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Stu Mcgill’s approach to assessing back pain

By PropaneFitness · November 23, 2025

The Problem with “Non-Specific Back Pain”

Assessing back pain, Stu McGill
A model of the human spine. Photo: Mauzymob, Wikimedia Commons, CC BY-SA 4.0

When a patient presents with leg pain and tells a clinician, “Doc, I have leg pain. Can you give me the right exercise or pill or should I have surgery?” the clinician performs a thorough assessment. They determine whether there’s a torn knee ligament, fractured bone, sore muscle, or another specific problem.

Yet when someone says they have back pain, the entire medical system shrugs and accepts “non-specific back pain” as a valid answer. Back pain is the patient’s experience, absolutely. But you cannot discuss what to do about it until you perform a thorough assessment and know the precise subcategory of pain.

Treatment without diagnosis and without assessment operates on dumb luck. You might get lucky, but a professional cannot rely on luck.

Assessment Reveals the Subcategory

Is the pain tissue-based? Is it coming from a disc bulge? Understanding the mechanism matters. McGill can almost predict the location of a disc bulge by knowing a person’s history. A weightlifter with a rounded-back lifting pattern will create different pressure on the nerve than someone with perfect form. A yoga master who bent forward would create anterior pressure, not posterior.

People assume everyone has the same anatomy. They don’t. Assessment for a seven-foot NBA center differs entirely from assessment for a jockey. The anatomy, movement patterns, and pain mechanisms all vary.

Reading the Person Is Fundamental

The Pain-Searcher

The first requirement of being a master clinician is reading people. Some patients are always searching for their pain. They describe yesterday’s pain when you ask about today. They spend three hours moving well, desensitizing the tissue, but then say, “Now where’s my pain?” They’re tonguing the chip in their tooth, picking at the scab.

For this person, a pain journal is the worst possible intervention. It reinforces the search behavior and keeps them in a cycle of pain sensitivity.

The Oblivious Patient

Assessing back pain, Stu McGill
Vertebrae and discs. Photo: Steve Jurvetson, Wikimedia Commons, CC BY 2.0

Then there’s the opposite person. They’re oblivious to their triggers. They drive three hours to visit their mother-in-law and get a few cranky days of back pain without connecting the cause. They have no idea the mechanism involved.

For this person, a pain journal becomes an essential tool. They’ll see the pattern emerge. They’ll realize what activity triggers pain and understand the mechanism. Then a simple intervention like a lumbar support during driving can migrate stress off a disc bulge and cool everything down.

Two people with back pain get opposite recommendations. You have to read the person before you give them a recommendation.

Psychology and Movement Interact

A UK police officer had debilitating back pain that crushed his psychological state. He lost confidence and adopted a victim’s posture. The NHS physio told him he was psychologically magnifying his pain, which made it worse. The man was already strong and powerful; this diagnosis crushed him further.

McGill did a simple test. Sitting upright with spinal compression? No pain. Slouching with the chest dropped? There’s the pain. The man had been living in his pain-producing posture for 10 minutes straight, and his first instinct upon standing was to go deeper into it.

McGill coached him: sniff air, lean forward through the hips, pull the hips through. When he stood up, tears flowed. For the first time, someone had empowered him to control his pain through movement competency, not cognitive therapy alone.

The psychological shift was instant. He became angry at how the medical system had treated him. He’d been given a book: “How to Live with Your Pain.” No one had the expertise to teach him movement competency and migrate the stress away.

For the first time, someone had empowered him to control his pain through movement competency, not cognitive therapy alone.

Personality Type Determines the Approach

A crossfitter comes in. Disciplined, gregarious, motivated. They push through pain because they’re wired to keep going. For them, telling them to keep going is poison. They need a lecture on desensitization, tissue adaptation, psychology, and cooling the system down. They need rest, which requires as much discipline as pushing through.

Then another person comes in. They’re sleeping until 10 a.m. when school pickup is at 7. They’re the opposite profile. They lack discipline and organization. For them, McGill would say, “Girl, it’s time to grow up. Behave like an adult, realize the mechanism, and do something about it.”

Two personality types. Two opposite approaches. Both require reading the person before you prescribe.

Exercise Addiction Is Real

Assessing back pain, Stu McGill
Lumbar and pelvic bones. Image: Wellcome Collection, Wikimedia Commons, CC BY 4.0

The highly-driven crossfitter who’s overdriven their back is often addicted to exercise and the social environment around it. They’ve tried physical therapy, chiropractic, medication, even therapy. Now they think surgery is the last option.

McGill recommends “virtual surgery” for these cases. Treat recovery exactly as you would if you’d had surgery: take time off, do progressive rehab, don’t do anything you wouldn’t do post-surgery. Force the hard reset. Stop the acute insult to the tissues and allow healing. Then progressively rebuild.

For highly driven, highly intelligent people, this forced rest becomes the only intervention that works. Biology winds everything down when given the chance.

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