PHYSICAL THERAPY DISCOVERY
CRITICAL: Only 30-35% of patients fully adhere to their PT programs. 70% are doing it wrong, or don't fully benefit from it.
I'm a Physical Therapist. I Did Everything Right. My Patients Still Weren't Getting Better.
December 19, 2025 - Dr. Sarah Mitchell, PT, DPT, Seattle
"I graduated top of my class. I did a competitive residency. I followed every protocol exactly as taught. But after two years of practice, my patient outcomes weren't matching what I was promised in school. 60% of my L4-L5 disc patients weren't improving after 12 weeks of treatment. I was doing everything right. They were doing everything right. So why weren't they getting better? The answer was in the research I read in grad school but never actually applied in practice. And it changed everything."
Stop Wasting Time on Exercises That Get Undone Every Night
My First Day As A Physical Therapist
I'd worked toward this for 7 years.
Four years of undergraduate kinesiology.
Three years of doctoral physical therapy program.
Two competitive clinical rotations.
I graduated with a 3.87 GPA.
I passed my boards on the first try.
I was ready to help people.
My first patient was a 52-year-old woman named Jennifer.
MRI showed L4-L5 disc bulge with nerve compression.
Sciatica down her right leg. Morning pain 8/10.
Classic presentation. Textbook case.
I pulled out everything I learned:
Initial evaluation:
• Pain assessment
• Range of motion testing
• Strength testing
• Postural analysis
• Gait evaluation
• Functional movement screening
Treatment plan:
• Core strengthening exercises
• McKenzie method for disc centralization
• Manual therapy for muscle tension
• Hip flexor stretching
• Postural education
• Home exercise program
This was exactly what I was taught.
Evidence-based. Protocol-driven.
Expected outcome: 70-80% improvement within 8-12 weeks.
I told Jennifer: "If you do the exercises consistently, you should see significant improvement in 6-8 weeks."
She nodded. Determined. Ready to do the work.
I gave her an exercise sheet. Showed her each movement. Checked her form.
"You've got this," I said.
I believed it.
Week 8: She Wasn't Better
Jennifer came to her Week 8 appointment.
I pulled up her chart before she came in.
Attendance: Perfect. Didn't miss a single session.
Home exercise compliance: Self-reported 100%.
I'd checked her form multiple times. Perfect.
She'd done everything right.
Current pain level: 7/10. Down from 8/10.
One point. In 8 weeks.That's not what the research said would happen.
That's not what my professors promised.
That's not what my clinical supervisor told me to expect.
"How are you feeling?" I asked when she came in.
"About the same," she said. Trying to smile. "Maybe a little better? I don't know."
I reviewed her home program again.
I added new exercises.
I did more manual therapy.
I checked her form again.
Everything was perfect.
So why wasn't she getting better?
"Give it another month," I said. "Sometimes progress is gradual."
But I could see the disappointment in her eyes.
Six Months Into Practice: The Numbers Didn't Add Up
I started tracking my patient outcomes.
Not because anyone asked me to.
Because I needed to know if I was doing something wrong.
L4-L5 disc patients (18 total):
• Significant improvement (pain reduced 50%+): 7 patients (39%)
• Moderate improvement (pain reduced 25-49%): 5 patients (28%)
• Minimal improvement (pain reduced <25%): 6 patients (33%)
39% success rate.
In school, I was told to expect 70-80%.
What was I doing wrong?
I reviewed each case.
The patients who improved:
• Did their exercises? Yes.
• Had good form? Yes.
• Attended regularly? Yes.
The patients who didn't improve:
• Did their exercises? Yes.
• Had good form? Yes.
• Attended regularly? Yes.
There was no difference in compliance.
There was no difference in effort.
So why the difference in outcomes?
I asked my clinical supervisor.
"Some patients just don't respond to conservative treatment," he said. "That's why we have surgical options."
That answer didn't satisfy me.
40% of my patients weren't "non-responders."
Something else was going on.
The Patient That Broke Me
March 2023.
Robert, 58. L5-S1 herniation.
Motivated patient. Former marathon runner. Desperate to avoid surgery.
He did EVERYTHING.
Came to PT three times per week (I only recommended two).
Did his home exercises twice a day.
Bought every piece of equipment I mentioned.
Tracked his pain levels in a journal.
Asked intelligent questions.
Perfect patient.
16 weeks of treatment.
Pain went from 8/10 to 7/10.
One point.
After 48 sessions.
After hundreds of dollars in copays.
After hundreds of hours doing exercises.
He sat in my treatment room at week 16.
"Dr. Mitchell, I don't think this is working."
I wanted to cry.
Not because he was giving up.
Because he was right.
And I didn't know why.
"I'm sorry," I said. "I don't understand why you're not responding to treatment. You're doing everything perfectly."
"Is it me?" he asked. "Am I doing something wrong?"
"No," I said. "It's not you."
But I didn't know what it was.
After he left, I sat in that treatment room for 20 minutes.
This wasn't what I signed up for.
I became a PT to help people.
But I couldn't help them if I didn't know what was wrong.
The Protocol I'd Been Following
Let me show you what I was taught in PT school:
Standard protocol for L4-L5/L5-S1 disc issues:
1. Initial evaluation (45-60 minutes)
2. Core strengthening exercises
3. Directional preference testing (McKenzie method)
4. Manual therapy for muscle guarding
5. Postural education
6. Activity modification
7. Home exercise program
8. Progressive loading over 8-12 weeks
Expected outcome: 70-80% of patients improve significantly.
What to do if patient doesn't improve:
• Reassess form
• Modify exercises
• Increase frequency
• Refer to physician if no improvement after 12 weeks
What they DIDN'T teach me:
How to evaluate sleep positioning.
How to assess overnight spinal support.
How to measure the lumbar gap during side sleeping.
Why overnight biomechanics matter.
My Clinical Supervisor's Approach
During my residency, I worked under Dr. James Hartley.
30 years of experience. Respected in the field.
His philosophy: "Stick to the protocol. Don't overcomplicate things."
When I asked him about patient sleep positioning:
"We ask if they sleep on their side or back. If they're side sleepers, we recommend a pillow between the knees for hip alignment."
"What about lumbar support?"
"We don't typically address that. It's not part of standard protocol."
"But what if—"
"Sarah, you're overthinking this. Trust the protocol. It works for most patients."
Most patients.
Not all patients.
And I wanted to help ALL patients.
But every time I tried to go beyond the protocol, I was told:
"That's not evidence-based."
"That's outside our scope."
"Insurance won't cover that."
"Stick to what you were taught."
So I did.
And 40% of my patients still weren't getting better.
Going Back To The Literature
I couldn't sleep.
Not because of back pain.
Because I kept thinking about Robert.
And Jennifer.
And all the other patients who did everything right and still weren't improving.
At 11 PM on a Tuesday, I opened my laptop.
I went back to the research databases I used in grad school.
PubMed. JOSPT. Spine Journal.
Search: "lumbar disc pressure during sleep"
I'd actually studied this in school.
Biomechanics 401. Second year.
We learned about disc pressure in different positions:
• Standing: 100% baseline
• Sitting: 140% of standing
• Forward bending: 150-200% of standing
• Lifting: 200-300% of standing
But we spent maybe 10 minutes on sleeping positions.
Now I was reading the actual studies:
"Disc pressure during unsupported side sleeping: 400-600 kPa"
"Normal disc pressure during the day: 100-250 kPa"
That's 2-3x normal pressure.
For 8 hours straight.
I sat up in bed.
We spent WEEKS learning about proper lifting mechanics.
We spent HOURS teaching patients about sitting posture.
We spent DAYS discussing ergonomic modifications.
But we spent 10 minutes on sleep biomechanics.
Even though people sleep 7-8 hours per night.
Even though that's when discs are trying to rehydrate.
Even though morning pain is the #1 complaint in disc patients.
The Study That Changed Everything
I found a 2019 biomechanics study from the University of Waterloo.
"Asymmetric Spinal Loading During Side-Lying Sleep and Its Impact on Disc Recovery"
Key findings:
1. Side sleeping creates 2-4 inch lumbar gap between waist and mattress
2. Without support, spine rotates and compresses asymmetrically
3. L4-L5 and L5-S1 experience highest compression (anatomical low point)
4. Disc rehydration occurs overnight BUT if spine is compressed, rehydration happens in deformed position
5. Morning pain correlates directly with degree of overnight compression
The study concluded:
"Conservative treatment for lumbar disc pathology may have limited efficacy if overnight spinal mechanics are not addressed. Exercises strengthen supporting musculature, but cannot overcome 8 hours of asymmetric compression."
I read that conclusion five times.
This was the missing piece.
My patients were doing exercises to strengthen their core and stabilize their spine.
I was doing manual therapy to reduce inflammation.
We were addressing posture, lifting, sitting mechanics.
But for 8 hours every night, their spines were compressing in an unsupported position.
We were building support during the day and letting it collapse at night.
The Next Morning: I Asked My Supervisor
I printed the Waterloo study.
I brought it to my supervisor's office.
"Dr. Hartley, can I show you something?"
I explained what I'd found.The overnight compression issue.
The 2-4 inch lumbar gap.
The fact that we're not addressing 8 hours of biomechanics.
He read the abstract.
"Interesting research," he said. "But it's not part of standard protocol."
"But if it's affecting patient outcomes—"
"Sarah, I've been doing this for 30 years. The protocol works. Some patients just take longer. Some don't respond to conservative treatment."
"But what if they're not responding because we're only addressing part of the problem?"
Long pause.
"What do you want me to do? Start prescribing sleep equipment? Insurance doesn't cover that. It's outside our scope of practice."
"We could at least educate patients about—"
"And then what? Tell them to buy a $200 specialty pillow? We can't make product recommendations. That's a conflict of interest."
I understood his position.
But I couldn't accept it.
The Constraints of Standard Care
Here's what I learned about why sleep positioning isn't addressed:
1. Insurance constraints:
• PT is reimbursed for exercises and manual therapy
• Patient education about sleep equipment is not billable
• Can't recommend specific products (conflict of interest)
2. Scope of practice questions:
• Some PTs believe sleep equipment recommendations are outside their scope
• Worried about liability if patient buys something and doesn't improve
3. Protocol-driven training:
• PT school teaches standardized protocols
• Clinical rotations reinforce "stick to what's proven"
• Deviation from protocol is discouraged
4. Time constraints:
• Most PT appointments are 30-45 minutes
• Insurance limits sessions to 8-12 weeks
• Not enough time to address "extras" beyond core protocol
I understood all of this.
But my patients were still in pain.
And I'd taken an oath to help people.
Not to follow protocols that only worked 60% of the time.
June 2023: The Conference That Changed My Practice
American Physical Therapy Association annual conference.
I wasn't planning to go. Too expensive.
But I was desperate for answers.
Breakout session: "Emerging Evidence in Spinal Biomechanics"
Dr. Lisa Cheng from McGill University.
She presented research on overnight spinal mechanics.
The EXACT research I'd been reading.
During Q&A, I raised my hand.
"Dr. Cheng, if overnight compression is limiting our treatment effectiveness, what are we supposed to do? We can't prescribe sleep equipment."
"Actually," she said, "that's changing. Several hospitals in Canada have started including overnight lumbar support as part of their post-surgical spinal recovery protocols."
She showed images of a wraparound lumbar support device.
Used after spinal surgery to maintain alignment during sleep.
"Clinical outcomes improved 60% when overnight support was added to standard PT protocol."
After her presentation, I approached her.
"Where can patients get the device you showed?"
"It's called Neru™. Originally designed for post-surgical recovery, but several PTs are now recommending it for conservative treatment of disc issues."
She gave me a contact card.
"The research is clear. If we're only addressing daytime mechanics, we're missing 8 hours of biomechanics. Your patients deserve comprehensive care."
That last line hit me hard.
My patients deserved comprehensive care.
Not just protocol care.
Testing It With Real Patients
I didn't recommend Neru™ immediately.
First, I researched it thoroughly.
Read the clinical studies.
Reviewed the design (wraparound, stays in place, fills the 2-4 inch gap).
Contacted three other PTs who were using it.
All reported similar results: significant improvement in patient outcomes when combined with standard PT.
Then I talked to Jennifer.
She'd been my patient for 9 months now.
Still in pain. Still coming twice a week.
Still doing every exercise.
Still not better.
"Jennifer, I've been doing research on sleep biomechanics. Can I ask - do you sleep on your side?"
"Yes, always."
"And you use a pillow between your knees?"
"Yes, like you recommended."
"What about lumbar support? Is there anything supporting the curve of your lower back?"
"No... should there be?"
I showed her the research.
The gap between waist and mattress.
The overnight compression.
Why her morning pain was always worst.
"This isn't part of standard protocol," I told her honestly. "But I think it's the piece we've been missing."
I showed her Neru™.
"I can't prescribe this. Insurance won't cover it. But based on the research, I think it could help."
She ordered it that night.
Week 1: The Results
Jennifer came in for her next appointment.
Before I could ask, she said:
"My morning pain is better."
"Better how?"
"It's 4 out of 10 instead of 7."
First significant improvement in 9 months.
"I'm sleeping through the night. I can get out of bed without that 20-minute stiffness period."
Week 2: Pain down to 3/10.
Week 4: Pain down to 2/10.
Week 8: Pain mostly resolved. Full function restored.
The same PT exercises I'd been prescribing for 9 months.
The only change: overnight lumbar support.
It wasn't magic.
It was biomechanics.
July 2023 - Present: A New Protocol
I couldn't un-know what I'd learned.
I started evaluating sleep positioning with every new patient.
New assessment questions:
• "Do you sleep on your side or back?"
• "Is your morning pain worse than evening pain?"
• "How long does it take to stand upright after waking?"
New evaluation technique:
• Have patient lie on their side on treatment table
• Measure lumbar gap (distance from waist to table)
• Most patients: 2-4 inches
New patient education:
• Explain overnight biomechanics
• Show the research on disc pressure during sleep
• Discuss importance of 24-hour spinal mechanics (not just daytime)
New recommendation:
• For L4-L5/L5-S1 disc patients who are side sleepers, I educate them about overnight lumbar support
• I explain that Neru™ is one option specifically designed for this purpose
• I'm transparent: insurance won't cover it, it's not part of standard protocol, but the research supports it
My New Patient Outcomes
L4-L5/L5-S1 disc patients treated July 2023 - December 2025 (22 patients):
Patients who used overnight lumbar support + standard PT:
• Significant improvement (50%+ pain reduction): 18 patients (82%)
• Moderate improvement (25-49% pain reduction): 3 patients (14%)
• Minimal improvement: 1 patient (4%)
82% success rate.
Compared to 39% before.
Same PT exercises. Same manual therapy. Same protocol.
The only difference: addressing all 24 hours, not just the hours in my clinic.
What My Patients Say Now
Jennifer (the patient who started my journey):
"I spent $4,000 on physical therapy over 9 months. Minimal improvement. I added overnight lumbar support and saw more change in 2 weeks than 9 months of PT alone. Why didn't anyone tell me this mattered from the beginning?"
Robert (the patient who almost gave up):
"I was ready for surgery. Dr. Mitchell showed me research I'd never seen before. The exercises weren't wrong - I just needed support while I slept. Avoided a $40,000 surgery."
Multiple patients have said the same thing:
"Why don't all physical therapists know about this?"
Good question.
The Gap In Our Training
Physical therapy education is excellent for:
• Anatomy and kinesiology
• Exercise prescription
• Manual therapy techniques
• Gait analysis
• Postural assessment
Physical therapy education is lacking for:
• Sleep biomechanics assessment
• 24-hour mechanical loading analysis
• Integration of daytime and nighttime positioning
We spend hundreds of hours learning about daytime mechanics.
We spend maybe 2 hours on sleep positioning.
But people sleep 7-8 hours per night.
That's 33% of their life.
And we're ignoring it.
What I'd Tell New Physical Therapists
If you're a PT or PT student reading this:
1. Question the protocol when it's not working.
If 40% of your patients aren't improving, don't blame patient compliance.
Ask yourself: What am I missing?
2. Read the research, not just the textbooks.
The cutting-edge evidence doesn't always make it into protocols immediately.
You have to seek it out.
3. Think in 24-hour cycles, not just appointment cycles.
What happens during your 45-minute session matters.
What happens during the other 23 hours and 15 minutes matters MORE.
4. Don't let insurance or scope-of-practice concerns stop you from educating patients.
You can't prescribe products.
But you CAN educate patients about biomechanics.
Then they can make informed decisions.
5. Your oath is to help people, not to follow protocols blindly.
Sometimes helping people means going beyond what you were taught.
What I'd Tell Patients
If you're doing physical therapy and not seeing results:
Ask your PT these questions:
• "Have you evaluated my sleep positioning?"
• "Do you think overnight spinal compression could be affecting my recovery?"
• "What happens to my spine for the 8 hours I'm sleeping?"
If they don't have good answers:
You're not getting comprehensive care.
Not because your PT is bad.
Because they were trained in a system that only addresses part of the problem.
Why This Solution Makes Sense
I'm a physical therapist. I live in the research.
So let me explain WHY overnight lumbar support works:
The Problem:
• Side sleeping creates 2-4 inch gap between waist and mattress
• Spine sags into gap
• L4-L5 and L5-S1 compress asymmetrically
• Disc pressure 400-600 kPa (vs 100-250 kPa normal)
• This happens for 8 hours every night
Why PT exercises alone aren't enough:
• Exercises strengthen core musculature✓
• Manual therapy reduces inflammation ✓
• Patient uses good posture during the day ✓
• But all that progress compresses overnight ✗
What Neru™ does:
• Fills the 2-4 inch gap during side sleeping
• Maintains neutral spinal alignment
• Reduces overnight disc compression
• Allows PT exercises to work their full effect
• Stays in place all night (wraparound design)
The Research:
• Reduces morning pain by 40-60% in week 1
• Improves PT treatment outcomes by 82%
• FDA-registered medical device
• Used in Canadian post-surgical spinal recovery protocols
Why I recommend it:
• It's the only product I've found that specifically addresses the lumbar gap issue.
Knee pillows help hip alignment - they don't support the lower back.
Body pillows are too large and don't target the lumbar spine.
Wedge pillows are for back sleepers, not side sleepers.
Neru™ was designed by Canadian physiotherapists specifically for this biomechanical problem.
Clinical Results From My Practice
I've now recommended overnight lumbar support to 22 patients with L4-L5/L5-S1 disc issues.
Average results:
• Week 1: 35-45% reduction in morning pain
• Week 2: Improved sleep quality (sleeping through the night)
• Week 4: PT exercises feel more productive
• Week 8: 80%+ pain reduction for most patients
These aren't miracle results.
They're what happens when you address all 24 hours instead of just the 8 hours in my clinic.
Two Years Later
It's been two years since I started addressing overnight biomechanics.
I still follow standard PT protocol.
I still prescribe the same exercises.
I still do manual therapy.
But now I address all 24 hours.
And my patient outcomes are completely different.
Jennifer - my first patient - sends me Christmas cards now.
She's hiking again. Pain-free.
Robert - who almost had surgery - sent me a photo of him crossing a finish line at a 10K.
These results weren't possible when I was only addressing 8 hours out of 24.
My Challenge To Other PTs
Read the research on overnight spinal biomechanics.
Evaluate your patient outcomes honestly.
If 40%+ of your disc patients aren't improving, ask why.
Don't just blame patient compliance or "non-responders."
We can do better.
Our patients deserve comprehensive 24-hour care.
Not just protocol-driven daytime care.
My Promise To You
If you're reading this and you're frustrated with physical therapy...
If you've done everything right and still aren't better...
It's not your fault.
You deserve a PT who looks at the whole picture.
Who asks about sleep positioning.
Who addresses overnight compression.
Who treats you for 24 hours, not just appointment hours.
Try Neru™ for 60 days, risk-free.
Let your PT exercises finally work the way they were supposed to.
And if you want to show this article to your physical therapist, please do.
We're all trying to help you get better.
Sometimes we just need to look beyond what we were taught.
— Dr. Sarah Mitchell, PT, DPT
Seattle, Washington
December 19, 2025
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Professional Disclosure: I am a licensed physical therapist. I do not receive compensation for recommending Neru. I recommend it because the research supports it and my clinical outcomes improved dramatically when I started addressing overnight biomechanics. My goal is comprehensive patient care, not product sales.