later event.

It means the earlier information needs to be considered as part of the complete analysis.

The same principle applies when reviewing subsequent records.

Later treatment, changes in symptoms, additional diagnostic findings, or changes in functional status may provide information that helps an expert understand the progression of the condition.

A case can change as the record becomes more complete.

Clinical Findings Need Context

Medical records often contain objective findings that are important to an expert's analysis.

These may include physical examination findings, range of motion, neurological findings, imaging, diagnostic testing, and other clinical observations.

But individual findings should not necessarily be considered in isolation.

A finding may have different significance depending on:

• The claimant's prior history

• The reported mechanism

• The timing of symptoms

• Previous treatment

• Subsequent clinical findings

• Other potential explanations

The value of a medical record is therefore not simply in the number of findings it contains.

It is in how those findings fit together.

The Role of the Expert Is Analysis, Not Just Record Review

An expert's role is not simply to repeat what appears in the medical records.

The records provide evidence.

The expert's responsibility is to analyze that evidence within the appropriate clinical and scientific framework.

That can involve asking:

What was the claimant's condition before the incident?

What changed afterward?

Does the reported mechanism correspond with the claimed injury?

Are the clinical findings consistent with the history?

Are there reasonable alternative explanations?

What does the available evidence establish, and what remains uncertain?

These questions help move the analysis beyond simply identifying what is written in the chart.

Why Objective Analysis Matters

In complex injury cases, it can be tempting to focus on one particularly persuasive piece of information.

It might be the accident history.

It might be an imaging finding.

It might be the first report of symptoms.

It might be a diagnosis.

But causation analysis generally requires consideration of the complete picture.

A strong analysis should account for evidence that supports an explanation as well as evidence that may complicate or challenge it.

That is particularly important when the medical history is extensive or when more than one explanation may be possible.

The objective is not to make the records support a predetermined conclusion.

The objective is to understand what the records actually support.

Questions Attorneys Can Ask When Reviewing Medical Records

When evaluating an expert's analysis of an injury case, attorneys may find it useful to ask:

What does the medical record establish?

This separates documented information from assumptions or interpretations.

What does the record not establish?

Recognizing limitations is an important part of responsible analysis.

How does the timeline affect the opinion?

The timing of symptoms, treatment, and findings can be significant.

Were earlier records considered?

Prior medical history can provide important context.

Were later records considered?

Subsequent developments may also affect how the condition is understood.

Were alternative explanations evaluated?

A complete causation analysis should consider reasonable alternatives rather than focusing exclusively on one explanation.

The Medical Record Is Evidence, Not the Entire Story

Medical records are essential to injury analysis, but they should not be treated as a simple answer to the causation question.

They provide pieces of the story.

Some pieces may be detailed.

Others may be incomplete.

Some may appear straightforward until additional records provide context.

The role of careful expert analysis is to bring those pieces together while recognizing both what the evidence demonstrates and where uncertainty remains.

After more than 40 years in clinical practice, I have learned that careful analysis often begins by resisting the urge to reach a conclusion too quickly.

The question is not simply:

What does the record say?

It is:

What does the complete record allow us to reasonably conclude?

That distinction can be important when evaluating injury causation.

About the Author

Dr. Steven B. Ross, DC, FASBE, DAAPM is a chiropractic physician, spinal biomechanical injury analyst, Independent Medical Examiner, and expert witness with more than 40 years of clinical experience. His practice focuses on injury causation analysis, spinal biomechanics, chiropractic and medical malpractice, independent medical examinations, and evidence-based medical-legal consulting.