What “Degenerative Changes” on your MRI Actually Means
The two most expensive words in workers’ compensation — and why they don’t mean what the insurance company hopes you’ll think they mean.
WHY THIS MATTERS. Your MRI report comes back after a work injury, and there it is: “degenerative changes.” Then the insurer’s letter arrives arguing your problem is “pre-existing degeneration,” not the accident. For many injured Missouri workers, these two words become the entire fight. So let’s read them the way a nurse reads them.
WHAT THE TERM MEANS. “Degenerative changes” is radiology shorthand for the ordinary wear that spines and joints accumulate with age and use: discs losing water content and height (desiccation), small bone spurs (osteophytes), facet joint arthritis, mild bulging. It’s the skeletal equivalent of gray hair — a description of tissue over time, not a diagnosis of what hurts.
WHAT IT DOES NOT NECESSARILY MEAN. Here’s the fact the defense never volunteers: degenerative findings are extremely common in people with no pain at all. Imaging studies of pain-free adults routinely show disc degeneration, bulges, and arthritis rising steadily with age — present in a large share of asymptomatic people by middle age. So “degenerative changes” on your MRI does not mean: that your pain is old, that the accident didn’t injure you, or that you’d hurt like this anyway. A spine can carry silent degeneration for decades — until a work injury turns quiet tissue into a painful problem.
HOW IT AFFECTS FUNCTION. Often, not at all — that’s the point. Degeneration by itself is frequently asymptomatic. What matters functionally is the change: the person who worked full duty, pain-free, for years — degeneration and all — and then couldn’t after the injury.
WHY IT MATTERS IN WORKERS’ COMP. Missouri’s “prevailing factor” standard asks whether the work accident was the primary cause of your current medical condition and disability — and an aggravation of a pre-existing condition can still be compensable when the work injury is what made it symptomatic and disabling. The battleground is medical opinion: which findings are old, which are acute (some findings, like edema or acute annular tears, can look recent on imaging), and — most powerfully — the before-and-after of your actual function. Your best evidence is often not on the film at all: it’s the years of full-duty work history before the accident, and the precise, dated onset of symptoms after it.
QUESTIONS TO ASK YOUR TREATING PROVIDER. Which findings on my imaging look chronic, and which could be acute? Is my current pain pattern consistent with the acute findings? Can you document in my chart that I was asymptomatic and working full duty before the injury date? Does the injury explain why previously silent findings became symptomatic?
NURSE ATTORNEY TIP: When you review your MRI report, don’t panic at the word count of findings — radiologists describe everything they see, relevant or not. The report is a photograph inventory, not a verdict. What converts findings into conclusions is a clinician correlating them with your symptoms and history — which is why the sentence “patient was asymptomatic prior to the work injury of [date]” is worth more in your chart than any amount of arguing later.
This article explains medical terminology generally, for education. It does not interpret your records, diagnose anything, or replace your doctor. For your specific condition, ask your treating provider.
