Physical therapy for back pain
Physical therapy fails most often when nobody established what it was supposed to be treating.
Physical therapy for back pain is the most evidence-supported treatment in this field. It works best when the program is matched to the mechanism driving the pain, not to a diagnosis code. When it fails, it was almost always aimed at a back rather than at a mechanism.
Does physical therapy really work for back pain?
Some backs are driven by facet loading in extension (bending backward). Others are driven by a disc under flexion (bending forward). They need opposite programs. Give both the same generic core plan and one improves, one worsens. The average across a clinic then looks like modest benefit.
That averaging is a large part of why the research on physical therapy for back pain looks lukewarm. Programs matched to a mechanism do considerably better than programs matched to a diagnosis code.
Which exercises are right for my kind of back pain?
EXTENSION-INTOLERANT (FACET, STENOSIS)
Worse standing and walking, better sitting. Flexion-biased work (exercises that favor bending forward). Hip extensor and deep abdominal strengthening. Graded walking with seated breaks before symptoms build. Avoid end-range extension (bending fully backward) early. Stenosis · Facet syndrome.
FLEXION-INTOLERANT (DISCOGENIC)
Worse sitting and bending, better standing. Extension-biased loading (exercises that favor bending backward). Hip hinge retraining, so the lumbar spine stops absorbing the movement. Breaking up long stretches of sitting. When sitting is the problem.
INSTABILITY OR SACROILIAC PATTERN
Force-closure work across the pelvis (training the muscles that press the joint together) — deep abdominal wall, gluteals, pelvic floor. Use it instead of general stretching, which often makes a hypermobile (too loose) pelvis worse. The SI joint.
What does good physical therapy for back pain look like?
- An assessment that finds a directional preference (the direction of movement that eases your pain), not just a list of exercises.
- Progressive loading in steps you can measure. Tissue adapts to demand. Exercises that never change stop producing change.
- Homework that is short enough to actually happen most days, rather than a forty-minute program done twice.
- Re-assessment at three to four weeks, with the program changed if function has not moved.
- An endpoint. Therapy should hand you a maintenance program, not continue indefinitely.
Can injections and physical therapy work together?
These are not competing options. Treating them as such is the usual mistake. Sometimes pain is so severe that a person cannot do the loading that would help. Then the therapy fails for mechanical reasons, not clinical ones. That is exactly where a confirmed, targeted procedure earns its place. It quiets the signal enough for the work to become possible.
The injection is not the treatment. It is what makes the treatment possible, and the treatment is largely this page.
Frequently asked questions
How long before physical therapy works?
Expect some directional signal within three to four weeks. No change by then means the program should be rethought, not continued.
Is it normal for it to hurt?
Mild soreness that settles within a day is expected. Pain that increases session over session, or that starts traveling down the leg, means the direction is wrong.
Can I just do exercises from the internet?
You can, and it works for the people whose pattern happens to match the video. The value of an assessment is knowing which of the two opposite programs is yours. The type of exercise matters far less than that it happens.
Why did physical therapy not help my back pain?
Usually because the program was aimed at a back instead of a mechanism. A facet or stenosis back and a disc back need opposite programs. So a generic core routine helps one and worsens the other. The other common reason is pain too severe to do the loading that would help. That is a mechanical failure. It is not proof that therapy cannot work for you.
How long should physical therapy for back pain last?
Long enough to change function, and no longer. Expect a directional signal within three to four weeks. Re-assess at that point, and get a new program if nothing has moved. Good therapy has an endpoint. It hands you a maintenance program you can run on your own rather than going on forever.
How often should I do my back exercises at home?
Most days, in a program short enough that it actually happens. A brief routine done regularly beats a forty-minute program done twice. The load should also climb in steps you can measure. That is because tissue adapts to demand, and exercises that never change stop producing change. If the pain grows session over session or travels down the leg, the direction is wrong.
To see how this works in our own clinic, our physician-directed physiotherapy program for back pain lists every treatment, test and home exercise a physician may order.
Related reading
Rest, opioids, an early scan and a belt are the four that slow this down.
Where an injection opens a window for rehabilitation rather than replacing it.
Ask what direction your back prefers before you start
If nobody has established that, the program is a coin toss and you have a fifty percent chance of doing the wrong one diligently.
12174 Natural Bridge Rd, Suite 301
St. Louis, MO 63044
At DePaul Hospital on Natural Bridge Road, inside the I-270 and I-70 interchange, on the west side of the airport.
Sources
- Hayden JA et al. Exercise therapy for chronic low back pain. The Cochrane database of systematic reviews, 2021. PubMed 34580864
- Bastos RM et al. Treatment-based classification for low back pain: systematic review with meta-analysis. The Journal of manual & manipulative therapy, 2022. PubMed 35067217
- Alrwaily M et al. Treatment-Based Classification System for Low Back Pain: Revision and Update. Physical therapy, 2016. PubMed 26637653
- IJzelenberg W et al. Exercise therapy for treatment of acute non-specific low back pain. The Cochrane database of systematic reviews, 2023. PubMed 37646368