The Language Trap: How Radiology Reports Mislead Attorneys, Adjusters, and Juries

The Language Trap: How Radiology Reports Mislead Attorneys, Adjusters, and Juries

A tear is not always a traumatic injury. A herniation is not always new. And the MRI report was not written to answer your causation question.

There is a moment in almost every spine litigation case when someone reads a radiology report out loud, and the words land in the room like a verdict. Disc herniation. Annular tear. Ligamentous disruption. The language carries weight. It sounds like damage, like something broken, like injury that can be attributed to an event.

The problem is that radiology reports are written by radiologists for clinical use, not for litigation. The terminology was standardized by committees of spine specialists to achieve consistency in clinical communication. It was not designed to answer the causation questions that courts ask. When those terms migrate from the clinical chart to the courtroom, they carry implications they were never meant to carry.

Understanding what radiology language actually means, and what it does not mean, is one of the most practically useful things a California attorney or claims professional can bring to a spine case.

The Word 'Tear' and What It Does to a Jury

Consider the word tear. In everyday language, a tear is something that happens when force is applied to something that was previously intact. You tear paper. You tear fabric. You tear a muscle by overstretching it. The word implies a traumatic event.

In the context of spinal imaging, the term annular tear or annular fissure refers to a disruption in the fibers of the outer disc wall, the annulus fibrosus. These disruptions are extremely common in the general population, including in people with no pain and no history of injury. Brinjikji and colleagues found annular fissures in 19% of completely asymptomatic 20-year-olds, and in 29% of asymptomatic 80-year-olds. The fibers of the annulus undergo degenerative change as a normal part of aging. Many fissures form gradually through repetitive microloading, not a single traumatic event.

The North American Spine Society, the American Society of Spine Radiology, and the American Society of Neuroradiology addressed this specifically in their combined task force nomenclature guidelines, published in Spine in 2001 and updated since. The guidelines note that the term annular fissure is preferred over annular tear specifically because it avoids implying a traumatic mechanism. The word tear, in other words, was identified by the relevant professional societies as misleading. Many radiologists still use it because old habits persist and clinical reports are not written with litigation consequences in mind.

Source: Fardon DF, Milette PC. Nomenclature and classification of lumbar disc pathology. Spine. 2001;26(5):E93-E113.

Disc Herniation: What the Term Actually Describes

Herniation is another term that lands hard in litigation. Disc herniation sounds like something forceful happened. And sometimes it does. High-energy trauma can cause acute disc herniation in a previously normal spine. But the term herniation in radiology simply means displacement of disc material beyond the normal disc space boundary. It describes a shape, not a mechanism.

Disc herniations are broadly classified as protrusions (where the disc material extends beyond the boundary but the base is wider than the displaced portion) or extrusions (where the displaced portion is wider than or equal to the base). Sequestrations are extruded fragments that have separated from the parent disc.

The Brinjikji data shows disc protrusion in 29% of asymptomatic 20-year-olds and 43% of asymptomatic 80-year-olds. These are protrusions in people who feel completely fine. The protrusion is a morphological description. Whether it is symptomatic, whether it causes nerve root compression, and whether it is new or pre-existing requires clinical correlation that the MRI alone cannot provide.

The Pre-Existing Herniation Problem

One of the most common disputes in California spine litigation is the question of whether a disc herniation seen after an accident was caused by the accident or was already present. In most cases, there is no pre-accident MRI. The absence of a pre-accident MRI does not mean the herniation did not exist before the accident. It means there is no imaging to compare.

Whether a herniation is acute or chronic requires clinical analysis of multiple factors: the presence or absence of edema or Modic changes on MRI that would suggest acute injury, the degree of disc degeneration surrounding the herniated segment, the patient's age and the expected degenerative state for that age, the mechanism of injury and whether it was biomechanically sufficient to cause an acute herniation at that level, and the temporal relationship between the accident and symptom onset.

A radiologist reading an MRI taken two months after an accident cannot determine, from the image alone, whether the herniation was acute or chronic. The report will describe what is present. The interpretation of that finding in the context of the accident is a clinical and medico-legal judgment that requires an IME.

How Radiology Report Language Affects Patient Behavior

The consequences of radiology language go beyond what happens in a courtroom. Research by Bossen and colleagues published in Clinical Orthopaedics and Related Research examined whether rewording MRI reports affected patient understanding and emotional response. They found that patients who received standard radiology reports with terms like herniation and degeneration reported significantly more distress and worse expected outcomes than patients who received reworded reports explaining that findings were common, age-related, and often present in pain-free people.

The same phenomenon affects how claims evolve. A claimant told by a radiologist that they have a herniated disc and annular tears, without context, will reasonably conclude that they are significantly injured. This belief may drive the length of treatment, the severity of reported symptoms, and the trajectory of the claim, all based on a word choice that was never intended to establish traumatic causation.

Treating physicians who read the same report without correction reinforce that impression. By the time the case reaches litigation, the radiology language has become embedded in the clinical narrative as if it established what the accident did. Unwinding that narrative requires an examiner who can explain, with precision and without condescension, what the terms actually mean.

Commonly Misunderstood Radiology Terms in Spine Litigation

Disc Bulge vs. Disc Herniation

A disc bulge is a generalized extension of disc material beyond the disc space boundary, involving more than 25% of the disc circumference. A herniation involves less than 25% of the circumference and is therefore more focal. Neither term describes the cause of the finding. Both are common in asymptomatic individuals across all age groups.

Modic Changes

Modic changes are signal changes in the vertebral endplates and adjacent bone marrow visible on MRI. Type 1 Modic changes, which appear bright on fluid-sensitive sequences, are sometimes interpreted as evidence of acute inflammation. They can be associated with active disc disease but are not specific to traumatic injury. They are found in a portion of symptomatic and asymptomatic individuals and are not a reliable marker of recent trauma.

High-Intensity Zone

A high-intensity zone, or HIZ, is a bright signal in the posterior annulus fibrosus on MRI, thought to represent a full-thickness annular fissure or disruption. It is sometimes used to argue that a specific disc is the pain generator. The research on its clinical significance is mixed: while some studies associate HIZ with positive provocative discography, others find it in asymptomatic individuals and do not find a consistent association with pain severity.

Foraminal Narrowing and Nerve Root Compression

Foraminal narrowing describes reduction in the opening through which a nerve root exits the spinal canal. It is extremely common as a result of disc height loss, facet hypertrophy, and osteophyte formation, all of which are degenerative processes. Radiological narrowing does not establish that the nerve root is being compressed in a clinically meaningful way. Neurological examination findings, including dermatomal sensory changes, myotomal weakness, and reflex changes, are required to establish clinically significant nerve root involvement.

The Practical Takeaway

Reading a radiology report requires understanding what it can and cannot tell you. It can describe the morphology of the spine at the time of the scan. It cannot establish causation. It cannot tell you whether the findings preceded the accident. It cannot determine whether the findings are causing the reported symptoms. And the language it uses to describe those findings carries clinical meaning that does not directly translate to litigation conclusions.

Every California attorney handling a spine case involving an MRI should be able to answer three questions before relying on that MRI in their causation argument: What are the age-specific prevalence rates for these findings in asymptomatic individuals? Is the mechanism of injury biomechanically sufficient to cause these specific findings as new injuries? And what in the clinical record distinguishes pre-existing degeneration from acute traumatic injury at each affected level?

The IME is the tool designed to answer those questions. The radiology report is the tool designed to describe what the machine saw.

Related pages:

• Disc Bulges, Herniations, and Degeneration on MRI: What the Research Actually Shows
• What Makes a Defensible IME Report
• IME vs. Treating Physician: Understanding the Difference

Primary sources: Fardon DF, Milette PC., Spine 2001; Brinjikji W et al., AJNR 2015; Bossen JK et al., Clin Orthop Relat Res 2013.