Proving Radiculopathy—A Playbook for Negative MRI Cases
Learn why a "normal" MRI doesn't rule out injury, as imaging often misses chemical nerve irritation and inflammatory responses.
Linda Acker FNP-C
5/7/20262 min read
A normal MRI doesn't close a cervical spine case. For a lot of people reviewing records, it does. That's the problem.
Radiculopathy doesn't always show up on imaging.
An MRI is excellent at capturing mechanical compression. What it doesn't capture is chemical nerve irritation. When biochemical mediators leak from an annular tear, they irritate surrounding nerve tissue through contact, not compression. The symptoms are real and measurable. The imaging is clean. Those two things aren't contradictory they're describing different parts of the same injury.
Knowing which one you're dealing with, and where to find it in the records, is a different skill.
A two-week delay in symptoms has a clinical explanation.
Secondary inflammation takes time to mature. There's a documented biological reason why radicular symptoms can be absent in the first 24 to 72 hours and develop fully later. Whether that progression is captured correctly in the records, and whether it tells a coherent clinical story, is worth knowing before anyone else figures it out.
The physical exam contains objective findings that can't be faked.
There are specific, measurable markers for nerve involvement that live in the provider's physical exam notes. Bilateral limb circumference measurements, for example, document muscle wasting, a physical manifestation of chronic nerve irritation that self-report can't produce. When those findings are present, they're significant. When they're absent from notes where they should appear, that's significant too.
The medication list corroborates the clinical picture.
A pH shift in disc tissue, dropping from neutral to acidic, creates a chemical environment that irritates adjacent nerve roots in a specific and documentable way. These aren't assumptions. They're patterns. Reading them accurately requires knowing what they mean clinically, not just that they exist.
PT and OT notes are underutilized.
Physician notes document diagnosis and treatment. Therapy notes document what a patient actually can't do. Functional limitation, daily impact, progression over time... that information lives in therapy documentation and it's routinely overlooked.
If you have a cervical spine case where the imaging is normal and the clinical picture isn't adding up, that's the conversation I have. Link in the show notes.